/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:34:11,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:34:11,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:34:11,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:34:11,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:34:11,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:34:11,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:34:11,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:34:11,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:34:11,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:34:11,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:34:11,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-03-11 14:34:11,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:34:11,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:34:11,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:34:11,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 14:34:11,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:34:11,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:34:11,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:34:11,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:34:11,972 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:34:11,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:34:11,973 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:34:11,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:34:11,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:34:11,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:34:11,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:34:11,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:34:11,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:34:11,974 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:34:11,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:34:11,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:34:11,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:34:11,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:34:11,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:34:11,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:34:11,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:34:11,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:34:11,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:34:11,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:34:11,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:34:11,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:34:11,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:34:11,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:34:11,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:34:12,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:34:12,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:34:12,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:34:12,269 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 14:34:12,270 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 14:34:12,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-03-11 14:34:12,271 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-03-11 14:34:12,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:34:12,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 14:34:12,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:34:12,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:34:12,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:34:12,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... [2021-03-11 14:34:12,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... [2021-03-11 14:34:12,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:34:12,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:34:12,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:34:12,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:34:12,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... [2021-03-11 14:34:12,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... [2021-03-11 14:34:12,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... [2021-03-11 14:34:12,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... [2021-03-11 14:34:12,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... [2021-03-11 14:34:12,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... [2021-03-11 14:34:12,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... [2021-03-11 14:34:12,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:34:12,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:34:12,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:34:12,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:34:12,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:34:12,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 14:34:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 14:34:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 14:34:12,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 14:34:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 14:34:12,399 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 14:34:12,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 14:34:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 14:34:12,399 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 14:34:12,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 14:34:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 14:34:12,400 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 14:34:12,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 14:34:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 14:34:12,400 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 14:34:12,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 14:34:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:34:12,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:34:12,401 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-11 14:34:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-11 14:34:12,401 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-11 14:34:12,402 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:34:12,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:34:12,537 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 14:34:12,539 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:34:12 BoogieIcfgContainer [2021-03-11 14:34:12,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:34:12,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:34:12,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:34:12,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:34:12,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:34:12" (1/2) ... [2021-03-11 14:34:12,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba56cec and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:34:12, skipping insertion in model container [2021-03-11 14:34:12,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:34:12" (2/2) ... [2021-03-11 14:34:12,545 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-03-11 14:34:12,561 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:34:12,561 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:34:12,564 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:34:12,565 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:34:12,692 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-03-11 14:34:12,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-11 14:34:12,721 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:34:12,722 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:34:12,722 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:34:12,722 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:34:12,722 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:34:12,722 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:34:12,722 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:34:12,722 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:34:12,733 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:34:12,742 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 63 transitions, 264 flow [2021-03-11 14:34:12,744 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 63 transitions, 264 flow [2021-03-11 14:34:12,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions, 264 flow [2021-03-11 14:34:12,803 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2021-03-11 14:34:12,803 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-03-11 14:34:12,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 763 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2021-03-11 14:34:12,811 INFO L116 LiptonReduction]: Number of co-enabled transitions 780 [2021-03-11 14:34:12,957 INFO L131 LiptonReduction]: Checked pairs total: 2295 [2021-03-11 14:34:12,957 INFO L133 LiptonReduction]: Total number of compositions: 7 [2021-03-11 14:34:12,966 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 56 transitions, 250 flow [2021-03-11 14:34:13,042 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 794 states, 792 states have (on average 3.926767676767677) internal successors, (3110), 793 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 794 states, 792 states have (on average 3.926767676767677) internal successors, (3110), 793 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:13,075 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:13,076 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:13,076 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:13,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:13,080 INFO L82 PathProgramCache]: Analyzing trace with hash -773222054, now seen corresponding path program 1 times [2021-03-11 14:34:13,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:13,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203043795] [2021-03-11 14:34:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:13,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:13,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:34:13,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:13,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203043795] [2021-03-11 14:34:13,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:13,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:34:13,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070902528] [2021-03-11 14:34:13,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:34:13,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:13,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:34:13,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:13,246 INFO L87 Difference]: Start difference. First operand has 794 states, 792 states have (on average 3.926767676767677) internal successors, (3110), 793 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:13,279 INFO L93 Difference]: Finished difference Result 602 states and 2198 transitions. [2021-03-11 14:34:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:34:13,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:13,295 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:34:13,295 INFO L226 Difference]: Without dead ends: 601 [2021-03-11 14:34:13,296 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-03-11 14:34:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2021-03-11 14:34:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 3.6616666666666666) internal successors, (2197), 600 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 2197 transitions. [2021-03-11 14:34:13,359 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 2197 transitions. Word has length 19 [2021-03-11 14:34:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:13,359 INFO L480 AbstractCegarLoop]: Abstraction has 601 states and 2197 transitions. [2021-03-11 14:34:13,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,360 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 2197 transitions. [2021-03-11 14:34:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:13,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:13,362 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:13,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:34:13,362 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:13,363 INFO L82 PathProgramCache]: Analyzing trace with hash 969558490, now seen corresponding path program 1 times [2021-03-11 14:34:13,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:13,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242657854] [2021-03-11 14:34:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:13,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:13,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:34:13,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:13,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242657854] [2021-03-11 14:34:13,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:13,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:34:13,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763314142] [2021-03-11 14:34:13,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:34:13,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:13,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:34:13,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:13,385 INFO L87 Difference]: Start difference. First operand 601 states and 2197 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:13,396 INFO L93 Difference]: Finished difference Result 417 states and 1445 transitions. [2021-03-11 14:34:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:34:13,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:13,399 INFO L225 Difference]: With dead ends: 417 [2021-03-11 14:34:13,399 INFO L226 Difference]: Without dead ends: 417 [2021-03-11 14:34:13,400 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:13,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-03-11 14:34:13,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-03-11 14:34:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 3.4735576923076925) internal successors, (1445), 416 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1445 transitions. [2021-03-11 14:34:13,418 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1445 transitions. Word has length 19 [2021-03-11 14:34:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:13,418 INFO L480 AbstractCegarLoop]: Abstraction has 417 states and 1445 transitions. [2021-03-11 14:34:13,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1445 transitions. [2021-03-11 14:34:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:13,420 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:13,420 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:13,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:34:13,420 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:13,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:13,421 INFO L82 PathProgramCache]: Analyzing trace with hash 160210872, now seen corresponding path program 1 times [2021-03-11 14:34:13,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:13,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910947242] [2021-03-11 14:34:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:13,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:13,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:13,548 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:13,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:13,567 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:13,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:13,596 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:13,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:13,640 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:13,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:13,687 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:13,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:13,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910947242] [2021-03-11 14:34:13,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:13,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:13,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825271827] [2021-03-11 14:34:13,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:13,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:13,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:13,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:13,732 INFO L87 Difference]: Start difference. First operand 417 states and 1445 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:13,816 INFO L93 Difference]: Finished difference Result 861 states and 2672 transitions. [2021-03-11 14:34:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:13,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:13,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:13,821 INFO L225 Difference]: With dead ends: 861 [2021-03-11 14:34:13,822 INFO L226 Difference]: Without dead ends: 823 [2021-03-11 14:34:13,822 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 146.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-03-11 14:34:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 447. [2021-03-11 14:34:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.4551569506726456) internal successors, (1541), 446 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1541 transitions. [2021-03-11 14:34:13,839 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1541 transitions. Word has length 19 [2021-03-11 14:34:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:13,839 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1541 transitions. [2021-03-11 14:34:13,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1541 transitions. [2021-03-11 14:34:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:13,841 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:13,841 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:13,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 14:34:13,842 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:13,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:13,842 INFO L82 PathProgramCache]: Analyzing trace with hash 534862058, now seen corresponding path program 2 times [2021-03-11 14:34:13,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:13,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271086281] [2021-03-11 14:34:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:13,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:13,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:13,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:13,935 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:13,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:13,948 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:13,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:13,964 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:13,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:13,983 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:13,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:14,018 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:14,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:14,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271086281] [2021-03-11 14:34:14,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:14,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:14,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401877104] [2021-03-11 14:34:14,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:14,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:14,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:14,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:14,055 INFO L87 Difference]: Start difference. First operand 447 states and 1541 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:14,139 INFO L93 Difference]: Finished difference Result 871 states and 2699 transitions. [2021-03-11 14:34:14,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:14,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:14,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:14,144 INFO L225 Difference]: With dead ends: 871 [2021-03-11 14:34:14,144 INFO L226 Difference]: Without dead ends: 812 [2021-03-11 14:34:14,145 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-03-11 14:34:14,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 436. [2021-03-11 14:34:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.464367816091954) internal successors, (1507), 435 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1507 transitions. [2021-03-11 14:34:14,163 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1507 transitions. Word has length 19 [2021-03-11 14:34:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:14,163 INFO L480 AbstractCegarLoop]: Abstraction has 436 states and 1507 transitions. [2021-03-11 14:34:14,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1507 transitions. [2021-03-11 14:34:14,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:14,165 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:14,165 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:14,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 14:34:14,166 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:14,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:14,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1341600626, now seen corresponding path program 3 times [2021-03-11 14:34:14,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:14,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479258405] [2021-03-11 14:34:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:14,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:14,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:14,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:14,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:14,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:14,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:14,236 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:14,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:14,252 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:14,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:14,272 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:14,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:14,351 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:14,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:14,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479258405] [2021-03-11 14:34:14,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:14,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:14,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167060919] [2021-03-11 14:34:14,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:14,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:14,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:14,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:14,388 INFO L87 Difference]: Start difference. First operand 436 states and 1507 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:14,452 INFO L93 Difference]: Finished difference Result 855 states and 2646 transitions. [2021-03-11 14:34:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:14,458 INFO L225 Difference]: With dead ends: 855 [2021-03-11 14:34:14,458 INFO L226 Difference]: Without dead ends: 817 [2021-03-11 14:34:14,459 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-03-11 14:34:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 445. [2021-03-11 14:34:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 3.4414414414414414) internal successors, (1528), 444 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1528 transitions. [2021-03-11 14:34:14,476 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1528 transitions. Word has length 19 [2021-03-11 14:34:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:14,476 INFO L480 AbstractCegarLoop]: Abstraction has 445 states and 1528 transitions. [2021-03-11 14:34:14,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1528 transitions. [2021-03-11 14:34:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:14,478 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:14,478 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:14,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 14:34:14,478 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:14,478 INFO L82 PathProgramCache]: Analyzing trace with hash 365395876, now seen corresponding path program 4 times [2021-03-11 14:34:14,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:14,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042232417] [2021-03-11 14:34:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:14,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:14,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:14,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:14,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:14,538 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:14,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:14,550 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:14,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:14,565 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:14,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:14,587 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:14,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:14,614 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:14,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:14,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042232417] [2021-03-11 14:34:14,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:14,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:14,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756787747] [2021-03-11 14:34:14,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:14,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:14,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:14,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:14,644 INFO L87 Difference]: Start difference. First operand 445 states and 1528 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:14,735 INFO L93 Difference]: Finished difference Result 861 states and 2662 transitions. [2021-03-11 14:34:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:14,740 INFO L225 Difference]: With dead ends: 861 [2021-03-11 14:34:14,740 INFO L226 Difference]: Without dead ends: 808 [2021-03-11 14:34:14,740 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-03-11 14:34:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 436. [2021-03-11 14:34:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.44367816091954) internal successors, (1498), 435 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1498 transitions. [2021-03-11 14:34:14,755 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1498 transitions. Word has length 19 [2021-03-11 14:34:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:14,755 INFO L480 AbstractCegarLoop]: Abstraction has 436 states and 1498 transitions. [2021-03-11 14:34:14,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1498 transitions. [2021-03-11 14:34:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:14,757 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:14,757 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:14,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 14:34:14,757 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:14,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:14,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1763599130, now seen corresponding path program 5 times [2021-03-11 14:34:14,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:14,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452076801] [2021-03-11 14:34:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:14,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:14,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:14,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:14,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:14,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:14,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:14,818 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:14,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:14,831 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:14,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:14,856 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:14,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:14,887 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:14,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:14,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452076801] [2021-03-11 14:34:14,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:14,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:14,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60347748] [2021-03-11 14:34:14,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:14,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:14,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:14,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:14,919 INFO L87 Difference]: Start difference. First operand 436 states and 1498 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:15,016 INFO L93 Difference]: Finished difference Result 882 states and 2745 transitions. [2021-03-11 14:34:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:15,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:15,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:15,025 INFO L225 Difference]: With dead ends: 882 [2021-03-11 14:34:15,025 INFO L226 Difference]: Without dead ends: 834 [2021-03-11 14:34:15,026 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 139.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:15,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-03-11 14:34:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 452. [2021-03-11 14:34:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 3.4279379157427936) internal successors, (1546), 451 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1546 transitions. [2021-03-11 14:34:15,044 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1546 transitions. Word has length 19 [2021-03-11 14:34:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:15,044 INFO L480 AbstractCegarLoop]: Abstraction has 452 states and 1546 transitions. [2021-03-11 14:34:15,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1546 transitions. [2021-03-11 14:34:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:15,046 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:15,046 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:15,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 14:34:15,046 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:15,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:15,047 INFO L82 PathProgramCache]: Analyzing trace with hash -905319246, now seen corresponding path program 6 times [2021-03-11 14:34:15,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:15,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748046759] [2021-03-11 14:34:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:15,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:15,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:15,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:15,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:15,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:15,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:15,083 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:15,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:15,097 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:15,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:15,122 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:15,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:15,147 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:15,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:15,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748046759] [2021-03-11 14:34:15,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:15,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:15,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566619882] [2021-03-11 14:34:15,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:15,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:15,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:15,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:15,172 INFO L87 Difference]: Start difference. First operand 452 states and 1546 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:15,264 INFO L93 Difference]: Finished difference Result 878 states and 2717 transitions. [2021-03-11 14:34:15,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:15,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:15,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:15,270 INFO L225 Difference]: With dead ends: 878 [2021-03-11 14:34:15,270 INFO L226 Difference]: Without dead ends: 807 [2021-03-11 14:34:15,271 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:15,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2021-03-11 14:34:15,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 425. [2021-03-11 14:34:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 3.4622641509433962) internal successors, (1468), 424 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1468 transitions. [2021-03-11 14:34:15,289 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1468 transitions. Word has length 19 [2021-03-11 14:34:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:15,289 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 1468 transitions. [2021-03-11 14:34:15,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1468 transitions. [2021-03-11 14:34:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:15,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:15,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:15,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 14:34:15,291 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:15,291 INFO L82 PathProgramCache]: Analyzing trace with hash 903297962, now seen corresponding path program 7 times [2021-03-11 14:34:15,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:15,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230120774] [2021-03-11 14:34:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:15,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:15,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:15,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:15,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:15,319 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:15,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:15,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:15,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:15,343 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:15,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:15,362 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:15,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:15,399 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:15,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:15,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230120774] [2021-03-11 14:34:15,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:15,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:15,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718992793] [2021-03-11 14:34:15,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:15,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:15,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:15,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:15,450 INFO L87 Difference]: Start difference. First operand 425 states and 1468 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:15,524 INFO L93 Difference]: Finished difference Result 838 states and 2569 transitions. [2021-03-11 14:34:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:15,529 INFO L225 Difference]: With dead ends: 838 [2021-03-11 14:34:15,529 INFO L226 Difference]: Without dead ends: 800 [2021-03-11 14:34:15,529 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-03-11 14:34:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 442. [2021-03-11 14:34:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.430839002267574) internal successors, (1513), 441 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1513 transitions. [2021-03-11 14:34:15,549 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1513 transitions. Word has length 19 [2021-03-11 14:34:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:15,549 INFO L480 AbstractCegarLoop]: Abstraction has 442 states and 1513 transitions. [2021-03-11 14:34:15,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1513 transitions. [2021-03-11 14:34:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:15,551 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:15,551 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:15,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 14:34:15,551 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:15,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1277949148, now seen corresponding path program 8 times [2021-03-11 14:34:15,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:15,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552789626] [2021-03-11 14:34:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:15,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:15,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:15,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:15,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:15,591 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:15,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:15,600 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:15,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:15,613 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:15,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:15,632 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:15,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:15,661 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:15,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:15,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552789626] [2021-03-11 14:34:15,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:15,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:15,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172665036] [2021-03-11 14:34:15,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:15,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:15,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:15,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:15,691 INFO L87 Difference]: Start difference. First operand 442 states and 1513 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:15,777 INFO L93 Difference]: Finished difference Result 848 states and 2596 transitions. [2021-03-11 14:34:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:15,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:15,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:15,781 INFO L225 Difference]: With dead ends: 848 [2021-03-11 14:34:15,781 INFO L226 Difference]: Without dead ends: 789 [2021-03-11 14:34:15,781 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-03-11 14:34:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 431. [2021-03-11 14:34:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 3.4488372093023254) internal successors, (1483), 430 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1483 transitions. [2021-03-11 14:34:15,797 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1483 transitions. Word has length 19 [2021-03-11 14:34:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:15,797 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 1483 transitions. [2021-03-11 14:34:15,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,797 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1483 transitions. [2021-03-11 14:34:15,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:15,799 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:15,799 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:15,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 14:34:15,799 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:15,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1759091492, now seen corresponding path program 9 times [2021-03-11 14:34:15,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:15,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821424017] [2021-03-11 14:34:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:15,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:15,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:15,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:15,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:15,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:15,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:15,830 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:15,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:15,843 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:15,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:15,876 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:15,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:15,902 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:15,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:15,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821424017] [2021-03-11 14:34:15,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:15,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:15,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89215857] [2021-03-11 14:34:15,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:15,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:15,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:15,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:15,925 INFO L87 Difference]: Start difference. First operand 431 states and 1483 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:15,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:15,985 INFO L93 Difference]: Finished difference Result 821 states and 2505 transitions. [2021-03-11 14:34:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:15,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:15,989 INFO L225 Difference]: With dead ends: 821 [2021-03-11 14:34:15,989 INFO L226 Difference]: Without dead ends: 783 [2021-03-11 14:34:15,990 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:15,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-03-11 14:34:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 436. [2021-03-11 14:34:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.4298850574712643) internal successors, (1492), 435 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1492 transitions. [2021-03-11 14:34:16,008 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1492 transitions. Word has length 19 [2021-03-11 14:34:16,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:16,008 INFO L480 AbstractCegarLoop]: Abstraction has 436 states and 1492 transitions. [2021-03-11 14:34:16,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1492 transitions. [2021-03-11 14:34:16,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:16,010 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:16,010 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:16,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 14:34:16,011 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:16,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:16,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1008029398, now seen corresponding path program 10 times [2021-03-11 14:34:16,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:16,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318993301] [2021-03-11 14:34:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:16,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:16,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:16,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:16,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:16,045 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:16,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:16,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:16,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:16,067 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:16,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:16,097 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:16,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:16,125 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:16,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:16,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318993301] [2021-03-11 14:34:16,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:16,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:16,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118148421] [2021-03-11 14:34:16,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:16,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:16,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:16,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:16,149 INFO L87 Difference]: Start difference. First operand 436 states and 1492 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:16,232 INFO L93 Difference]: Finished difference Result 820 states and 2499 transitions. [2021-03-11 14:34:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:16,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:16,237 INFO L225 Difference]: With dead ends: 820 [2021-03-11 14:34:16,237 INFO L226 Difference]: Without dead ends: 778 [2021-03-11 14:34:16,237 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-03-11 14:34:16,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 431. [2021-03-11 14:34:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 3.437209302325581) internal successors, (1478), 430 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1478 transitions. [2021-03-11 14:34:16,252 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1478 transitions. Word has length 19 [2021-03-11 14:34:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:16,252 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 1478 transitions. [2021-03-11 14:34:16,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1478 transitions. [2021-03-11 14:34:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:16,255 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:16,255 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:16,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 14:34:16,255 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash -262091078, now seen corresponding path program 11 times [2021-03-11 14:34:16,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:16,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127583529] [2021-03-11 14:34:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:16,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:16,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:16,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:16,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:16,291 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:16,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:16,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:16,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:16,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:16,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:16,335 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:16,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:16,361 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:16,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:16,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127583529] [2021-03-11 14:34:16,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:16,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:16,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830003067] [2021-03-11 14:34:16,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:16,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:16,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:16,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:16,386 INFO L87 Difference]: Start difference. First operand 431 states and 1478 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:16,469 INFO L93 Difference]: Finished difference Result 845 states and 2591 transitions. [2021-03-11 14:34:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:16,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:16,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:16,474 INFO L225 Difference]: With dead ends: 845 [2021-03-11 14:34:16,474 INFO L226 Difference]: Without dead ends: 797 [2021-03-11 14:34:16,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-03-11 14:34:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 440. [2021-03-11 14:34:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.416856492027335) internal successors, (1500), 439 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1500 transitions. [2021-03-11 14:34:16,491 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1500 transitions. Word has length 19 [2021-03-11 14:34:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:16,491 INFO L480 AbstractCegarLoop]: Abstraction has 440 states and 1500 transitions. [2021-03-11 14:34:16,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1500 transitions. [2021-03-11 14:34:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:16,493 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:16,493 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:16,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 14:34:16,493 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:16,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:16,494 INFO L82 PathProgramCache]: Analyzing trace with hash -262685724, now seen corresponding path program 12 times [2021-03-11 14:34:16,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:16,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16945491] [2021-03-11 14:34:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:16,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:16,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:16,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:16,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:16,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:16,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:16,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:16,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:16,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:16,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:16,582 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:16,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:16,608 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:16,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:16,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16945491] [2021-03-11 14:34:16,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:16,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:16,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980033304] [2021-03-11 14:34:16,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:16,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:16,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:16,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:16,630 INFO L87 Difference]: Start difference. First operand 440 states and 1500 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:16,717 INFO L93 Difference]: Finished difference Result 834 states and 2544 transitions. [2021-03-11 14:34:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:16,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:16,722 INFO L225 Difference]: With dead ends: 834 [2021-03-11 14:34:16,722 INFO L226 Difference]: Without dead ends: 782 [2021-03-11 14:34:16,723 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-03-11 14:34:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 425. [2021-03-11 14:34:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 3.44811320754717) internal successors, (1462), 424 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1462 transitions. [2021-03-11 14:34:16,741 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1462 transitions. Word has length 19 [2021-03-11 14:34:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:16,741 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 1462 transitions. [2021-03-11 14:34:16,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,741 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1462 transitions. [2021-03-11 14:34:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:16,742 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:16,743 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:16,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 14:34:16,743 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:16,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:16,743 INFO L82 PathProgramCache]: Analyzing trace with hash -272531798, now seen corresponding path program 13 times [2021-03-11 14:34:16,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:16,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013342663] [2021-03-11 14:34:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:16,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:16,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:16,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:16,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:16,782 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:16,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:16,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:16,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:16,806 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:16,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:16,846 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:16,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:16,874 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:16,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:16,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013342663] [2021-03-11 14:34:16,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:16,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:16,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302111025] [2021-03-11 14:34:16,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:16,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:16,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:16,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:16,897 INFO L87 Difference]: Start difference. First operand 425 states and 1462 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:16,960 INFO L93 Difference]: Finished difference Result 813 states and 2484 transitions. [2021-03-11 14:34:16,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:16,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:16,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:16,965 INFO L225 Difference]: With dead ends: 813 [2021-03-11 14:34:16,965 INFO L226 Difference]: Without dead ends: 775 [2021-03-11 14:34:16,965 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-03-11 14:34:16,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 435. [2021-03-11 14:34:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.4331797235023043) internal successors, (1490), 434 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1490 transitions. [2021-03-11 14:34:16,980 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1490 transitions. Word has length 19 [2021-03-11 14:34:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:16,980 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 1490 transitions. [2021-03-11 14:34:16,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1490 transitions. [2021-03-11 14:34:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:16,982 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:16,982 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:16,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 14:34:16,982 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:16,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:16,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1023593892, now seen corresponding path program 14 times [2021-03-11 14:34:16,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:16,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143996135] [2021-03-11 14:34:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:17,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:17,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:17,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:17,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:17,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:17,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:17,028 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:17,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:17,060 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:17,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:17,085 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:17,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:17,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143996135] [2021-03-11 14:34:17,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:17,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:17,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904175758] [2021-03-11 14:34:17,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:17,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:17,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:17,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:17,110 INFO L87 Difference]: Start difference. First operand 435 states and 1490 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:17,184 INFO L93 Difference]: Finished difference Result 812 states and 2478 transitions. [2021-03-11 14:34:17,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:17,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:17,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:17,189 INFO L225 Difference]: With dead ends: 812 [2021-03-11 14:34:17,189 INFO L226 Difference]: Without dead ends: 770 [2021-03-11 14:34:17,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-03-11 14:34:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 430. [2021-03-11 14:34:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.4405594405594404) internal successors, (1476), 429 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1476 transitions. [2021-03-11 14:34:17,203 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1476 transitions. Word has length 19 [2021-03-11 14:34:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:17,203 INFO L480 AbstractCegarLoop]: Abstraction has 430 states and 1476 transitions. [2021-03-11 14:34:17,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1476 transitions. [2021-03-11 14:34:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:17,204 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:17,205 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:17,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 14:34:17,205 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:17,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1872969652, now seen corresponding path program 15 times [2021-03-11 14:34:17,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:17,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63151261] [2021-03-11 14:34:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:17,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:17,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:17,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:17,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:17,233 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:17,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:17,245 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:17,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:17,262 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:17,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:17,286 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:17,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:17,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63151261] [2021-03-11 14:34:17,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:17,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:17,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896543512] [2021-03-11 14:34:17,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:17,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:17,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:17,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:17,309 INFO L87 Difference]: Start difference. First operand 430 states and 1476 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:17,371 INFO L93 Difference]: Finished difference Result 824 states and 2521 transitions. [2021-03-11 14:34:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:17,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:17,375 INFO L225 Difference]: With dead ends: 824 [2021-03-11 14:34:17,375 INFO L226 Difference]: Without dead ends: 786 [2021-03-11 14:34:17,375 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-03-11 14:34:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 439. [2021-03-11 14:34:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 3.4178082191780823) internal successors, (1497), 438 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1497 transitions. [2021-03-11 14:34:17,388 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1497 transitions. Word has length 19 [2021-03-11 14:34:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:17,389 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 1497 transitions. [2021-03-11 14:34:17,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1497 transitions. [2021-03-11 14:34:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:17,390 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:17,390 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:17,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 14:34:17,391 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:17,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:17,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1445792894, now seen corresponding path program 16 times [2021-03-11 14:34:17,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:17,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291678930] [2021-03-11 14:34:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:17,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:17,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:17,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:17,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:17,428 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:17,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:17,441 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:17,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:17,458 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:17,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:17,480 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:17,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:17,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291678930] [2021-03-11 14:34:17,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:17,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:17,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168400563] [2021-03-11 14:34:17,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:17,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:17,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:17,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:17,504 INFO L87 Difference]: Start difference. First operand 439 states and 1497 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:17,583 INFO L93 Difference]: Finished difference Result 830 states and 2537 transitions. [2021-03-11 14:34:17,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:17,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:17,587 INFO L225 Difference]: With dead ends: 830 [2021-03-11 14:34:17,587 INFO L226 Difference]: Without dead ends: 777 [2021-03-11 14:34:17,588 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:17,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-03-11 14:34:17,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 430. [2021-03-11 14:34:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.428904428904429) internal successors, (1471), 429 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1471 transitions. [2021-03-11 14:34:17,609 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1471 transitions. Word has length 19 [2021-03-11 14:34:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:17,609 INFO L480 AbstractCegarLoop]: Abstraction has 430 states and 1471 transitions. [2021-03-11 14:34:17,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1471 transitions. [2021-03-11 14:34:17,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:17,611 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:17,611 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:17,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 14:34:17,611 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:17,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:17,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1221170070, now seen corresponding path program 17 times [2021-03-11 14:34:17,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:17,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454033618] [2021-03-11 14:34:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:17,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:17,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:17,629 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:17,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:17,638 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:17,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:17,649 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:17,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:17,666 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:17,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:17,688 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:17,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:17,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454033618] [2021-03-11 14:34:17,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:17,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:17,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943421636] [2021-03-11 14:34:17,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:17,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:17,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:17,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:17,720 INFO L87 Difference]: Start difference. First operand 430 states and 1471 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:17,790 INFO L93 Difference]: Finished difference Result 821 states and 2512 transitions. [2021-03-11 14:34:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:17,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:17,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:17,803 INFO L225 Difference]: With dead ends: 821 [2021-03-11 14:34:17,803 INFO L226 Difference]: Without dead ends: 784 [2021-03-11 14:34:17,803 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-03-11 14:34:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 438. [2021-03-11 14:34:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 3.411899313501144) internal successors, (1491), 437 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1491 transitions. [2021-03-11 14:34:17,819 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1491 transitions. Word has length 19 [2021-03-11 14:34:17,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:17,819 INFO L480 AbstractCegarLoop]: Abstraction has 438 states and 1491 transitions. [2021-03-11 14:34:17,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:17,819 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1491 transitions. [2021-03-11 14:34:17,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:17,820 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:17,820 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:17,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 14:34:17,820 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:17,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:17,821 INFO L82 PathProgramCache]: Analyzing trace with hash -362295540, now seen corresponding path program 18 times [2021-03-11 14:34:17,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:17,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556622928] [2021-03-11 14:34:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:17,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:17,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:17,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:17,851 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:17,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:17,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:17,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:17,877 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:17,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:17,892 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:17,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:17,912 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:17,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:17,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556622928] [2021-03-11 14:34:17,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:17,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:17,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607034038] [2021-03-11 14:34:17,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:17,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:17,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:17,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:17,934 INFO L87 Difference]: Start difference. First operand 438 states and 1491 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:18,009 INFO L93 Difference]: Finished difference Result 828 states and 2530 transitions. [2021-03-11 14:34:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:18,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:18,012 INFO L225 Difference]: With dead ends: 828 [2021-03-11 14:34:18,012 INFO L226 Difference]: Without dead ends: 771 [2021-03-11 14:34:18,012 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-03-11 14:34:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 425. [2021-03-11 14:34:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 3.436320754716981) internal successors, (1457), 424 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1457 transitions. [2021-03-11 14:34:18,024 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1457 transitions. Word has length 19 [2021-03-11 14:34:18,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:18,024 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 1457 transitions. [2021-03-11 14:34:18,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1457 transitions. [2021-03-11 14:34:18,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:18,025 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:18,025 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:18,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 14:34:18,025 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:18,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:18,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1500056126, now seen corresponding path program 19 times [2021-03-11 14:34:18,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:18,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331376900] [2021-03-11 14:34:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:18,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:18,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:18,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:18,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:18,055 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:18,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:18,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:18,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:18,084 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:18,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:18,106 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:18,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:18,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331376900] [2021-03-11 14:34:18,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:18,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:18,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429355225] [2021-03-11 14:34:18,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:18,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:18,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:18,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:18,129 INFO L87 Difference]: Start difference. First operand 425 states and 1457 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:18,200 INFO L93 Difference]: Finished difference Result 861 states and 2675 transitions. [2021-03-11 14:34:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:18,206 INFO L225 Difference]: With dead ends: 861 [2021-03-11 14:34:18,206 INFO L226 Difference]: Without dead ends: 813 [2021-03-11 14:34:18,206 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-03-11 14:34:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 442. [2021-03-11 14:34:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.435374149659864) internal successors, (1515), 441 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1515 transitions. [2021-03-11 14:34:18,218 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1515 transitions. Word has length 19 [2021-03-11 14:34:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:18,219 INFO L480 AbstractCegarLoop]: Abstraction has 442 states and 1515 transitions. [2021-03-11 14:34:18,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1515 transitions. [2021-03-11 14:34:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:18,220 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:18,220 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:18,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 14:34:18,221 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:18,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1499461480, now seen corresponding path program 20 times [2021-03-11 14:34:18,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:18,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885186645] [2021-03-11 14:34:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:18,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:18,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:18,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:18,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:18,262 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:18,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:18,274 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:18,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:18,290 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:18,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:18,312 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:18,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:18,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885186645] [2021-03-11 14:34:18,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:18,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:18,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695477508] [2021-03-11 14:34:18,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:18,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:18,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:18,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:18,334 INFO L87 Difference]: Start difference. First operand 442 states and 1515 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:18,408 INFO L93 Difference]: Finished difference Result 850 states and 2628 transitions. [2021-03-11 14:34:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:18,411 INFO L225 Difference]: With dead ends: 850 [2021-03-11 14:34:18,411 INFO L226 Difference]: Without dead ends: 804 [2021-03-11 14:34:18,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-03-11 14:34:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 433. [2021-03-11 14:34:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 3.4375) internal successors, (1485), 432 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1485 transitions. [2021-03-11 14:34:18,425 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1485 transitions. Word has length 19 [2021-03-11 14:34:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:18,425 INFO L480 AbstractCegarLoop]: Abstraction has 433 states and 1485 transitions. [2021-03-11 14:34:18,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1485 transitions. [2021-03-11 14:34:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:18,426 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:18,426 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:18,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 14:34:18,426 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:18,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1939604516, now seen corresponding path program 21 times [2021-03-11 14:34:18,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:18,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047123652] [2021-03-11 14:34:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:18,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:18,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:18,443 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:18,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:18,451 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:18,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:18,464 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:18,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:18,485 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:18,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:18,511 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:18,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:18,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047123652] [2021-03-11 14:34:18,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:18,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:18,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717858143] [2021-03-11 14:34:18,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:18,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:18,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:18,535 INFO L87 Difference]: Start difference. First operand 433 states and 1485 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:18,617 INFO L93 Difference]: Finished difference Result 875 states and 2726 transitions. [2021-03-11 14:34:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:18,619 INFO L225 Difference]: With dead ends: 875 [2021-03-11 14:34:18,619 INFO L226 Difference]: Without dead ends: 827 [2021-03-11 14:34:18,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:18,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-03-11 14:34:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 449. [2021-03-11 14:34:18,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 3.421875) internal successors, (1533), 448 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1533 transitions. [2021-03-11 14:34:18,632 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1533 transitions. Word has length 19 [2021-03-11 14:34:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:18,632 INFO L480 AbstractCegarLoop]: Abstraction has 449 states and 1533 transitions. [2021-03-11 14:34:18,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,632 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1533 transitions. [2021-03-11 14:34:18,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:18,633 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:18,633 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:18,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 14:34:18,634 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:18,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:18,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1081324632, now seen corresponding path program 22 times [2021-03-11 14:34:18,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:18,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313966613] [2021-03-11 14:34:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:18,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:18,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:18,659 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:18,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:18,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:18,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:18,680 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:18,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:18,696 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:18,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:18,728 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:18,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:18,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313966613] [2021-03-11 14:34:18,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:18,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:18,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785981751] [2021-03-11 14:34:18,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:18,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:18,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:18,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:18,752 INFO L87 Difference]: Start difference. First operand 449 states and 1533 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:18,825 INFO L93 Difference]: Finished difference Result 871 states and 2698 transitions. [2021-03-11 14:34:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:18,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:18,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:18,827 INFO L225 Difference]: With dead ends: 871 [2021-03-11 14:34:18,827 INFO L226 Difference]: Without dead ends: 811 [2021-03-11 14:34:18,828 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-03-11 14:34:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 433. [2021-03-11 14:34:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 3.4189814814814814) internal successors, (1477), 432 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1477 transitions. [2021-03-11 14:34:18,839 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1477 transitions. Word has length 19 [2021-03-11 14:34:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:18,839 INFO L480 AbstractCegarLoop]: Abstraction has 433 states and 1477 transitions. [2021-03-11 14:34:18,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1477 transitions. [2021-03-11 14:34:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:18,841 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:18,841 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:18,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 14:34:18,841 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:18,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:18,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1958633188, now seen corresponding path program 23 times [2021-03-11 14:34:18,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:18,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115543211] [2021-03-11 14:34:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:18,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:18,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:18,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:18,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:18,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:18,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:18,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:18,879 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:18,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:18,895 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:18,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:18,919 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:18,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:18,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115543211] [2021-03-11 14:34:18,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:18,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:18,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655275838] [2021-03-11 14:34:18,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:18,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:18,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:18,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:18,943 INFO L87 Difference]: Start difference. First operand 433 states and 1477 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:19,005 INFO L93 Difference]: Finished difference Result 845 states and 2606 transitions. [2021-03-11 14:34:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:19,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:19,008 INFO L225 Difference]: With dead ends: 845 [2021-03-11 14:34:19,008 INFO L226 Difference]: Without dead ends: 808 [2021-03-11 14:34:19,008 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-03-11 14:34:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 441. [2021-03-11 14:34:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 3.4022727272727273) internal successors, (1497), 440 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1497 transitions. [2021-03-11 14:34:19,020 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1497 transitions. Word has length 19 [2021-03-11 14:34:19,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:19,020 INFO L480 AbstractCegarLoop]: Abstraction has 441 states and 1497 transitions. [2021-03-11 14:34:19,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,020 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1497 transitions. [2021-03-11 14:34:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:19,021 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:19,021 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:19,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 14:34:19,021 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:19,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1099758658, now seen corresponding path program 24 times [2021-03-11 14:34:19,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:19,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82958679] [2021-03-11 14:34:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:19,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:19,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:19,038 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:19,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:19,047 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:19,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:19,059 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:19,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:19,076 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:19,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:19,099 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:19,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:19,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82958679] [2021-03-11 14:34:19,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:19,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:19,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303522808] [2021-03-11 14:34:19,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:19,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:19,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:19,124 INFO L87 Difference]: Start difference. First operand 441 states and 1497 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:19,202 INFO L93 Difference]: Finished difference Result 852 states and 2624 transitions. [2021-03-11 14:34:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:19,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:19,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:19,204 INFO L225 Difference]: With dead ends: 852 [2021-03-11 14:34:19,204 INFO L226 Difference]: Without dead ends: 784 [2021-03-11 14:34:19,204 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-03-11 14:34:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 417. [2021-03-11 14:34:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 3.4591346153846154) internal successors, (1439), 416 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1439 transitions. [2021-03-11 14:34:19,222 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1439 transitions. Word has length 19 [2021-03-11 14:34:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:19,222 INFO L480 AbstractCegarLoop]: Abstraction has 417 states and 1439 transitions. [2021-03-11 14:34:19,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1439 transitions. [2021-03-11 14:34:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:19,223 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:19,224 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:19,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 14:34:19,224 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:19,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:19,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1228367856, now seen corresponding path program 25 times [2021-03-11 14:34:19,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:19,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515706284] [2021-03-11 14:34:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:19,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:19,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:19,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:19,254 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:19,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:19,267 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:19,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:19,286 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:19,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:19,310 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:19,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:19,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515706284] [2021-03-11 14:34:19,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:19,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:19,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788061241] [2021-03-11 14:34:19,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:19,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:19,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:19,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:19,333 INFO L87 Difference]: Start difference. First operand 417 states and 1439 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:19,389 INFO L93 Difference]: Finished difference Result 860 states and 2665 transitions. [2021-03-11 14:34:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:19,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:19,392 INFO L225 Difference]: With dead ends: 860 [2021-03-11 14:34:19,392 INFO L226 Difference]: Without dead ends: 822 [2021-03-11 14:34:19,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:19,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-03-11 14:34:19,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 446. [2021-03-11 14:34:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.447191011235955) internal successors, (1534), 445 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1534 transitions. [2021-03-11 14:34:19,403 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1534 transitions. Word has length 19 [2021-03-11 14:34:19,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:19,403 INFO L480 AbstractCegarLoop]: Abstraction has 446 states and 1534 transitions. [2021-03-11 14:34:19,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,403 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1534 transitions. [2021-03-11 14:34:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:19,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:19,404 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:19,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 14:34:19,404 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:19,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:19,405 INFO L82 PathProgramCache]: Analyzing trace with hash -853716670, now seen corresponding path program 26 times [2021-03-11 14:34:19,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:19,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824632306] [2021-03-11 14:34:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:19,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:19,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:19,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:19,439 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:19,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:19,452 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:19,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:19,470 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:19,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:19,494 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:19,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:19,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824632306] [2021-03-11 14:34:19,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:19,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:19,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714888515] [2021-03-11 14:34:19,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:19,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:19,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:19,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:19,518 INFO L87 Difference]: Start difference. First operand 446 states and 1534 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:19,591 INFO L93 Difference]: Finished difference Result 870 states and 2692 transitions. [2021-03-11 14:34:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:19,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:19,593 INFO L225 Difference]: With dead ends: 870 [2021-03-11 14:34:19,593 INFO L226 Difference]: Without dead ends: 811 [2021-03-11 14:34:19,594 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-03-11 14:34:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 435. [2021-03-11 14:34:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.456221198156682) internal successors, (1500), 434 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1500 transitions. [2021-03-11 14:34:19,605 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1500 transitions. Word has length 19 [2021-03-11 14:34:19,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:19,605 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 1500 transitions. [2021-03-11 14:34:19,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1500 transitions. [2021-03-11 14:34:19,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:19,606 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:19,606 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:19,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 14:34:19,606 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:19,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:19,607 INFO L82 PathProgramCache]: Analyzing trace with hash -46978102, now seen corresponding path program 27 times [2021-03-11 14:34:19,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:19,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511969117] [2021-03-11 14:34:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:19,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:19,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:19,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:19,637 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:19,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:19,654 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:19,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:19,672 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:19,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:19,696 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:19,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:19,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511969117] [2021-03-11 14:34:19,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:19,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:19,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260294951] [2021-03-11 14:34:19,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:19,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:19,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:19,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:19,721 INFO L87 Difference]: Start difference. First operand 435 states and 1500 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:19,776 INFO L93 Difference]: Finished difference Result 854 states and 2639 transitions. [2021-03-11 14:34:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:19,778 INFO L225 Difference]: With dead ends: 854 [2021-03-11 14:34:19,778 INFO L226 Difference]: Without dead ends: 816 [2021-03-11 14:34:19,778 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:19,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-03-11 14:34:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 444. [2021-03-11 14:34:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.433408577878104) internal successors, (1521), 443 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1521 transitions. [2021-03-11 14:34:19,798 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1521 transitions. Word has length 19 [2021-03-11 14:34:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:19,798 INFO L480 AbstractCegarLoop]: Abstraction has 444 states and 1521 transitions. [2021-03-11 14:34:19,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1521 transitions. [2021-03-11 14:34:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:19,799 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:19,799 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:19,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 14:34:19,799 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:19,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:19,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1023182852, now seen corresponding path program 28 times [2021-03-11 14:34:19,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:19,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000656016] [2021-03-11 14:34:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:19,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:19,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:19,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:19,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:19,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:19,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:19,837 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:19,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:19,854 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:19,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:19,876 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:19,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:19,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000656016] [2021-03-11 14:34:19,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:19,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:19,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887679490] [2021-03-11 14:34:19,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:19,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:19,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:19,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:19,900 INFO L87 Difference]: Start difference. First operand 444 states and 1521 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:19,978 INFO L93 Difference]: Finished difference Result 860 states and 2655 transitions. [2021-03-11 14:34:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:19,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:19,980 INFO L225 Difference]: With dead ends: 860 [2021-03-11 14:34:19,981 INFO L226 Difference]: Without dead ends: 807 [2021-03-11 14:34:19,981 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:19,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2021-03-11 14:34:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 435. [2021-03-11 14:34:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.435483870967742) internal successors, (1491), 434 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1491 transitions. [2021-03-11 14:34:19,992 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1491 transitions. Word has length 19 [2021-03-11 14:34:19,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:19,992 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 1491 transitions. [2021-03-11 14:34:19,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1491 transitions. [2021-03-11 14:34:19,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:19,993 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:19,993 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:19,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 14:34:19,993 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:19,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:19,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1142789438, now seen corresponding path program 29 times [2021-03-11 14:34:19,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:19,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454581859] [2021-03-11 14:34:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:20,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:20,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:20,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:20,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:20,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:20,029 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:20,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:20,046 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:20,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:20,069 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:20,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:20,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454581859] [2021-03-11 14:34:20,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:20,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:20,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699204717] [2021-03-11 14:34:20,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:20,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:20,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:20,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:20,092 INFO L87 Difference]: Start difference. First operand 435 states and 1491 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:20,161 INFO L93 Difference]: Finished difference Result 881 states and 2738 transitions. [2021-03-11 14:34:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:20,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:20,164 INFO L225 Difference]: With dead ends: 881 [2021-03-11 14:34:20,164 INFO L226 Difference]: Without dead ends: 833 [2021-03-11 14:34:20,165 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-03-11 14:34:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 451. [2021-03-11 14:34:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 3.42) internal successors, (1539), 450 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1539 transitions. [2021-03-11 14:34:20,178 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1539 transitions. Word has length 19 [2021-03-11 14:34:20,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:20,178 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 1539 transitions. [2021-03-11 14:34:20,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,178 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1539 transitions. [2021-03-11 14:34:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:20,179 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:20,179 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:20,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 14:34:20,180 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:20,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:20,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2001069322, now seen corresponding path program 30 times [2021-03-11 14:34:20,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:20,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497892554] [2021-03-11 14:34:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:20,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:20,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:20,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:20,206 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:20,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:20,218 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:20,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:20,239 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:20,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:20,261 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:20,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:20,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497892554] [2021-03-11 14:34:20,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:20,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:20,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65315414] [2021-03-11 14:34:20,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:20,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:20,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:20,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:20,283 INFO L87 Difference]: Start difference. First operand 451 states and 1539 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:20,360 INFO L93 Difference]: Finished difference Result 877 states and 2710 transitions. [2021-03-11 14:34:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:20,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:20,363 INFO L225 Difference]: With dead ends: 877 [2021-03-11 14:34:20,364 INFO L226 Difference]: Without dead ends: 806 [2021-03-11 14:34:20,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-03-11 14:34:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 424. [2021-03-11 14:34:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 3.4539007092198584) internal successors, (1461), 423 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1461 transitions. [2021-03-11 14:34:20,376 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1461 transitions. Word has length 19 [2021-03-11 14:34:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:20,376 INFO L480 AbstractCegarLoop]: Abstraction has 424 states and 1461 transitions. [2021-03-11 14:34:20,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1461 transitions. [2021-03-11 14:34:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:20,377 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:20,377 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:20,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 14:34:20,377 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash 784001922, now seen corresponding path program 31 times [2021-03-11 14:34:20,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:20,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802578776] [2021-03-11 14:34:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:20,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:20,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:20,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:20,402 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:20,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:20,423 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:20,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:20,442 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:20,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:20,465 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:20,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:20,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802578776] [2021-03-11 14:34:20,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:20,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:20,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089140018] [2021-03-11 14:34:20,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:20,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:20,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:20,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:20,487 INFO L87 Difference]: Start difference. First operand 424 states and 1461 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:20,540 INFO L93 Difference]: Finished difference Result 837 states and 2562 transitions. [2021-03-11 14:34:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:20,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:20,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:20,542 INFO L225 Difference]: With dead ends: 837 [2021-03-11 14:34:20,542 INFO L226 Difference]: Without dead ends: 799 [2021-03-11 14:34:20,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:20,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-03-11 14:34:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 441. [2021-03-11 14:34:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 3.422727272727273) internal successors, (1506), 440 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1506 transitions. [2021-03-11 14:34:20,555 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1506 transitions. Word has length 19 [2021-03-11 14:34:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:20,555 INFO L480 AbstractCegarLoop]: Abstraction has 441 states and 1506 transitions. [2021-03-11 14:34:20,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1506 transitions. [2021-03-11 14:34:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:20,556 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:20,556 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:20,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 14:34:20,556 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:20,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:20,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1158653108, now seen corresponding path program 32 times [2021-03-11 14:34:20,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:20,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846963815] [2021-03-11 14:34:20,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:20,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:20,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:20,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:20,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:20,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:20,613 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:20,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:20,630 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:20,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:20,654 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:20,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:20,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846963815] [2021-03-11 14:34:20,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:20,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:20,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184909017] [2021-03-11 14:34:20,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:20,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:20,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:20,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:20,678 INFO L87 Difference]: Start difference. First operand 441 states and 1506 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:20,748 INFO L93 Difference]: Finished difference Result 847 states and 2589 transitions. [2021-03-11 14:34:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:20,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:20,752 INFO L225 Difference]: With dead ends: 847 [2021-03-11 14:34:20,752 INFO L226 Difference]: Without dead ends: 788 [2021-03-11 14:34:20,753 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:20,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-03-11 14:34:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 430. [2021-03-11 14:34:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.4405594405594404) internal successors, (1476), 429 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1476 transitions. [2021-03-11 14:34:20,765 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1476 transitions. Word has length 19 [2021-03-11 14:34:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:20,766 INFO L480 AbstractCegarLoop]: Abstraction has 430 states and 1476 transitions. [2021-03-11 14:34:20,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1476 transitions. [2021-03-11 14:34:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:20,767 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:20,767 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:20,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 14:34:20,767 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash 988603004, now seen corresponding path program 33 times [2021-03-11 14:34:20,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:20,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321520647] [2021-03-11 14:34:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:20,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:20,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:20,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:20,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:20,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:20,820 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:20,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:20,845 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:20,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:20,869 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:20,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:20,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321520647] [2021-03-11 14:34:20,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:20,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:20,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922167117] [2021-03-11 14:34:20,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:20,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:20,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:20,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:20,893 INFO L87 Difference]: Start difference. First operand 430 states and 1476 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:20,948 INFO L93 Difference]: Finished difference Result 820 states and 2498 transitions. [2021-03-11 14:34:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:20,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:20,951 INFO L225 Difference]: With dead ends: 820 [2021-03-11 14:34:20,951 INFO L226 Difference]: Without dead ends: 782 [2021-03-11 14:34:20,951 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-03-11 14:34:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 435. [2021-03-11 14:34:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.421658986175115) internal successors, (1485), 434 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1485 transitions. [2021-03-11 14:34:20,962 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1485 transitions. Word has length 19 [2021-03-11 14:34:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:20,962 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 1485 transitions. [2021-03-11 14:34:20,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1485 transitions. [2021-03-11 14:34:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:20,963 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:20,963 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:20,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 14:34:20,963 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:20,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1865254260, now seen corresponding path program 1 times [2021-03-11 14:34:20,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:20,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184626753] [2021-03-11 14:34:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:20,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:20,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:34:20,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:20,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:20,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184626753] [2021-03-11 14:34:20,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:20,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:34:20,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524497037] [2021-03-11 14:34:20,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:34:20,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:20,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:34:20,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:20,972 INFO L87 Difference]: Start difference. First operand 435 states and 1485 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:20,978 INFO L93 Difference]: Finished difference Result 349 states and 1112 transitions. [2021-03-11 14:34:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:34:20,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:20,979 INFO L225 Difference]: With dead ends: 349 [2021-03-11 14:34:20,979 INFO L226 Difference]: Without dead ends: 349 [2021-03-11 14:34:20,979 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-03-11 14:34:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2021-03-11 14:34:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.1954022988505746) internal successors, (1112), 348 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1112 transitions. [2021-03-11 14:34:20,986 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1112 transitions. Word has length 19 [2021-03-11 14:34:20,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:20,987 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 1112 transitions. [2021-03-11 14:34:20,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1112 transitions. [2021-03-11 14:34:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:20,987 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:20,987 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:20,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 14:34:20,988 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:20,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:20,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1163123542, now seen corresponding path program 34 times [2021-03-11 14:34:20,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:20,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654216831] [2021-03-11 14:34:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:21,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:21,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:21,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:21,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:21,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:21,039 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:21,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:21,066 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:21,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:21,089 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:21,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:21,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654216831] [2021-03-11 14:34:21,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:21,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:21,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687513034] [2021-03-11 14:34:21,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:21,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:21,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:21,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:21,114 INFO L87 Difference]: Start difference. First operand 349 states and 1112 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:21,183 INFO L93 Difference]: Finished difference Result 644 states and 1770 transitions. [2021-03-11 14:34:21,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:21,185 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:34:21,185 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:34:21,185 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:34:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 346. [2021-03-11 14:34:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.2028985507246377) internal successors, (1105), 345 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1105 transitions. [2021-03-11 14:34:21,193 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1105 transitions. Word has length 19 [2021-03-11 14:34:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:21,193 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 1105 transitions. [2021-03-11 14:34:21,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1105 transitions. [2021-03-11 14:34:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:21,194 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:21,194 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:21,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 14:34:21,195 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:21,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:21,195 INFO L82 PathProgramCache]: Analyzing trace with hash -409413030, now seen corresponding path program 35 times [2021-03-11 14:34:21,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:21,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641916344] [2021-03-11 14:34:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:21,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:21,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:21,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:21,219 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:21,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:21,241 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:21,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:21,265 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:21,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:21,283 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:21,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:21,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641916344] [2021-03-11 14:34:21,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:21,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:21,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567198835] [2021-03-11 14:34:21,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:21,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:21,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:21,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:21,302 INFO L87 Difference]: Start difference. First operand 346 states and 1105 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:21,380 INFO L93 Difference]: Finished difference Result 666 states and 1842 transitions. [2021-03-11 14:34:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:21,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:21,382 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:34:21,382 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:34:21,383 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:34:21,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 352. [2021-03-11 14:34:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 3.1823361823361824) internal successors, (1117), 351 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1117 transitions. [2021-03-11 14:34:21,392 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1117 transitions. Word has length 19 [2021-03-11 14:34:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:21,393 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 1117 transitions. [2021-03-11 14:34:21,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,393 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1117 transitions. [2021-03-11 14:34:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:21,393 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:21,394 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:21,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 14:34:21,394 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:21,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:21,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1283748356, now seen corresponding path program 36 times [2021-03-11 14:34:21,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:21,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776437737] [2021-03-11 14:34:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:21,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:21,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:21,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:21,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:21,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:21,438 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:21,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:21,467 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:21,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:21,488 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:21,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:21,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776437737] [2021-03-11 14:34:21,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:21,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:21,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418763286] [2021-03-11 14:34:21,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:21,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:21,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:21,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:21,514 INFO L87 Difference]: Start difference. First operand 352 states and 1117 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:21,596 INFO L93 Difference]: Finished difference Result 656 states and 1805 transitions. [2021-03-11 14:34:21,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:21,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:21,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:21,598 INFO L225 Difference]: With dead ends: 656 [2021-03-11 14:34:21,598 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:34:21,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:34:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 342. [2021-03-11 14:34:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 3.2140762463343107) internal successors, (1096), 341 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1096 transitions. [2021-03-11 14:34:21,606 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1096 transitions. Word has length 19 [2021-03-11 14:34:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:21,607 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 1096 transitions. [2021-03-11 14:34:21,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1096 transitions. [2021-03-11 14:34:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:21,607 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:21,607 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:21,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 14:34:21,608 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:21,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1043020286, now seen corresponding path program 37 times [2021-03-11 14:34:21,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:21,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289116965] [2021-03-11 14:34:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:21,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:21,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:21,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:21,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:21,644 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:21,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:21,673 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:21,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:21,696 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:21,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:21,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289116965] [2021-03-11 14:34:21,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:21,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:21,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491087197] [2021-03-11 14:34:21,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:21,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:21,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:21,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:21,718 INFO L87 Difference]: Start difference. First operand 342 states and 1096 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:21,773 INFO L93 Difference]: Finished difference Result 637 states and 1753 transitions. [2021-03-11 14:34:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:21,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:21,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:21,775 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:34:21,775 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:34:21,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:34:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 348. [2021-03-11 14:34:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 3.1988472622478388) internal successors, (1110), 347 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1110 transitions. [2021-03-11 14:34:21,783 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1110 transitions. Word has length 19 [2021-03-11 14:34:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:21,784 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 1110 transitions. [2021-03-11 14:34:21,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1110 transitions. [2021-03-11 14:34:21,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:21,784 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:21,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:21,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 14:34:21,785 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:21,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:21,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1100220464, now seen corresponding path program 38 times [2021-03-11 14:34:21,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:21,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658725184] [2021-03-11 14:34:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:21,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:21,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:21,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:21,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:21,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:21,822 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:21,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:21,851 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:21,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:21,888 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:21,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:21,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658725184] [2021-03-11 14:34:21,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:21,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:21,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831377388] [2021-03-11 14:34:21,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:21,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:21,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:21,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:21,913 INFO L87 Difference]: Start difference. First operand 348 states and 1110 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:21,980 INFO L93 Difference]: Finished difference Result 636 states and 1749 transitions. [2021-03-11 14:34:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:21,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:21,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:21,982 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:34:21,982 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:34:21,982 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:34:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 345. [2021-03-11 14:34:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.2063953488372094) internal successors, (1103), 344 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1103 transitions. [2021-03-11 14:34:21,993 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1103 transitions. Word has length 19 [2021-03-11 14:34:21,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:21,993 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1103 transitions. [2021-03-11 14:34:21,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1103 transitions. [2021-03-11 14:34:21,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:21,994 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:21,994 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:21,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 14:34:21,994 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:21,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1549366552, now seen corresponding path program 39 times [2021-03-11 14:34:21,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:21,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425891951] [2021-03-11 14:34:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:22,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:22,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:22,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:22,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:22,034 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:22,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:22,049 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:22,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:22,068 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:22,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:22,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425891951] [2021-03-11 14:34:22,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:22,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:22,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901745112] [2021-03-11 14:34:22,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:22,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:22,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:22,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:22,090 INFO L87 Difference]: Start difference. First operand 345 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:22,140 INFO L93 Difference]: Finished difference Result 646 states and 1779 transitions. [2021-03-11 14:34:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:22,141 INFO L225 Difference]: With dead ends: 646 [2021-03-11 14:34:22,141 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:34:22,141 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:22,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:34:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 351. [2021-03-11 14:34:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 3.182857142857143) internal successors, (1114), 350 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1114 transitions. [2021-03-11 14:34:22,149 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1114 transitions. Word has length 19 [2021-03-11 14:34:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:22,149 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 1114 transitions. [2021-03-11 14:34:22,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1114 transitions. [2021-03-11 14:34:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:22,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:22,150 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:22,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 14:34:22,150 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1769395994, now seen corresponding path program 40 times [2021-03-11 14:34:22,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:22,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047320972] [2021-03-11 14:34:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:22,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:22,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:22,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:22,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:22,183 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:22,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:22,200 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:22,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:22,221 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:22,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:22,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047320972] [2021-03-11 14:34:22,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:22,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:22,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858978170] [2021-03-11 14:34:22,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:22,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:22,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:22,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:22,243 INFO L87 Difference]: Start difference. First operand 351 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:22,310 INFO L93 Difference]: Finished difference Result 651 states and 1791 transitions. [2021-03-11 14:34:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:22,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:22,311 INFO L225 Difference]: With dead ends: 651 [2021-03-11 14:34:22,311 INFO L226 Difference]: Without dead ends: 609 [2021-03-11 14:34:22,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-03-11 14:34:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 345. [2021-03-11 14:34:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.197674418604651) internal successors, (1100), 344 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1100 transitions. [2021-03-11 14:34:22,319 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1100 transitions. Word has length 19 [2021-03-11 14:34:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:22,319 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1100 transitions. [2021-03-11 14:34:22,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1100 transitions. [2021-03-11 14:34:22,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:22,320 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:22,320 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:22,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 14:34:22,320 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:22,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1215861966, now seen corresponding path program 41 times [2021-03-11 14:34:22,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:22,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748759721] [2021-03-11 14:34:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:22,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:22,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:22,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:22,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:22,354 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:22,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:22,370 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:22,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:22,392 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:22,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:22,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748759721] [2021-03-11 14:34:22,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:22,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:22,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919337100] [2021-03-11 14:34:22,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:22,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:22,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:22,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:22,414 INFO L87 Difference]: Start difference. First operand 345 states and 1100 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:22,485 INFO L93 Difference]: Finished difference Result 643 states and 1772 transitions. [2021-03-11 14:34:22,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:22,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:22,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:22,487 INFO L225 Difference]: With dead ends: 643 [2021-03-11 14:34:22,487 INFO L226 Difference]: Without dead ends: 613 [2021-03-11 14:34:22,487 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:22,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-11 14:34:22,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 350. [2021-03-11 14:34:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 3.180515759312321) internal successors, (1110), 349 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1110 transitions. [2021-03-11 14:34:22,495 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1110 transitions. Word has length 19 [2021-03-11 14:34:22,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:22,495 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 1110 transitions. [2021-03-11 14:34:22,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1110 transitions. [2021-03-11 14:34:22,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:22,496 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:22,496 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:22,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 14:34:22,496 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:22,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:22,496 INFO L82 PathProgramCache]: Analyzing trace with hash -513185368, now seen corresponding path program 42 times [2021-03-11 14:34:22,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:22,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071528762] [2021-03-11 14:34:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:22,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:22,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:22,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:22,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:22,536 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:22,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:22,553 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:22,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:22,583 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:22,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:22,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071528762] [2021-03-11 14:34:22,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:22,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:22,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345837246] [2021-03-11 14:34:22,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:22,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:22,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:22,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:22,604 INFO L87 Difference]: Start difference. First operand 350 states and 1110 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:22,670 INFO L93 Difference]: Finished difference Result 649 states and 1786 transitions. [2021-03-11 14:34:22,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:22,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:22,671 INFO L225 Difference]: With dead ends: 649 [2021-03-11 14:34:22,671 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:34:22,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:34:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 342. [2021-03-11 14:34:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 3.2052785923753664) internal successors, (1093), 341 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1093 transitions. [2021-03-11 14:34:22,679 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1093 transitions. Word has length 19 [2021-03-11 14:34:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:22,679 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 1093 transitions. [2021-03-11 14:34:22,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1093 transitions. [2021-03-11 14:34:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:22,680 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:22,680 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:22,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 14:34:22,680 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:22,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1822419634, now seen corresponding path program 43 times [2021-03-11 14:34:22,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:22,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019975331] [2021-03-11 14:34:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:22,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:22,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:22,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:22,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:22,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:22,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:22,745 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:22,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:22,768 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:22,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:22,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019975331] [2021-03-11 14:34:22,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:22,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:22,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935229710] [2021-03-11 14:34:22,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:22,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:22,790 INFO L87 Difference]: Start difference. First operand 342 states and 1093 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:22,857 INFO L93 Difference]: Finished difference Result 678 states and 1898 transitions. [2021-03-11 14:34:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:22,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:22,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:22,858 INFO L225 Difference]: With dead ends: 678 [2021-03-11 14:34:22,858 INFO L226 Difference]: Without dead ends: 638 [2021-03-11 14:34:22,858 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-03-11 14:34:22,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 353. [2021-03-11 14:34:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.196022727272727) internal successors, (1125), 352 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1125 transitions. [2021-03-11 14:34:22,867 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1125 transitions. Word has length 19 [2021-03-11 14:34:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:22,867 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 1125 transitions. [2021-03-11 14:34:22,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1125 transitions. [2021-03-11 14:34:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:22,868 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:22,868 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:22,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 14:34:22,868 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:22,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1598212336, now seen corresponding path program 44 times [2021-03-11 14:34:22,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:22,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464899391] [2021-03-11 14:34:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:22,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:22,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:22,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:22,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:22,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:22,922 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:22,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:22,955 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:22,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:22,984 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:22,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:23,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464899391] [2021-03-11 14:34:23,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:23,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:23,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539315302] [2021-03-11 14:34:23,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:23,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:23,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:23,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:23,007 INFO L87 Difference]: Start difference. First operand 353 states and 1125 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:23,074 INFO L93 Difference]: Finished difference Result 668 states and 1861 transitions. [2021-03-11 14:34:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:23,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:23,075 INFO L225 Difference]: With dead ends: 668 [2021-03-11 14:34:23,075 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:34:23,076 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:34:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 347. [2021-03-11 14:34:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.2023121387283235) internal successors, (1108), 346 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1108 transitions. [2021-03-11 14:34:23,086 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1108 transitions. Word has length 19 [2021-03-11 14:34:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:23,086 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 1108 transitions. [2021-03-11 14:34:23,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1108 transitions. [2021-03-11 14:34:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:23,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:23,087 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:23,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 14:34:23,087 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:23,087 INFO L82 PathProgramCache]: Analyzing trace with hash 411687860, now seen corresponding path program 45 times [2021-03-11 14:34:23,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:23,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89103147] [2021-03-11 14:34:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:23,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:23,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:23,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:23,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:23,135 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:23,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:23,157 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:23,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:23,182 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:23,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:23,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89103147] [2021-03-11 14:34:23,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:23,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:23,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90122516] [2021-03-11 14:34:23,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:23,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:23,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:23,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:23,206 INFO L87 Difference]: Start difference. First operand 347 states and 1108 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:23,282 INFO L93 Difference]: Finished difference Result 690 states and 1937 transitions. [2021-03-11 14:34:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:23,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:23,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:23,284 INFO L225 Difference]: With dead ends: 690 [2021-03-11 14:34:23,284 INFO L226 Difference]: Without dead ends: 650 [2021-03-11 14:34:23,284 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-03-11 14:34:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 359. [2021-03-11 14:34:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 3.1815642458100557) internal successors, (1139), 358 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1139 transitions. [2021-03-11 14:34:23,293 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1139 transitions. Word has length 19 [2021-03-11 14:34:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:23,293 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 1139 transitions. [2021-03-11 14:34:23,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1139 transitions. [2021-03-11 14:34:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:23,294 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:23,294 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:23,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 14:34:23,295 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:23,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1380571900, now seen corresponding path program 46 times [2021-03-11 14:34:23,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:23,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139128264] [2021-03-11 14:34:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:23,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:23,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:23,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:23,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:23,335 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:23,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:23,353 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:23,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:23,372 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:23,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:23,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139128264] [2021-03-11 14:34:23,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:23,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:23,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578319488] [2021-03-11 14:34:23,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:23,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:23,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:23,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:23,407 INFO L87 Difference]: Start difference. First operand 359 states and 1139 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:23,471 INFO L93 Difference]: Finished difference Result 686 states and 1913 transitions. [2021-03-11 14:34:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:23,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:23,472 INFO L225 Difference]: With dead ends: 686 [2021-03-11 14:34:23,472 INFO L226 Difference]: Without dead ends: 638 [2021-03-11 14:34:23,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:23,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-03-11 14:34:23,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 347. [2021-03-11 14:34:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.1878612716763004) internal successors, (1103), 346 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1103 transitions. [2021-03-11 14:34:23,479 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1103 transitions. Word has length 19 [2021-03-11 14:34:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:23,479 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 1103 transitions. [2021-03-11 14:34:23,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1103 transitions. [2021-03-11 14:34:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:23,480 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:23,480 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:23,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 14:34:23,480 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:23,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:23,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1771460028, now seen corresponding path program 47 times [2021-03-11 14:34:23,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:23,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726904734] [2021-03-11 14:34:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:23,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:23,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:23,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:23,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:23,522 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:23,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:23,539 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:23,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:23,561 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:23,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:23,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726904734] [2021-03-11 14:34:23,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:23,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:23,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123081334] [2021-03-11 14:34:23,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:23,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:23,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:23,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:23,584 INFO L87 Difference]: Start difference. First operand 347 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:23,660 INFO L93 Difference]: Finished difference Result 663 states and 1842 transitions. [2021-03-11 14:34:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:23,662 INFO L225 Difference]: With dead ends: 663 [2021-03-11 14:34:23,662 INFO L226 Difference]: Without dead ends: 633 [2021-03-11 14:34:23,662 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-03-11 14:34:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 352. [2021-03-11 14:34:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 3.1709401709401708) internal successors, (1113), 351 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1113 transitions. [2021-03-11 14:34:23,669 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1113 transitions. Word has length 19 [2021-03-11 14:34:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:23,669 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 1113 transitions. [2021-03-11 14:34:23,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1113 transitions. [2021-03-11 14:34:23,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:23,670 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:23,670 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:23,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 14:34:23,670 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:23,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:23,670 INFO L82 PathProgramCache]: Analyzing trace with hash 42412694, now seen corresponding path program 48 times [2021-03-11 14:34:23,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:23,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052595917] [2021-03-11 14:34:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:23,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:23,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:23,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:23,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:23,703 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:23,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:23,720 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:23,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:23,742 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:23,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:23,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052595917] [2021-03-11 14:34:23,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:23,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:23,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829583539] [2021-03-11 14:34:23,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:23,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:23,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:23,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:23,761 INFO L87 Difference]: Start difference. First operand 352 states and 1113 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:23,829 INFO L93 Difference]: Finished difference Result 669 states and 1856 transitions. [2021-03-11 14:34:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:23,830 INFO L225 Difference]: With dead ends: 669 [2021-03-11 14:34:23,830 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:34:23,830 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:34:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 337. [2021-03-11 14:34:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 3.2202380952380953) internal successors, (1082), 336 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 1082 transitions. [2021-03-11 14:34:23,836 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 1082 transitions. Word has length 19 [2021-03-11 14:34:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:23,836 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 1082 transitions. [2021-03-11 14:34:23,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 1082 transitions. [2021-03-11 14:34:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:23,837 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:23,837 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:23,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 14:34:23,837 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:23,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1950102064, now seen corresponding path program 49 times [2021-03-11 14:34:23,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:23,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147516472] [2021-03-11 14:34:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:23,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:23,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:23,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:23,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:23,861 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:23,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:23,881 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:23,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:23,898 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:23,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:23,923 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:23,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:23,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147516472] [2021-03-11 14:34:23,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:23,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:23,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686272507] [2021-03-11 14:34:23,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:23,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:23,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:23,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:23,943 INFO L87 Difference]: Start difference. First operand 337 states and 1082 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:24,003 INFO L93 Difference]: Finished difference Result 648 states and 1785 transitions. [2021-03-11 14:34:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:24,005 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:34:24,005 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:34:24,005 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:34:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 353. [2021-03-11 14:34:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.1931818181818183) internal successors, (1124), 352 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1124 transitions. [2021-03-11 14:34:24,011 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1124 transitions. Word has length 19 [2021-03-11 14:34:24,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:24,012 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 1124 transitions. [2021-03-11 14:34:24,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1124 transitions. [2021-03-11 14:34:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:24,012 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:24,012 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:24,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 14:34:24,013 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1575450878, now seen corresponding path program 50 times [2021-03-11 14:34:24,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:24,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962040671] [2021-03-11 14:34:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:24,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:24,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:24,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:24,036 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:24,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:24,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:24,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:24,074 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:24,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:24,094 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:24,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:24,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962040671] [2021-03-11 14:34:24,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:24,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:24,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390425769] [2021-03-11 14:34:24,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:24,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:24,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:24,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:24,118 INFO L87 Difference]: Start difference. First operand 353 states and 1124 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:24,179 INFO L93 Difference]: Finished difference Result 657 states and 1808 transitions. [2021-03-11 14:34:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:24,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:24,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:24,180 INFO L225 Difference]: With dead ends: 657 [2021-03-11 14:34:24,180 INFO L226 Difference]: Without dead ends: 609 [2021-03-11 14:34:24,180 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-03-11 14:34:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 345. [2021-03-11 14:34:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.2151162790697674) internal successors, (1106), 344 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1106 transitions. [2021-03-11 14:34:24,188 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1106 transitions. Word has length 19 [2021-03-11 14:34:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:24,188 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1106 transitions. [2021-03-11 14:34:24,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,189 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1106 transitions. [2021-03-11 14:34:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:24,189 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:24,189 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:24,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 14:34:24,189 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:24,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:24,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1745500982, now seen corresponding path program 51 times [2021-03-11 14:34:24,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:24,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973926128] [2021-03-11 14:34:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:24,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:24,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:24,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:24,212 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:24,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:24,233 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:24,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:24,264 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:24,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:24,288 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:24,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:24,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973926128] [2021-03-11 14:34:24,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:24,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:24,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209279877] [2021-03-11 14:34:24,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:24,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:24,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:24,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:24,306 INFO L87 Difference]: Start difference. First operand 345 states and 1106 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:24,363 INFO L93 Difference]: Finished difference Result 633 states and 1736 transitions. [2021-03-11 14:34:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:24,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:24,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:24,364 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:34:24,364 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:34:24,365 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:34:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 348. [2021-03-11 14:34:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 3.1988472622478388) internal successors, (1110), 347 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1110 transitions. [2021-03-11 14:34:24,371 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1110 transitions. Word has length 19 [2021-03-11 14:34:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:24,372 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 1110 transitions. [2021-03-11 14:34:24,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,372 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1110 transitions. [2021-03-11 14:34:24,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:24,372 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:24,373 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:24,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 14:34:24,373 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:24,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:24,373 INFO L82 PathProgramCache]: Analyzing trace with hash 397739768, now seen corresponding path program 52 times [2021-03-11 14:34:24,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:24,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952473005] [2021-03-11 14:34:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:24,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:24,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:24,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:24,402 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:24,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:24,422 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:24,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:24,447 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:24,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:24,473 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:24,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:24,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952473005] [2021-03-11 14:34:24,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:24,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:24,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947861914] [2021-03-11 14:34:24,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:24,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:24,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:24,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:24,497 INFO L87 Difference]: Start difference. First operand 348 states and 1110 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:24,569 INFO L93 Difference]: Finished difference Result 632 states and 1732 transitions. [2021-03-11 14:34:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:24,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:24,571 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:34:24,571 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:34:24,571 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:34:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 345. [2021-03-11 14:34:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.2063953488372094) internal successors, (1103), 344 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1103 transitions. [2021-03-11 14:34:24,580 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1103 transitions. Word has length 19 [2021-03-11 14:34:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:24,580 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1103 transitions. [2021-03-11 14:34:24,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1103 transitions. [2021-03-11 14:34:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:24,581 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:24,581 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:24,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 14:34:24,581 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:24,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:24,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1151450280, now seen corresponding path program 53 times [2021-03-11 14:34:24,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:24,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807628660] [2021-03-11 14:34:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:24,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:24,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:24,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:24,603 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:24,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:24,624 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:24,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:24,653 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:24,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:24,675 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:24,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:24,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807628660] [2021-03-11 14:34:24,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:24,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:24,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342517267] [2021-03-11 14:34:24,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:24,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:24,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:24,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:24,699 INFO L87 Difference]: Start difference. First operand 345 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:24,778 INFO L93 Difference]: Finished difference Result 654 states and 1804 transitions. [2021-03-11 14:34:24,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:24,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:24,779 INFO L225 Difference]: With dead ends: 654 [2021-03-11 14:34:24,779 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:34:24,779 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 142.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:24,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:34:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 351. [2021-03-11 14:34:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 3.1857142857142855) internal successors, (1115), 350 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1115 transitions. [2021-03-11 14:34:24,786 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1115 transitions. Word has length 19 [2021-03-11 14:34:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:24,786 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 1115 transitions. [2021-03-11 14:34:24,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1115 transitions. [2021-03-11 14:34:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:24,787 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:24,787 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:24,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 14:34:24,787 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:24,787 INFO L82 PathProgramCache]: Analyzing trace with hash 277114954, now seen corresponding path program 54 times [2021-03-11 14:34:24,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:24,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236730156] [2021-03-11 14:34:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:24,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:24,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:24,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:24,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:24,830 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:24,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:24,853 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:24,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:24,884 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:24,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:24,907 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:24,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:24,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236730156] [2021-03-11 14:34:24,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:24,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:24,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778438875] [2021-03-11 14:34:24,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:24,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:24,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:24,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:24,931 INFO L87 Difference]: Start difference. First operand 351 states and 1115 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:25,020 INFO L93 Difference]: Finished difference Result 644 states and 1767 transitions. [2021-03-11 14:34:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:25,021 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:34:25,022 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:34:25,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 145.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:25,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:34:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 341. [2021-03-11 14:34:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 3.2176470588235295) internal successors, (1094), 340 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1094 transitions. [2021-03-11 14:34:25,029 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1094 transitions. Word has length 19 [2021-03-11 14:34:25,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:25,029 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 1094 transitions. [2021-03-11 14:34:25,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1094 transitions. [2021-03-11 14:34:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:25,030 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:25,030 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:25,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-11 14:34:25,030 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:25,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:25,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1499893780, now seen corresponding path program 55 times [2021-03-11 14:34:25,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:25,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596579626] [2021-03-11 14:34:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:25,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:25,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:25,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:25,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:25,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:25,087 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:25,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:25,103 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:25,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:25,127 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:25,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:25,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596579626] [2021-03-11 14:34:25,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:25,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:25,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157867174] [2021-03-11 14:34:25,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:25,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:25,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:25,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:25,151 INFO L87 Difference]: Start difference. First operand 341 states and 1094 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:25,207 INFO L93 Difference]: Finished difference Result 658 states and 1820 transitions. [2021-03-11 14:34:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:25,209 INFO L225 Difference]: With dead ends: 658 [2021-03-11 14:34:25,209 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:34:25,209 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:34:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 355. [2021-03-11 14:34:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 3.189265536723164) internal successors, (1129), 354 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1129 transitions. [2021-03-11 14:34:25,216 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1129 transitions. Word has length 19 [2021-03-11 14:34:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:25,216 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 1129 transitions. [2021-03-11 14:34:25,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,216 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1129 transitions. [2021-03-11 14:34:25,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:25,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:25,217 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:25,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-11 14:34:25,217 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:25,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:25,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1874544966, now seen corresponding path program 56 times [2021-03-11 14:34:25,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:25,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271685709] [2021-03-11 14:34:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:25,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:25,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:25,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:25,240 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:25,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:25,252 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:25,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:25,270 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:25,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:25,293 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:25,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:25,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271685709] [2021-03-11 14:34:25,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:25,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:25,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558957918] [2021-03-11 14:34:25,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:25,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:25,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:25,319 INFO L87 Difference]: Start difference. First operand 355 states and 1129 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:25,392 INFO L93 Difference]: Finished difference Result 667 states and 1843 transitions. [2021-03-11 14:34:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:25,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:25,393 INFO L225 Difference]: With dead ends: 667 [2021-03-11 14:34:25,393 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:34:25,393 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:25,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:34:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 347. [2021-03-11 14:34:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.2052023121387285) internal successors, (1109), 346 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1109 transitions. [2021-03-11 14:34:25,401 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1109 transitions. Word has length 19 [2021-03-11 14:34:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:25,401 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 1109 transitions. [2021-03-11 14:34:25,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1109 transitions. [2021-03-11 14:34:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:25,402 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:25,402 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:25,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-11 14:34:25,402 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:25,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1939279986, now seen corresponding path program 57 times [2021-03-11 14:34:25,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:25,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067391864] [2021-03-11 14:34:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:25,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:25,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:25,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:25,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:25,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:25,439 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:25,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:25,469 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:25,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:25,492 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:25,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:25,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067391864] [2021-03-11 14:34:25,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:25,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:25,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442685867] [2021-03-11 14:34:25,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:25,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:25,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:25,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:25,516 INFO L87 Difference]: Start difference. First operand 347 states and 1109 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:25,573 INFO L93 Difference]: Finished difference Result 648 states and 1786 transitions. [2021-03-11 14:34:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:25,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:25,575 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:34:25,575 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:34:25,575 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:34:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 352. [2021-03-11 14:34:25,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 3.185185185185185) internal successors, (1118), 351 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1118 transitions. [2021-03-11 14:34:25,582 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1118 transitions. Word has length 19 [2021-03-11 14:34:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:25,582 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 1118 transitions. [2021-03-11 14:34:25,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,582 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1118 transitions. [2021-03-11 14:34:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:25,583 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:25,583 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:25,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-11 14:34:25,583 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:25,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:25,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1604625216, now seen corresponding path program 58 times [2021-03-11 14:34:25,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:25,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698251977] [2021-03-11 14:34:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:25,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:25,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:25,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:25,613 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:25,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:25,626 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:25,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:25,654 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:25,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:25,677 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:25,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:25,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698251977] [2021-03-11 14:34:25,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:25,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:25,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070909870] [2021-03-11 14:34:25,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:25,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:25,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:25,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:25,701 INFO L87 Difference]: Start difference. First operand 352 states and 1118 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:25,775 INFO L93 Difference]: Finished difference Result 650 states and 1790 transitions. [2021-03-11 14:34:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:25,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:25,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:25,776 INFO L225 Difference]: With dead ends: 650 [2021-03-11 14:34:25,776 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:34:25,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:34:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 347. [2021-03-11 14:34:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.1907514450867054) internal successors, (1104), 346 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1104 transitions. [2021-03-11 14:34:25,782 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1104 transitions. Word has length 19 [2021-03-11 14:34:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:25,782 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 1104 transitions. [2021-03-11 14:34:25,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1104 transitions. [2021-03-11 14:34:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:25,783 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:25,783 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:25,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-11 14:34:25,783 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:25,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash 334504740, now seen corresponding path program 59 times [2021-03-11 14:34:25,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:25,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141196426] [2021-03-11 14:34:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:25,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:25,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:25,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:25,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:25,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:25,816 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:25,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:25,832 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:25,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:25,854 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:25,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:25,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141196426] [2021-03-11 14:34:25,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:25,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:25,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231600144] [2021-03-11 14:34:25,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:25,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:25,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:25,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:25,875 INFO L87 Difference]: Start difference. First operand 347 states and 1104 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:25,947 INFO L93 Difference]: Finished difference Result 670 states and 1858 transitions. [2021-03-11 14:34:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:25,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:25,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:25,948 INFO L225 Difference]: With dead ends: 670 [2021-03-11 14:34:25,948 INFO L226 Difference]: Without dead ends: 630 [2021-03-11 14:34:25,948 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-03-11 14:34:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 356. [2021-03-11 14:34:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.171830985915493) internal successors, (1126), 355 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1126 transitions. [2021-03-11 14:34:25,955 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1126 transitions. Word has length 19 [2021-03-11 14:34:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:25,955 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 1126 transitions. [2021-03-11 14:34:25,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1126 transitions. [2021-03-11 14:34:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:25,956 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:25,956 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:25,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-11 14:34:25,956 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:25,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:25,957 INFO L82 PathProgramCache]: Analyzing trace with hash 333910094, now seen corresponding path program 60 times [2021-03-11 14:34:25,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:25,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2284300] [2021-03-11 14:34:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:25,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:25,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:25,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:25,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:25,978 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:25,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:25,990 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:25,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:26,007 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:26,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:26,026 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:26,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:26,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2284300] [2021-03-11 14:34:26,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:26,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:26,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800246367] [2021-03-11 14:34:26,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:26,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:26,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:26,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:26,045 INFO L87 Difference]: Start difference. First operand 356 states and 1126 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:26,106 INFO L93 Difference]: Finished difference Result 663 states and 1828 transitions. [2021-03-11 14:34:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:26,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:26,107 INFO L225 Difference]: With dead ends: 663 [2021-03-11 14:34:26,107 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:34:26,107 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:26,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:34:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 341. [2021-03-11 14:34:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 3.2058823529411766) internal successors, (1090), 340 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1090 transitions. [2021-03-11 14:34:26,120 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1090 transitions. Word has length 19 [2021-03-11 14:34:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:26,120 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 1090 transitions. [2021-03-11 14:34:26,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1090 transitions. [2021-03-11 14:34:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:26,121 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:26,121 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:26,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-11 14:34:26,121 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:26,122 INFO L82 PathProgramCache]: Analyzing trace with hash -985705328, now seen corresponding path program 61 times [2021-03-11 14:34:26,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:26,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510168924] [2021-03-11 14:34:26,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:26,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:26,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:26,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:26,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:26,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:26,166 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:26,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:26,192 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:26,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:26,213 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:26,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:26,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510168924] [2021-03-11 14:34:26,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:26,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:26,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70727451] [2021-03-11 14:34:26,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:26,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:26,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:26,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:26,234 INFO L87 Difference]: Start difference. First operand 341 states and 1090 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:26,289 INFO L93 Difference]: Finished difference Result 620 states and 1696 transitions. [2021-03-11 14:34:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:26,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:26,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:26,290 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:34:26,290 INFO L226 Difference]: Without dead ends: 589 [2021-03-11 14:34:26,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-03-11 14:34:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 347. [2021-03-11 14:34:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.1907514450867054) internal successors, (1104), 346 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1104 transitions. [2021-03-11 14:34:26,298 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1104 transitions. Word has length 19 [2021-03-11 14:34:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:26,298 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 1104 transitions. [2021-03-11 14:34:26,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1104 transitions. [2021-03-11 14:34:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:26,299 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:26,299 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:26,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-11 14:34:26,299 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:26,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1157535422, now seen corresponding path program 62 times [2021-03-11 14:34:26,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:26,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414653040] [2021-03-11 14:34:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:26,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:26,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:26,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:26,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:26,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:26,346 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:26,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:26,374 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:26,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:26,399 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:26,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:26,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414653040] [2021-03-11 14:34:26,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:26,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:26,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181129013] [2021-03-11 14:34:26,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:26,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:26,423 INFO L87 Difference]: Start difference. First operand 347 states and 1104 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:26,501 INFO L93 Difference]: Finished difference Result 619 states and 1692 transitions. [2021-03-11 14:34:26,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:26,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:26,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:26,502 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:34:26,503 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:34:26,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:34:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 344. [2021-03-11 14:34:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 3.198250728862974) internal successors, (1097), 343 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1097 transitions. [2021-03-11 14:34:26,510 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1097 transitions. Word has length 19 [2021-03-11 14:34:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:26,510 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 1097 transitions. [2021-03-11 14:34:26,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1097 transitions. [2021-03-11 14:34:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:26,511 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:26,511 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:26,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-11 14:34:26,511 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash 108386260, now seen corresponding path program 63 times [2021-03-11 14:34:26,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:26,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021649659] [2021-03-11 14:34:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:26,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:26,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:26,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:26,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:26,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:26,554 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:26,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:26,582 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:26,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:26,607 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:26,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:26,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021649659] [2021-03-11 14:34:26,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:26,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:26,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838896607] [2021-03-11 14:34:26,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:26,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:26,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:26,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:26,631 INFO L87 Difference]: Start difference. First operand 344 states and 1097 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:26,689 INFO L93 Difference]: Finished difference Result 625 states and 1710 transitions. [2021-03-11 14:34:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:26,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:26,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:26,690 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:34:26,690 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:34:26,691 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:26,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:34:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 349. [2021-03-11 14:34:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.17816091954023) internal successors, (1106), 348 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1106 transitions. [2021-03-11 14:34:26,697 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1106 transitions. Word has length 19 [2021-03-11 14:34:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:26,697 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 1106 transitions. [2021-03-11 14:34:26,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1106 transitions. [2021-03-11 14:34:26,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:26,698 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:26,698 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:26,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-11 14:34:26,698 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:26,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:26,699 INFO L82 PathProgramCache]: Analyzing trace with hash -642675834, now seen corresponding path program 64 times [2021-03-11 14:34:26,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:26,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210900052] [2021-03-11 14:34:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:26,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:26,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:26,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:26,728 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:26,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:26,749 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:26,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:26,779 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:26,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:26,802 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:26,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:26,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210900052] [2021-03-11 14:34:26,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:26,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:26,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743686987] [2021-03-11 14:34:26,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:26,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:26,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:26,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:26,826 INFO L87 Difference]: Start difference. First operand 349 states and 1106 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:26,905 INFO L93 Difference]: Finished difference Result 627 states and 1714 transitions. [2021-03-11 14:34:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:26,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:26,907 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:34:26,907 INFO L226 Difference]: Without dead ends: 589 [2021-03-11 14:34:26,907 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 142.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-03-11 14:34:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 344. [2021-03-11 14:34:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 3.1895043731778427) internal successors, (1094), 343 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1094 transitions. [2021-03-11 14:34:26,914 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1094 transitions. Word has length 19 [2021-03-11 14:34:26,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:26,914 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 1094 transitions. [2021-03-11 14:34:26,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1094 transitions. [2021-03-11 14:34:26,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:26,915 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:26,915 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:26,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-11 14:34:26,915 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:26,916 INFO L82 PathProgramCache]: Analyzing trace with hash 517971322, now seen corresponding path program 65 times [2021-03-11 14:34:26,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:26,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699622456] [2021-03-11 14:34:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:26,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:26,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:26,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:26,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:26,943 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:26,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:26,963 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:26,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:26,980 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:26,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:27,003 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:27,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:27,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699622456] [2021-03-11 14:34:27,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:27,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:27,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439043472] [2021-03-11 14:34:27,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:27,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:27,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:27,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:27,027 INFO L87 Difference]: Start difference. First operand 344 states and 1094 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:27,110 INFO L93 Difference]: Finished difference Result 622 states and 1703 transitions. [2021-03-11 14:34:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:27,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:27,111 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:34:27,111 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:34:27,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:34:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 348. [2021-03-11 14:34:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 3.175792507204611) internal successors, (1102), 347 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1102 transitions. [2021-03-11 14:34:27,118 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1102 transitions. Word has length 19 [2021-03-11 14:34:27,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:27,118 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 1102 transitions. [2021-03-11 14:34:27,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,118 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1102 transitions. [2021-03-11 14:34:27,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:27,119 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:27,119 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:27,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-11 14:34:27,119 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:27,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:27,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2066382666, now seen corresponding path program 66 times [2021-03-11 14:34:27,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:27,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537604228] [2021-03-11 14:34:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:27,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:27,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:27,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:27,140 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:27,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:27,157 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:27,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:27,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:27,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:27,188 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:27,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:27,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537604228] [2021-03-11 14:34:27,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:27,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:27,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632474779] [2021-03-11 14:34:27,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:27,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:27,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:27,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:27,206 INFO L87 Difference]: Start difference. First operand 348 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:27,270 INFO L93 Difference]: Finished difference Result 625 states and 1709 transitions. [2021-03-11 14:34:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:27,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:27,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:27,271 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:34:27,271 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:34:27,271 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:27,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:34:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 341. [2021-03-11 14:34:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 3.197058823529412) internal successors, (1087), 340 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1087 transitions. [2021-03-11 14:34:27,277 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1087 transitions. Word has length 19 [2021-03-11 14:34:27,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:27,277 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 1087 transitions. [2021-03-11 14:34:27,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1087 transitions. [2021-03-11 14:34:27,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:27,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:27,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:27,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-11 14:34:27,278 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1775607780, now seen corresponding path program 67 times [2021-03-11 14:34:27,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:27,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331184502] [2021-03-11 14:34:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:27,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:27,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:27,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:27,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:27,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:27,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:27,337 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:27,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:27,360 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:27,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:27,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331184502] [2021-03-11 14:34:27,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:27,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:27,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382293771] [2021-03-11 14:34:27,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:27,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:27,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:27,383 INFO L87 Difference]: Start difference. First operand 341 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:27,460 INFO L93 Difference]: Finished difference Result 658 states and 1828 transitions. [2021-03-11 14:34:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:27,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:27,461 INFO L225 Difference]: With dead ends: 658 [2021-03-11 14:34:27,462 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:34:27,462 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:34:27,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 351. [2021-03-11 14:34:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 3.1857142857142855) internal successors, (1115), 350 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1115 transitions. [2021-03-11 14:34:27,469 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1115 transitions. Word has length 19 [2021-03-11 14:34:27,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:27,469 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 1115 transitions. [2021-03-11 14:34:27,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1115 transitions. [2021-03-11 14:34:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:27,470 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:27,470 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:27,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-11 14:34:27,470 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:27,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1645024190, now seen corresponding path program 68 times [2021-03-11 14:34:27,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:27,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481652123] [2021-03-11 14:34:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:27,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:27,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:27,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:27,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:27,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:27,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:27,532 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:27,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:27,554 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:27,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:27,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481652123] [2021-03-11 14:34:27,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:27,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:27,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804981303] [2021-03-11 14:34:27,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:27,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:27,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:27,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:27,574 INFO L87 Difference]: Start difference. First operand 351 states and 1115 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:27,630 INFO L93 Difference]: Finished difference Result 648 states and 1791 transitions. [2021-03-11 14:34:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:27,631 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:34:27,631 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:34:27,631 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:27,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:34:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 345. [2021-03-11 14:34:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.1947674418604652) internal successors, (1099), 344 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1099 transitions. [2021-03-11 14:34:27,637 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1099 transitions. Word has length 19 [2021-03-11 14:34:27,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:27,637 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1099 transitions. [2021-03-11 14:34:27,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,637 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1099 transitions. [2021-03-11 14:34:27,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:27,638 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:27,638 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:27,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-11 14:34:27,638 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:27,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:27,638 INFO L82 PathProgramCache]: Analyzing trace with hash -286202784, now seen corresponding path program 69 times [2021-03-11 14:34:27,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:27,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975289448] [2021-03-11 14:34:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:27,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:27,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:27,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:27,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:27,667 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:27,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:27,681 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:27,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:27,699 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:27,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:27,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975289448] [2021-03-11 14:34:27,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:27,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:27,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599265569] [2021-03-11 14:34:27,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:27,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:27,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:27,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:27,718 INFO L87 Difference]: Start difference. First operand 345 states and 1099 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:27,785 INFO L93 Difference]: Finished difference Result 664 states and 1847 transitions. [2021-03-11 14:34:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:27,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:27,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:27,786 INFO L225 Difference]: With dead ends: 664 [2021-03-11 14:34:27,786 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:34:27,786 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:27,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:34:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 354. [2021-03-11 14:34:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 3.1756373937677056) internal successors, (1121), 353 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1121 transitions. [2021-03-11 14:34:27,791 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1121 transitions. Word has length 19 [2021-03-11 14:34:27,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:27,791 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 1121 transitions. [2021-03-11 14:34:27,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,791 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1121 transitions. [2021-03-11 14:34:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:27,792 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:27,792 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:27,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-11 14:34:27,792 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:27,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:27,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1031499928, now seen corresponding path program 70 times [2021-03-11 14:34:27,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:27,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11066112] [2021-03-11 14:34:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:27,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:27,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:27,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:27,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:27,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:27,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:27,841 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:27,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:27,862 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:27,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:27,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11066112] [2021-03-11 14:34:27,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:27,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:27,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736540197] [2021-03-11 14:34:27,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:27,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:27,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:27,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:27,884 INFO L87 Difference]: Start difference. First operand 354 states and 1121 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:27,953 INFO L93 Difference]: Finished difference Result 657 states and 1817 transitions. [2021-03-11 14:34:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:27,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:27,954 INFO L225 Difference]: With dead ends: 657 [2021-03-11 14:34:27,954 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:34:27,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:27,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:34:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 345. [2021-03-11 14:34:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.183139534883721) internal successors, (1095), 344 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1095 transitions. [2021-03-11 14:34:27,959 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1095 transitions. Word has length 19 [2021-03-11 14:34:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:27,960 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1095 transitions. [2021-03-11 14:34:27,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1095 transitions. [2021-03-11 14:34:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:27,960 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:27,960 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:27,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-11 14:34:27,961 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:27,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1073569384, now seen corresponding path program 71 times [2021-03-11 14:34:27,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:27,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941572881] [2021-03-11 14:34:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:27,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:27,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:27,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:27,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:27,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:27,995 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:27,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:28,011 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:28,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:28,032 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:28,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:28,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941572881] [2021-03-11 14:34:28,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:28,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:28,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821442866] [2021-03-11 14:34:28,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:28,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:28,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:28,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:28,050 INFO L87 Difference]: Start difference. First operand 345 states and 1095 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:28,105 INFO L93 Difference]: Finished difference Result 639 states and 1762 transitions. [2021-03-11 14:34:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:28,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:28,106 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:34:28,106 INFO L226 Difference]: Without dead ends: 609 [2021-03-11 14:34:28,106 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-03-11 14:34:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 349. [2021-03-11 14:34:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.1695402298850577) internal successors, (1103), 348 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1103 transitions. [2021-03-11 14:34:28,111 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1103 transitions. Word has length 19 [2021-03-11 14:34:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:28,111 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 1103 transitions. [2021-03-11 14:34:28,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1103 transitions. [2021-03-11 14:34:28,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:28,112 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:28,112 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:28,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-11 14:34:28,112 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:28,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1510784604, now seen corresponding path program 72 times [2021-03-11 14:34:28,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:28,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548268951] [2021-03-11 14:34:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:28,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:28,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:28,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:28,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:28,143 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:28,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:28,163 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:28,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:28,185 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:28,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:28,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548268951] [2021-03-11 14:34:28,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:28,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:28,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57419228] [2021-03-11 14:34:28,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:28,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:28,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:28,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:28,206 INFO L87 Difference]: Start difference. First operand 349 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:28,271 INFO L93 Difference]: Finished difference Result 642 states and 1768 transitions. [2021-03-11 14:34:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:28,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:28,272 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:34:28,272 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:34:28,273 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:28,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:34:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 337. [2021-03-11 14:34:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 3.2083333333333335) internal successors, (1078), 336 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 1078 transitions. [2021-03-11 14:34:28,278 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 1078 transitions. Word has length 19 [2021-03-11 14:34:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:28,278 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 1078 transitions. [2021-03-11 14:34:28,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,278 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 1078 transitions. [2021-03-11 14:34:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:28,279 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:28,279 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:28,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-11 14:34:28,279 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:28,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:28,279 INFO L82 PathProgramCache]: Analyzing trace with hash 458482122, now seen corresponding path program 73 times [2021-03-11 14:34:28,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:28,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988876966] [2021-03-11 14:34:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:28,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:28,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:28,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:28,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:28,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:28,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:28,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:28,350 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:28,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:28,372 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:28,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:28,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988876966] [2021-03-11 14:34:28,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:28,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:28,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847127157] [2021-03-11 14:34:28,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:28,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:28,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:28,394 INFO L87 Difference]: Start difference. First operand 337 states and 1078 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:28,453 INFO L93 Difference]: Finished difference Result 609 states and 1671 transitions. [2021-03-11 14:34:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:28,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:28,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:28,454 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:34:28,454 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:34:28,455 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:28,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:34:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 346. [2021-03-11 14:34:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.2028985507246377) internal successors, (1105), 345 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1105 transitions. [2021-03-11 14:34:28,461 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1105 transitions. Word has length 19 [2021-03-11 14:34:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:28,462 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 1105 transitions. [2021-03-11 14:34:28,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1105 transitions. [2021-03-11 14:34:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:28,462 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:28,462 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:28,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-11 14:34:28,463 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1693244424, now seen corresponding path program 74 times [2021-03-11 14:34:28,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:28,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504966413] [2021-03-11 14:34:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:28,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:28,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:28,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:28,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:28,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:28,506 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:28,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:28,536 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:28,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:28,567 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:28,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:28,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504966413] [2021-03-11 14:34:28,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:28,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:28,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154354279] [2021-03-11 14:34:28,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:28,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:28,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:28,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:28,590 INFO L87 Difference]: Start difference. First operand 346 states and 1105 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:28,660 INFO L93 Difference]: Finished difference Result 608 states and 1667 transitions. [2021-03-11 14:34:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:28,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:28,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:28,662 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:34:28,662 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:34:28,662 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 146.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:34:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 343. [2021-03-11 14:34:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.210526315789474) internal successors, (1098), 342 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1098 transitions. [2021-03-11 14:34:28,668 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1098 transitions. Word has length 19 [2021-03-11 14:34:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:28,669 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 1098 transitions. [2021-03-11 14:34:28,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1098 transitions. [2021-03-11 14:34:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:28,669 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:28,670 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:28,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-11 14:34:28,670 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:28,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1552573710, now seen corresponding path program 75 times [2021-03-11 14:34:28,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:28,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826663070] [2021-03-11 14:34:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:28,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:28,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:28,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:28,691 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:28,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:28,712 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:28,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:28,741 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:28,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:28,760 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:28,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:28,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826663070] [2021-03-11 14:34:28,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:28,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:28,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455064437] [2021-03-11 14:34:28,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:28,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:28,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:28,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:28,782 INFO L87 Difference]: Start difference. First operand 343 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:28,831 INFO L93 Difference]: Finished difference Result 614 states and 1685 transitions. [2021-03-11 14:34:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:28,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:28,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:28,832 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:34:28,832 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:34:28,832 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:28,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:34:28,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 348. [2021-03-11 14:34:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 3.190201729106628) internal successors, (1107), 347 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1107 transitions. [2021-03-11 14:34:28,839 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1107 transitions. Word has length 19 [2021-03-11 14:34:28,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:28,839 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 1107 transitions. [2021-03-11 14:34:28,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:28,839 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1107 transitions. [2021-03-11 14:34:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:28,840 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:28,840 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:28,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-11 14:34:28,840 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:28,840 INFO L82 PathProgramCache]: Analyzing trace with hash 801511616, now seen corresponding path program 76 times [2021-03-11 14:34:28,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:28,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306499622] [2021-03-11 14:34:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:28,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:28,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:28,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:28,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:28,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:28,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:28,885 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:28,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:28,911 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:28,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:28,932 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:28,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:28,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306499622] [2021-03-11 14:34:28,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:28,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:28,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711436374] [2021-03-11 14:34:28,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:28,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:28,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:28,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:28,951 INFO L87 Difference]: Start difference. First operand 348 states and 1107 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:29,011 INFO L93 Difference]: Finished difference Result 616 states and 1689 transitions. [2021-03-11 14:34:29,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:29,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:29,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:29,012 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:34:29,012 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:34:29,012 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:34:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 343. [2021-03-11 14:34:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.2017543859649122) internal successors, (1095), 342 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1095 transitions. [2021-03-11 14:34:29,017 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1095 transitions. Word has length 19 [2021-03-11 14:34:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:29,017 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 1095 transitions. [2021-03-11 14:34:29,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1095 transitions. [2021-03-11 14:34:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:29,018 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:29,018 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:29,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-11 14:34:29,018 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:29,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:29,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1962158772, now seen corresponding path program 77 times [2021-03-11 14:34:29,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:29,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310277258] [2021-03-11 14:34:29,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:29,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:29,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:29,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:29,039 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:29,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:29,059 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:29,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:29,075 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:29,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:29,097 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:29,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:29,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310277258] [2021-03-11 14:34:29,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:29,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:29,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775696062] [2021-03-11 14:34:29,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:29,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:29,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:29,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:29,117 INFO L87 Difference]: Start difference. First operand 343 states and 1095 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:29,175 INFO L93 Difference]: Finished difference Result 611 states and 1678 transitions. [2021-03-11 14:34:29,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:29,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:29,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:29,176 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:34:29,176 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:34:29,176 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:34:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 347. [2021-03-11 14:34:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.1878612716763004) internal successors, (1103), 346 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1103 transitions. [2021-03-11 14:34:29,181 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1103 transitions. Word has length 19 [2021-03-11 14:34:29,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:29,181 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 1103 transitions. [2021-03-11 14:34:29,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,181 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1103 transitions. [2021-03-11 14:34:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:29,181 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:29,181 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:29,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-11 14:34:29,182 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:29,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:29,182 INFO L82 PathProgramCache]: Analyzing trace with hash -622195216, now seen corresponding path program 78 times [2021-03-11 14:34:29,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:29,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971005348] [2021-03-11 14:34:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:29,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:29,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:29,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:29,205 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:29,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:29,225 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:29,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:29,241 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:29,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:29,263 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:29,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:29,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971005348] [2021-03-11 14:34:29,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:29,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:29,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125469566] [2021-03-11 14:34:29,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:29,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:29,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:29,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:29,285 INFO L87 Difference]: Start difference. First operand 347 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:29,360 INFO L93 Difference]: Finished difference Result 614 states and 1684 transitions. [2021-03-11 14:34:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:29,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:29,362 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:34:29,362 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:34:29,362 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:34:29,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 340. [2021-03-11 14:34:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.2094395280235988) internal successors, (1088), 339 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1088 transitions. [2021-03-11 14:34:29,367 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1088 transitions. Word has length 19 [2021-03-11 14:34:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:29,367 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 1088 transitions. [2021-03-11 14:34:29,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1088 transitions. [2021-03-11 14:34:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:29,368 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:29,368 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:29,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-11 14:34:29,368 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:29,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1910451096, now seen corresponding path program 79 times [2021-03-11 14:34:29,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:29,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657102395] [2021-03-11 14:34:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:29,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:29,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:29,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:29,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:29,407 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:29,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:29,437 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:29,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:29,461 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:29,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:29,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657102395] [2021-03-11 14:34:29,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:29,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:29,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771933776] [2021-03-11 14:34:29,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:29,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:29,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:29,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:29,484 INFO L87 Difference]: Start difference. First operand 340 states and 1088 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:29,551 INFO L93 Difference]: Finished difference Result 614 states and 1683 transitions. [2021-03-11 14:34:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:29,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:29,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:29,553 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:34:29,553 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:34:29,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:34:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 346. [2021-03-11 14:34:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.1942028985507247) internal successors, (1102), 345 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1102 transitions. [2021-03-11 14:34:29,560 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1102 transitions. Word has length 19 [2021-03-11 14:34:29,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:29,560 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 1102 transitions. [2021-03-11 14:34:29,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1102 transitions. [2021-03-11 14:34:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:29,560 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:29,561 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:29,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-11 14:34:29,561 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:29,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:29,561 INFO L82 PathProgramCache]: Analyzing trace with hash 232789654, now seen corresponding path program 80 times [2021-03-11 14:34:29,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:29,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594141479] [2021-03-11 14:34:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:29,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:29,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:29,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:29,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:29,594 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:29,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:29,625 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:29,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:29,648 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:29,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:29,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594141479] [2021-03-11 14:34:29,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:29,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:29,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490004676] [2021-03-11 14:34:29,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:29,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:29,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:29,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:29,670 INFO L87 Difference]: Start difference. First operand 346 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:29,742 INFO L93 Difference]: Finished difference Result 613 states and 1679 transitions. [2021-03-11 14:34:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:29,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:29,744 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:34:29,744 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:34:29,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:34:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 343. [2021-03-11 14:34:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.2017543859649122) internal successors, (1095), 342 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1095 transitions. [2021-03-11 14:34:29,751 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1095 transitions. Word has length 19 [2021-03-11 14:34:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:29,751 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 1095 transitions. [2021-03-11 14:34:29,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1095 transitions. [2021-03-11 14:34:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:29,752 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:29,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:29,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-11 14:34:29,752 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:29,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1878169934, now seen corresponding path program 81 times [2021-03-11 14:34:29,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:29,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408446041] [2021-03-11 14:34:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:29,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:29,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:29,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:29,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:29,792 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:29,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:29,808 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:29,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:29,835 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:29,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:29,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408446041] [2021-03-11 14:34:29,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:29,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:29,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647002331] [2021-03-11 14:34:29,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:29,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:29,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:29,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:29,859 INFO L87 Difference]: Start difference. First operand 343 states and 1095 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:29,921 INFO L93 Difference]: Finished difference Result 623 states and 1709 transitions. [2021-03-11 14:34:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:29,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:29,922 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:34:29,922 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:34:29,922 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:34:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 349. [2021-03-11 14:34:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.17816091954023) internal successors, (1106), 348 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1106 transitions. [2021-03-11 14:34:29,929 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1106 transitions. Word has length 19 [2021-03-11 14:34:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:29,929 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 1106 transitions. [2021-03-11 14:34:29,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1106 transitions. [2021-03-11 14:34:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:29,930 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:29,930 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:29,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-11 14:34:29,930 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:29,931 INFO L82 PathProgramCache]: Analyzing trace with hash 901965184, now seen corresponding path program 82 times [2021-03-11 14:34:29,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:29,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216256953] [2021-03-11 14:34:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:29,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:29,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:29,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:29,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:29,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:29,965 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:29,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:29,982 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:29,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:30,005 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:30,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:30,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216256953] [2021-03-11 14:34:30,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:30,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:30,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506040158] [2021-03-11 14:34:30,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:30,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:30,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:30,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:30,029 INFO L87 Difference]: Start difference. First operand 349 states and 1106 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:30,108 INFO L93 Difference]: Finished difference Result 628 states and 1721 transitions. [2021-03-11 14:34:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:30,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:30,110 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:34:30,110 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:34:30,110 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:34:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 343. [2021-03-11 14:34:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.192982456140351) internal successors, (1092), 342 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1092 transitions. [2021-03-11 14:34:30,118 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1092 transitions. Word has length 19 [2021-03-11 14:34:30,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:30,118 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 1092 transitions. [2021-03-11 14:34:30,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,119 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1092 transitions. [2021-03-11 14:34:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:30,119 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:30,120 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:30,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-11 14:34:30,120 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:30,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:30,120 INFO L82 PathProgramCache]: Analyzing trace with hash 348431156, now seen corresponding path program 83 times [2021-03-11 14:34:30,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:30,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777458625] [2021-03-11 14:34:30,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:30,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:30,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:30,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:30,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:30,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:30,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:30,172 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:30,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:30,195 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:30,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:30,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777458625] [2021-03-11 14:34:30,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:30,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:30,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749563947] [2021-03-11 14:34:30,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:30,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:30,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:30,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:30,214 INFO L87 Difference]: Start difference. First operand 343 states and 1092 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:30,280 INFO L93 Difference]: Finished difference Result 620 states and 1702 transitions. [2021-03-11 14:34:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:30,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:30,281 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:34:30,281 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:34:30,281 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:34:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 348. [2021-03-11 14:34:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 3.175792507204611) internal successors, (1102), 347 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1102 transitions. [2021-03-11 14:34:30,287 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1102 transitions. Word has length 19 [2021-03-11 14:34:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:30,287 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 1102 transitions. [2021-03-11 14:34:30,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1102 transitions. [2021-03-11 14:34:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:30,288 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:30,288 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:30,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-11 14:34:30,288 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:30,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:30,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1380616178, now seen corresponding path program 84 times [2021-03-11 14:34:30,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:30,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323196218] [2021-03-11 14:34:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:30,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:30,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:30,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:30,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:30,316 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:30,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:30,330 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:30,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:30,348 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:30,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:30,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323196218] [2021-03-11 14:34:30,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:30,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:30,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119771100] [2021-03-11 14:34:30,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:30,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:30,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:30,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:30,366 INFO L87 Difference]: Start difference. First operand 348 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:30,424 INFO L93 Difference]: Finished difference Result 626 states and 1716 transitions. [2021-03-11 14:34:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:30,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:30,425 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:34:30,425 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:34:30,425 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:34:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 340. [2021-03-11 14:34:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.200589970501475) internal successors, (1085), 339 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1085 transitions. [2021-03-11 14:34:30,432 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1085 transitions. Word has length 19 [2021-03-11 14:34:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:30,432 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 1085 transitions. [2021-03-11 14:34:30,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1085 transitions. [2021-03-11 14:34:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:30,433 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:30,433 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:30,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-11 14:34:30,433 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:30,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1259258648, now seen corresponding path program 85 times [2021-03-11 14:34:30,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:30,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630417043] [2021-03-11 14:34:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:30,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:30,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:30,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:30,454 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:30,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:30,465 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:30,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:30,494 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:30,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:30,516 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:30,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:30,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630417043] [2021-03-11 14:34:30,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:30,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:30,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682000032] [2021-03-11 14:34:30,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:30,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:30,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:30,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:30,538 INFO L87 Difference]: Start difference. First operand 340 states and 1085 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:30,591 INFO L93 Difference]: Finished difference Result 629 states and 1736 transitions. [2021-03-11 14:34:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:30,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:30,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:30,593 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:34:30,593 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:34:30,593 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:30,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:34:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 350. [2021-03-11 14:34:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 3.189111747851003) internal successors, (1113), 349 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1113 transitions. [2021-03-11 14:34:30,599 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1113 transitions. Word has length 19 [2021-03-11 14:34:30,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:30,599 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 1113 transitions. [2021-03-11 14:34:30,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1113 transitions. [2021-03-11 14:34:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:30,600 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:30,600 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:30,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-11 14:34:30,600 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:30,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:30,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2010320742, now seen corresponding path program 86 times [2021-03-11 14:34:30,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:30,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979554226] [2021-03-11 14:34:30,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:30,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:30,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:30,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:30,620 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:30,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:30,631 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:30,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:30,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:30,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:30,680 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:30,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:30,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979554226] [2021-03-11 14:34:30,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:30,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:30,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196465417] [2021-03-11 14:34:30,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:30,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:30,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:30,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:30,701 INFO L87 Difference]: Start difference. First operand 350 states and 1113 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:30,765 INFO L93 Difference]: Finished difference Result 631 states and 1740 transitions. [2021-03-11 14:34:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:30,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:30,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:30,766 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:34:30,766 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:34:30,767 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:34:30,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 345. [2021-03-11 14:34:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.1947674418604652) internal successors, (1099), 344 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1099 transitions. [2021-03-11 14:34:30,774 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1099 transitions. Word has length 19 [2021-03-11 14:34:30,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:30,774 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1099 transitions. [2021-03-11 14:34:30,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1099 transitions. [2021-03-11 14:34:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:30,774 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:30,775 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:30,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-11 14:34:30,775 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:30,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:30,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1435270794, now seen corresponding path program 87 times [2021-03-11 14:34:30,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:30,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618578945] [2021-03-11 14:34:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:30,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:30,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:30,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:30,798 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:30,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:30,810 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:30,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:30,825 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:30,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:30,846 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:30,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:30,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618578945] [2021-03-11 14:34:30,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:30,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:30,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415008112] [2021-03-11 14:34:30,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:30,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:30,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:30,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:30,867 INFO L87 Difference]: Start difference. First operand 345 states and 1099 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:30,919 INFO L93 Difference]: Finished difference Result 633 states and 1743 transitions. [2021-03-11 14:34:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:30,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:30,921 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:34:30,921 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:34:30,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:30,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:34:30,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 351. [2021-03-11 14:34:30,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 3.1714285714285713) internal successors, (1110), 350 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1110 transitions. [2021-03-11 14:34:30,927 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1110 transitions. Word has length 19 [2021-03-11 14:34:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:30,927 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 1110 transitions. [2021-03-11 14:34:30,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1110 transitions. [2021-03-11 14:34:30,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:30,928 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:30,928 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:30,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-11 14:34:30,928 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:30,929 INFO L82 PathProgramCache]: Analyzing trace with hash 459066044, now seen corresponding path program 88 times [2021-03-11 14:34:30,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:30,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009539327] [2021-03-11 14:34:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:30,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:30,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:30,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:30,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:30,949 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:30,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:30,961 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:30,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:30,981 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:30,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:31,003 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:31,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:31,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009539327] [2021-03-11 14:34:31,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:31,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:31,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364513208] [2021-03-11 14:34:31,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:31,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:31,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:31,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:31,025 INFO L87 Difference]: Start difference. First operand 351 states and 1110 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:31,100 INFO L93 Difference]: Finished difference Result 638 states and 1755 transitions. [2021-03-11 14:34:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:31,101 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:34:31,101 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:34:31,102 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:34:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 345. [2021-03-11 14:34:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.1802325581395348) internal successors, (1094), 344 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1094 transitions. [2021-03-11 14:34:31,108 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1094 transitions. Word has length 19 [2021-03-11 14:34:31,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:31,108 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1094 transitions. [2021-03-11 14:34:31,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,109 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1094 transitions. [2021-03-11 14:34:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:31,109 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:31,109 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:31,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-11 14:34:31,109 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:31,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:31,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2087070376, now seen corresponding path program 89 times [2021-03-11 14:34:31,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:31,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787875214] [2021-03-11 14:34:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:31,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:31,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:31,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:31,130 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:31,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:31,142 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:31,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:31,158 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:31,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:31,180 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:31,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:31,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787875214] [2021-03-11 14:34:31,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:31,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:31,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520226700] [2021-03-11 14:34:31,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:31,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:31,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:31,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:31,202 INFO L87 Difference]: Start difference. First operand 345 states and 1094 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:31,264 INFO L93 Difference]: Finished difference Result 639 states and 1767 transitions. [2021-03-11 14:34:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:31,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:31,265 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:34:31,265 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:34:31,265 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:34:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 353. [2021-03-11 14:34:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.164772727272727) internal successors, (1114), 352 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1114 transitions. [2021-03-11 14:34:31,271 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1114 transitions. Word has length 19 [2021-03-11 14:34:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:31,271 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 1114 transitions. [2021-03-11 14:34:31,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1114 transitions. [2021-03-11 14:34:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:31,272 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:31,272 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:31,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-11 14:34:31,272 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:31,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1349022390, now seen corresponding path program 90 times [2021-03-11 14:34:31,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:31,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400468482] [2021-03-11 14:34:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:31,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:31,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:31,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:31,294 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:31,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:31,306 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:31,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:31,321 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:31,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:31,348 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:31,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:31,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400468482] [2021-03-11 14:34:31,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:31,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:31,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700454855] [2021-03-11 14:34:31,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:31,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:31,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:31,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:31,371 INFO L87 Difference]: Start difference. First operand 353 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:31,447 INFO L93 Difference]: Finished difference Result 642 states and 1768 transitions. [2021-03-11 14:34:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:31,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:31,448 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:34:31,448 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:34:31,449 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:34:31,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 340. [2021-03-11 14:34:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.191740412979351) internal successors, (1082), 339 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1082 transitions. [2021-03-11 14:34:31,455 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1082 transitions. Word has length 19 [2021-03-11 14:34:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:31,455 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 1082 transitions. [2021-03-11 14:34:31,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1082 transitions. [2021-03-11 14:34:31,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:31,456 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:31,456 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:31,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-11 14:34:31,456 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:31,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1252078038, now seen corresponding path program 91 times [2021-03-11 14:34:31,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:31,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431043077] [2021-03-11 14:34:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:31,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:31,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:31,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:31,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:31,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:31,489 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:31,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:31,505 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:31,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:31,528 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:31,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:31,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431043077] [2021-03-11 14:34:31,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:31,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:31,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468657727] [2021-03-11 14:34:31,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:31,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:31,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:31,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:31,551 INFO L87 Difference]: Start difference. First operand 340 states and 1082 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:31,629 INFO L93 Difference]: Finished difference Result 622 states and 1721 transitions. [2021-03-11 14:34:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:31,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:31,631 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:34:31,631 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:34:31,631 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:31,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:34:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 348. [2021-03-11 14:34:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 3.1873198847262247) internal successors, (1106), 347 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1106 transitions. [2021-03-11 14:34:31,637 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1106 transitions. Word has length 19 [2021-03-11 14:34:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:31,638 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 1106 transitions. [2021-03-11 14:34:31,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1106 transitions. [2021-03-11 14:34:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:31,638 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:31,638 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:31,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-11 14:34:31,639 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:31,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:31,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1332275950, now seen corresponding path program 92 times [2021-03-11 14:34:31,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:31,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075119710] [2021-03-11 14:34:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:31,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:31,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:31,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:31,660 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:31,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:31,672 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:31,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:31,690 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:31,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:31,713 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:31,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:31,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075119710] [2021-03-11 14:34:31,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:31,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:31,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945894007] [2021-03-11 14:34:31,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:31,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:31,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:31,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:31,738 INFO L87 Difference]: Start difference. First operand 348 states and 1106 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:31,817 INFO L93 Difference]: Finished difference Result 625 states and 1727 transitions. [2021-03-11 14:34:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:31,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:31,818 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:34:31,818 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:34:31,818 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:34:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 344. [2021-03-11 14:34:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 3.1895043731778427) internal successors, (1094), 343 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1094 transitions. [2021-03-11 14:34:31,825 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1094 transitions. Word has length 19 [2021-03-11 14:34:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:31,825 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 1094 transitions. [2021-03-11 14:34:31,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1094 transitions. [2021-03-11 14:34:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:31,829 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:31,829 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:31,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-11 14:34:31,829 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:31,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1996780536, now seen corresponding path program 93 times [2021-03-11 14:34:31,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:31,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9682574] [2021-03-11 14:34:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:31,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:31,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:31,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:31,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:31,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:31,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:31,867 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:31,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:31,884 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:31,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:31,907 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:31,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:31,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9682574] [2021-03-11 14:34:31,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:31,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:31,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280638349] [2021-03-11 14:34:31,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:31,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:31,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:31,931 INFO L87 Difference]: Start difference. First operand 344 states and 1094 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:32,008 INFO L93 Difference]: Finished difference Result 626 states and 1729 transitions. [2021-03-11 14:34:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:32,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:32,010 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:34:32,010 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:34:32,010 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:34:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 349. [2021-03-11 14:34:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.1724137931034484) internal successors, (1104), 348 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1104 transitions. [2021-03-11 14:34:32,017 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1104 transitions. Word has length 19 [2021-03-11 14:34:32,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:32,017 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 1104 transitions. [2021-03-11 14:34:32,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1104 transitions. [2021-03-11 14:34:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:32,018 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:32,018 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:32,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-11 14:34:32,018 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:32,018 INFO L82 PathProgramCache]: Analyzing trace with hash 267733202, now seen corresponding path program 94 times [2021-03-11 14:34:32,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:32,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860803496] [2021-03-11 14:34:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:32,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:32,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:32,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:32,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:32,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:32,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:32,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:32,071 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:32,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:32,090 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:32,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:32,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860803496] [2021-03-11 14:34:32,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:32,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:32,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940606595] [2021-03-11 14:34:32,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:32,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:32,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:32,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:32,108 INFO L87 Difference]: Start difference. First operand 349 states and 1104 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:32,167 INFO L93 Difference]: Finished difference Result 632 states and 1743 transitions. [2021-03-11 14:34:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:32,168 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:34:32,168 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:34:32,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:32,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:34:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 344. [2021-03-11 14:34:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 3.1778425655976674) internal successors, (1090), 343 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1090 transitions. [2021-03-11 14:34:32,173 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1090 transitions. Word has length 19 [2021-03-11 14:34:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:32,173 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 1090 transitions. [2021-03-11 14:34:32,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1090 transitions. [2021-03-11 14:34:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:32,174 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:32,174 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:32,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-11 14:34:32,174 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash 901831544, now seen corresponding path program 95 times [2021-03-11 14:34:32,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:32,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117275070] [2021-03-11 14:34:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:32,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:32,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:32,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:32,194 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:32,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:32,205 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:32,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:32,225 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:32,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:32,247 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:32,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:32,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117275070] [2021-03-11 14:34:32,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:32,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:32,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242015613] [2021-03-11 14:34:32,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:32,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:32,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:32,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:32,269 INFO L87 Difference]: Start difference. First operand 344 states and 1090 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:32,336 INFO L93 Difference]: Finished difference Result 635 states and 1758 transitions. [2021-03-11 14:34:32,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:32,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:32,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:32,337 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:34:32,337 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:34:32,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:32,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:34:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 352. [2021-03-11 14:34:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 3.1623931623931623) internal successors, (1110), 351 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1110 transitions. [2021-03-11 14:34:32,343 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1110 transitions. Word has length 19 [2021-03-11 14:34:32,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:32,343 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 1110 transitions. [2021-03-11 14:34:32,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1110 transitions. [2021-03-11 14:34:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:32,343 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:32,343 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:32,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-11 14:34:32,343 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:32,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1757138198, now seen corresponding path program 96 times [2021-03-11 14:34:32,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:32,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907201477] [2021-03-11 14:34:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:32,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:32,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:32,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:32,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:32,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:32,376 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:32,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:32,392 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:32,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:32,413 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:32,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:32,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907201477] [2021-03-11 14:34:32,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:32,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:32,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706835524] [2021-03-11 14:34:32,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:32,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:32,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:32,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:32,435 INFO L87 Difference]: Start difference. First operand 352 states and 1110 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:32,508 INFO L93 Difference]: Finished difference Result 638 states and 1759 transitions. [2021-03-11 14:34:32,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:32,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:32,509 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:34:32,509 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:34:32,510 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:32,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:34:32,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 337. [2021-03-11 14:34:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 3.199404761904762) internal successors, (1075), 336 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 1075 transitions. [2021-03-11 14:34:32,516 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 1075 transitions. Word has length 19 [2021-03-11 14:34:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:32,516 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 1075 transitions. [2021-03-11 14:34:32,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 1075 transitions. [2021-03-11 14:34:32,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:32,517 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:32,517 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:32,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-11 14:34:32,517 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:32,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1665827752, now seen corresponding path program 97 times [2021-03-11 14:34:32,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:32,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128133302] [2021-03-11 14:34:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:32,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:32,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:32,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:32,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:32,553 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:32,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:32,582 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:32,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:32,604 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:32,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:32,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128133302] [2021-03-11 14:34:32,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:32,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:32,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074476646] [2021-03-11 14:34:32,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:32,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:32,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:32,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:32,627 INFO L87 Difference]: Start difference. First operand 337 states and 1075 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:32,685 INFO L93 Difference]: Finished difference Result 676 states and 1927 transitions. [2021-03-11 14:34:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:32,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:32,686 INFO L225 Difference]: With dead ends: 676 [2021-03-11 14:34:32,686 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:34:32,686 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:34:32,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 351. [2021-03-11 14:34:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 3.2085714285714286) internal successors, (1123), 350 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1123 transitions. [2021-03-11 14:34:32,692 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1123 transitions. Word has length 19 [2021-03-11 14:34:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:32,692 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 1123 transitions. [2021-03-11 14:34:32,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1123 transitions. [2021-03-11 14:34:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:32,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:32,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:32,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-11 14:34:32,693 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:32,693 INFO L82 PathProgramCache]: Analyzing trace with hash 791492426, now seen corresponding path program 98 times [2021-03-11 14:34:32,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:32,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761767741] [2021-03-11 14:34:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:32,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:32,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:32,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:32,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:32,730 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:32,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:32,759 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:32,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:32,781 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:32,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:32,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761767741] [2021-03-11 14:34:32,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:32,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:32,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682183968] [2021-03-11 14:34:32,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:32,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:32,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:32,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:32,804 INFO L87 Difference]: Start difference. First operand 351 states and 1123 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:32,870 INFO L93 Difference]: Finished difference Result 666 states and 1890 transitions. [2021-03-11 14:34:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:32,871 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:34:32,871 INFO L226 Difference]: Without dead ends: 630 [2021-03-11 14:34:32,871 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-03-11 14:34:32,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 345. [2021-03-11 14:34:32,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.2180232558139537) internal successors, (1107), 344 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1107 transitions. [2021-03-11 14:34:32,877 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1107 transitions. Word has length 19 [2021-03-11 14:34:32,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:32,877 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1107 transitions. [2021-03-11 14:34:32,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1107 transitions. [2021-03-11 14:34:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:32,878 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:32,878 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:32,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-11 14:34:32,878 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1139734548, now seen corresponding path program 99 times [2021-03-11 14:34:32,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:32,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872057708] [2021-03-11 14:34:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:32,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:32,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:32,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:32,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:32,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:32,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:32,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:32,925 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:32,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:32,946 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:32,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:32,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872057708] [2021-03-11 14:34:32,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:32,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:32,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013493917] [2021-03-11 14:34:32,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:32,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:32,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:32,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:32,964 INFO L87 Difference]: Start difference. First operand 345 states and 1107 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:33,043 INFO L93 Difference]: Finished difference Result 682 states and 1946 transitions. [2021-03-11 14:34:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:33,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:33,044 INFO L225 Difference]: With dead ends: 682 [2021-03-11 14:34:33,045 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:34:33,045 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:34:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 354. [2021-03-11 14:34:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 3.198300283286119) internal successors, (1129), 353 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1129 transitions. [2021-03-11 14:34:33,050 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1129 transitions. Word has length 19 [2021-03-11 14:34:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:33,050 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 1129 transitions. [2021-03-11 14:34:33,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1129 transitions. [2021-03-11 14:34:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:33,050 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:33,050 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:33,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-11 14:34:33,050 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:33,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1885031692, now seen corresponding path program 100 times [2021-03-11 14:34:33,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:33,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400927757] [2021-03-11 14:34:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:33,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:33,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:33,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:33,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:33,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:33,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:33,099 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:33,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:33,117 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:33,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:33,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400927757] [2021-03-11 14:34:33,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:33,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:33,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277588060] [2021-03-11 14:34:33,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:33,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:33,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:33,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:33,135 INFO L87 Difference]: Start difference. First operand 354 states and 1129 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:33,194 INFO L93 Difference]: Finished difference Result 675 states and 1916 transitions. [2021-03-11 14:34:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:33,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:33,195 INFO L225 Difference]: With dead ends: 675 [2021-03-11 14:34:33,195 INFO L226 Difference]: Without dead ends: 633 [2021-03-11 14:34:33,195 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:33,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-03-11 14:34:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 345. [2021-03-11 14:34:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.2063953488372094) internal successors, (1103), 344 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1103 transitions. [2021-03-11 14:34:33,200 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1103 transitions. Word has length 19 [2021-03-11 14:34:33,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:33,200 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1103 transitions. [2021-03-11 14:34:33,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1103 transitions. [2021-03-11 14:34:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:33,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:33,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:33,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-11 14:34:33,201 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:33,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:33,201 INFO L82 PathProgramCache]: Analyzing trace with hash 220037620, now seen corresponding path program 101 times [2021-03-11 14:34:33,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:33,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180019437] [2021-03-11 14:34:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:33,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:33,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:33,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:33,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:33,238 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:33,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:33,254 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:33,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:33,275 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:33,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:33,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180019437] [2021-03-11 14:34:33,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:33,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:33,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764184212] [2021-03-11 14:34:33,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:33,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:33,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:33,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:33,297 INFO L87 Difference]: Start difference. First operand 345 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:33,368 INFO L93 Difference]: Finished difference Result 657 states and 1861 transitions. [2021-03-11 14:34:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:33,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:33,369 INFO L225 Difference]: With dead ends: 657 [2021-03-11 14:34:33,369 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:34:33,369 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:34:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 349. [2021-03-11 14:34:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.192528735632184) internal successors, (1111), 348 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1111 transitions. [2021-03-11 14:34:33,376 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1111 transitions. Word has length 19 [2021-03-11 14:34:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:33,376 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 1111 transitions. [2021-03-11 14:34:33,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1111 transitions. [2021-03-11 14:34:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:33,377 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:33,377 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:33,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-11 14:34:33,377 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1930650928, now seen corresponding path program 102 times [2021-03-11 14:34:33,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:33,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947202277] [2021-03-11 14:34:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:33,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:33,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:33,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:33,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:33,408 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:33,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:33,431 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:33,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:33,457 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:33,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:33,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947202277] [2021-03-11 14:34:33,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:33,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:33,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121203617] [2021-03-11 14:34:33,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:33,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:33,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:33,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:33,480 INFO L87 Difference]: Start difference. First operand 349 states and 1111 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:33,553 INFO L93 Difference]: Finished difference Result 660 states and 1867 transitions. [2021-03-11 14:34:33,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:33,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:33,555 INFO L225 Difference]: With dead ends: 660 [2021-03-11 14:34:33,555 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:34:33,555 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:34:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 341. [2021-03-11 14:34:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 3.208823529411765) internal successors, (1091), 340 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1091 transitions. [2021-03-11 14:34:33,561 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1091 transitions. Word has length 19 [2021-03-11 14:34:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:33,562 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 1091 transitions. [2021-03-11 14:34:33,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1091 transitions. [2021-03-11 14:34:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:33,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:33,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:33,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-11 14:34:33,562 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:33,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1018198586, now seen corresponding path program 103 times [2021-03-11 14:34:33,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:33,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678634609] [2021-03-11 14:34:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:33,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:33,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:33,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:33,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:33,595 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:33,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:33,624 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:33,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:33,648 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:33,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:33,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678634609] [2021-03-11 14:34:33,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:33,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:33,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407217482] [2021-03-11 14:34:33,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:33,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:33,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:33,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:33,672 INFO L87 Difference]: Start difference. First operand 341 states and 1091 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:33,753 INFO L93 Difference]: Finished difference Result 684 states and 1951 transitions. [2021-03-11 14:34:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:33,755 INFO L225 Difference]: With dead ends: 684 [2021-03-11 14:34:33,755 INFO L226 Difference]: Without dead ends: 644 [2021-03-11 14:34:33,755 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:33,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-03-11 14:34:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 352. [2021-03-11 14:34:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 3.1994301994301995) internal successors, (1123), 351 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1123 transitions. [2021-03-11 14:34:33,762 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1123 transitions. Word has length 19 [2021-03-11 14:34:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:33,762 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 1123 transitions. [2021-03-11 14:34:33,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,762 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1123 transitions. [2021-03-11 14:34:33,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:33,763 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:33,763 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:33,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-11 14:34:33,763 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:33,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1892533912, now seen corresponding path program 104 times [2021-03-11 14:34:33,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:33,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641590297] [2021-03-11 14:34:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:33,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:33,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:33,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:33,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:33,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:33,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:33,829 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:33,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:33,853 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:33,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:33,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641590297] [2021-03-11 14:34:33,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:33,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:33,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505635512] [2021-03-11 14:34:33,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:33,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:33,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:33,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:33,877 INFO L87 Difference]: Start difference. First operand 352 states and 1123 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:33,932 INFO L93 Difference]: Finished difference Result 674 states and 1914 transitions. [2021-03-11 14:34:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:33,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:33,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:33,933 INFO L225 Difference]: With dead ends: 674 [2021-03-11 14:34:33,934 INFO L226 Difference]: Without dead ends: 638 [2021-03-11 14:34:33,934 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:33,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-03-11 14:34:33,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 346. [2021-03-11 14:34:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.205797101449275) internal successors, (1106), 345 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1106 transitions. [2021-03-11 14:34:33,940 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1106 transitions. Word has length 19 [2021-03-11 14:34:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:33,941 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 1106 transitions. [2021-03-11 14:34:33,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1106 transitions. [2021-03-11 14:34:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:33,941 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:33,941 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:33,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-11 14:34:33,942 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:33,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:33,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1215908908, now seen corresponding path program 105 times [2021-03-11 14:34:33,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:33,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230825071] [2021-03-11 14:34:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:33,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:33,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:33,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:33,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:33,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:33,973 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:33,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:33,989 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:33,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:34,012 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:34,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:34,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230825071] [2021-03-11 14:34:34,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:34,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:34,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532777835] [2021-03-11 14:34:34,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:34,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:34,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:34,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:34,034 INFO L87 Difference]: Start difference. First operand 346 states and 1106 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:34,100 INFO L93 Difference]: Finished difference Result 696 states and 1990 transitions. [2021-03-11 14:34:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:34,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:34,101 INFO L225 Difference]: With dead ends: 696 [2021-03-11 14:34:34,101 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:34:34,101 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:34:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 358. [2021-03-11 14:34:34,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 3.1848739495798317) internal successors, (1137), 357 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1137 transitions. [2021-03-11 14:34:34,106 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1137 transitions. Word has length 19 [2021-03-11 14:34:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:34,107 INFO L480 AbstractCegarLoop]: Abstraction has 358 states and 1137 transitions. [2021-03-11 14:34:34,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1137 transitions. [2021-03-11 14:34:34,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:34,107 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:34,107 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:34,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-11 14:34:34,107 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash -2110174348, now seen corresponding path program 106 times [2021-03-11 14:34:34,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:34,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504181455] [2021-03-11 14:34:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:34,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:34,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:34,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:34,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:34,134 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:34,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:34,148 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:34,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:34,166 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:34,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:34,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504181455] [2021-03-11 14:34:34,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:34,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:34,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76230084] [2021-03-11 14:34:34,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:34,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:34,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:34,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:34,184 INFO L87 Difference]: Start difference. First operand 358 states and 1137 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:34,244 INFO L93 Difference]: Finished difference Result 692 states and 1966 transitions. [2021-03-11 14:34:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:34,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:34,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:34,245 INFO L225 Difference]: With dead ends: 692 [2021-03-11 14:34:34,245 INFO L226 Difference]: Without dead ends: 644 [2021-03-11 14:34:34,245 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-03-11 14:34:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 346. [2021-03-11 14:34:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.1913043478260867) internal successors, (1101), 345 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1101 transitions. [2021-03-11 14:34:34,250 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1101 transitions. Word has length 19 [2021-03-11 14:34:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:34,250 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 1101 transitions. [2021-03-11 14:34:34,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1101 transitions. [2021-03-11 14:34:34,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:34,250 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:34,250 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:34,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-11 14:34:34,251 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:34,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1719286220, now seen corresponding path program 107 times [2021-03-11 14:34:34,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:34,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477779746] [2021-03-11 14:34:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:34,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:34,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:34,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:34,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:34,278 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:34,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:34,291 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:34,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:34,309 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:34,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:34,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477779746] [2021-03-11 14:34:34,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:34,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:34,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674634495] [2021-03-11 14:34:34,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:34,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:34,328 INFO L87 Difference]: Start difference. First operand 346 states and 1101 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:34,382 INFO L93 Difference]: Finished difference Result 669 states and 1895 transitions. [2021-03-11 14:34:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:34,383 INFO L225 Difference]: With dead ends: 669 [2021-03-11 14:34:34,383 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:34:34,383 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:34:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 351. [2021-03-11 14:34:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 3.1742857142857144) internal successors, (1111), 350 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1111 transitions. [2021-03-11 14:34:34,388 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1111 transitions. Word has length 19 [2021-03-11 14:34:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:34,389 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 1111 transitions. [2021-03-11 14:34:34,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1111 transitions. [2021-03-11 14:34:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:34,389 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:34,389 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:34,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-11 14:34:34,389 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:34,389 INFO L82 PathProgramCache]: Analyzing trace with hash 846633742, now seen corresponding path program 108 times [2021-03-11 14:34:34,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:34,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068718383] [2021-03-11 14:34:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:34,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:34,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:34,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:34,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:34,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:34,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:34,436 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:34,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:34,457 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:34,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:34,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068718383] [2021-03-11 14:34:34,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:34,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:34,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488606358] [2021-03-11 14:34:34,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:34,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:34,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:34,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:34,478 INFO L87 Difference]: Start difference. First operand 351 states and 1111 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:34,546 INFO L93 Difference]: Finished difference Result 675 states and 1909 transitions. [2021-03-11 14:34:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:34,547 INFO L225 Difference]: With dead ends: 675 [2021-03-11 14:34:34,547 INFO L226 Difference]: Without dead ends: 629 [2021-03-11 14:34:34,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:34,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-03-11 14:34:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 341. [2021-03-11 14:34:34,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 3.197058823529412) internal successors, (1087), 340 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1087 transitions. [2021-03-11 14:34:34,553 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1087 transitions. Word has length 19 [2021-03-11 14:34:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:34,553 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 1087 transitions. [2021-03-11 14:34:34,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,553 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1087 transitions. [2021-03-11 14:34:34,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:34,553 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:34,553 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:34,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-11 14:34:34,553 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:34,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:34,554 INFO L82 PathProgramCache]: Analyzing trace with hash -601878970, now seen corresponding path program 109 times [2021-03-11 14:34:34,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:34,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110354701] [2021-03-11 14:34:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:34,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:34,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:34,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:34,574 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:34,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:34,587 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:34,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:34,607 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:34,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:34,629 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:34,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:34,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110354701] [2021-03-11 14:34:34,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:34,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:34,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816534107] [2021-03-11 14:34:34,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:34,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:34,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:34,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:34,652 INFO L87 Difference]: Start difference. First operand 341 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:34,721 INFO L93 Difference]: Finished difference Result 702 states and 2022 transitions. [2021-03-11 14:34:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:34,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:34,722 INFO L225 Difference]: With dead ends: 702 [2021-03-11 14:34:34,722 INFO L226 Difference]: Without dead ends: 662 [2021-03-11 14:34:34,722 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-03-11 14:34:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 358. [2021-03-11 14:34:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 3.2072829131652663) internal successors, (1145), 357 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1145 transitions. [2021-03-11 14:34:34,729 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1145 transitions. Word has length 19 [2021-03-11 14:34:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:34,729 INFO L480 AbstractCegarLoop]: Abstraction has 358 states and 1145 transitions. [2021-03-11 14:34:34,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1145 transitions. [2021-03-11 14:34:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:34,730 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:34,730 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:34,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-11 14:34:34,730 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:34,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1347176114, now seen corresponding path program 110 times [2021-03-11 14:34:34,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:34,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678572076] [2021-03-11 14:34:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:34,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:34,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:34,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:34,750 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:34,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:34,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:34,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:34,779 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:34,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:34,801 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:34,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:34,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678572076] [2021-03-11 14:34:34,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:34,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:34,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316956231] [2021-03-11 14:34:34,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:34,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:34,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:34,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:34,823 INFO L87 Difference]: Start difference. First operand 358 states and 1145 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:34,891 INFO L93 Difference]: Finished difference Result 695 states and 1992 transitions. [2021-03-11 14:34:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:34,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:34,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:34,892 INFO L225 Difference]: With dead ends: 695 [2021-03-11 14:34:34,892 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:34:34,892 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:34,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:34:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 349. [2021-03-11 14:34:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.204022988505747) internal successors, (1115), 348 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1115 transitions. [2021-03-11 14:34:34,899 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1115 transitions. Word has length 19 [2021-03-11 14:34:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:34,900 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 1115 transitions. [2021-03-11 14:34:34,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1115 transitions. [2021-03-11 14:34:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:34,900 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:34,900 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:34,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-11 14:34:34,901 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash 142823528, now seen corresponding path program 111 times [2021-03-11 14:34:34,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:34,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653868398] [2021-03-11 14:34:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:34,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:34,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:34,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:34,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:34,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:34,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:34,942 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:34,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:34,959 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:34,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:34,982 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:34,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:35,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653868398] [2021-03-11 14:34:35,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:35,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:35,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659018467] [2021-03-11 14:34:35,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:35,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:35,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:35,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:35,005 INFO L87 Difference]: Start difference. First operand 349 states and 1115 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:35,063 INFO L93 Difference]: Finished difference Result 708 states and 2035 transitions. [2021-03-11 14:34:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:35,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:35,064 INFO L225 Difference]: With dead ends: 708 [2021-03-11 14:34:35,064 INFO L226 Difference]: Without dead ends: 668 [2021-03-11 14:34:35,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-03-11 14:34:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 361. [2021-03-11 14:34:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 3.183333333333333) internal successors, (1146), 360 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1146 transitions. [2021-03-11 14:34:35,071 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1146 transitions. Word has length 19 [2021-03-11 14:34:35,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:35,071 INFO L480 AbstractCegarLoop]: Abstraction has 361 states and 1146 transitions. [2021-03-11 14:34:35,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,071 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1146 transitions. [2021-03-11 14:34:35,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:35,072 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:35,072 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:35,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-11 14:34:35,072 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1111707568, now seen corresponding path program 112 times [2021-03-11 14:34:35,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:35,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471705611] [2021-03-11 14:34:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:35,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:35,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:35,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:35,092 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:35,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:35,104 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:35,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:35,120 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:35,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:35,141 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:35,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:35,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471705611] [2021-03-11 14:34:35,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:35,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:35,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033259049] [2021-03-11 14:34:35,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:35,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:35,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:35,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:35,159 INFO L87 Difference]: Start difference. First operand 361 states and 1146 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:35,217 INFO L93 Difference]: Finished difference Result 704 states and 2011 transitions. [2021-03-11 14:34:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:35,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:35,219 INFO L225 Difference]: With dead ends: 704 [2021-03-11 14:34:35,219 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:34:35,219 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:35,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:34:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 349. [2021-03-11 14:34:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.1810344827586206) internal successors, (1107), 348 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1107 transitions. [2021-03-11 14:34:35,226 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1107 transitions. Word has length 19 [2021-03-11 14:34:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:35,226 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 1107 transitions. [2021-03-11 14:34:35,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1107 transitions. [2021-03-11 14:34:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:35,227 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:35,227 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:35,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-11 14:34:35,227 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:35,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:35,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1376541946, now seen corresponding path program 113 times [2021-03-11 14:34:35,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:35,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042273106] [2021-03-11 14:34:35,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:35,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:35,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:35,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:35,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:35,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:35,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:35,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:35,277 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:35,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:35,298 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:35,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:35,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042273106] [2021-03-11 14:34:35,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:35,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:35,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917378496] [2021-03-11 14:34:35,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:35,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:35,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:35,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:35,319 INFO L87 Difference]: Start difference. First operand 349 states and 1107 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:35,386 INFO L93 Difference]: Finished difference Result 690 states and 1970 transitions. [2021-03-11 14:34:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:35,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:35,388 INFO L225 Difference]: With dead ends: 690 [2021-03-11 14:34:35,388 INFO L226 Difference]: Without dead ends: 657 [2021-03-11 14:34:35,388 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-03-11 14:34:35,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 357. [2021-03-11 14:34:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 3.1657303370786516) internal successors, (1127), 356 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1127 transitions. [2021-03-11 14:34:35,395 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1127 transitions. Word has length 19 [2021-03-11 14:34:35,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:35,395 INFO L480 AbstractCegarLoop]: Abstraction has 357 states and 1127 transitions. [2021-03-11 14:34:35,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,395 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1127 transitions. [2021-03-11 14:34:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:35,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:35,396 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:35,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-11 14:34:35,396 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:35,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:35,396 INFO L82 PathProgramCache]: Analyzing trace with hash -517667416, now seen corresponding path program 114 times [2021-03-11 14:34:35,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:35,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233251336] [2021-03-11 14:34:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:35,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:35,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:35,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:35,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:35,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:35,433 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:35,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:35,450 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:35,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:35,473 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:35,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:35,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233251336] [2021-03-11 14:34:35,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:35,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:35,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776748649] [2021-03-11 14:34:35,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:35,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:35,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:35,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:35,495 INFO L87 Difference]: Start difference. First operand 357 states and 1127 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:35,569 INFO L93 Difference]: Finished difference Result 693 states and 1971 transitions. [2021-03-11 14:34:35,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:35,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:35,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:35,570 INFO L225 Difference]: With dead ends: 693 [2021-03-11 14:34:35,570 INFO L226 Difference]: Without dead ends: 641 [2021-03-11 14:34:35,570 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-03-11 14:34:35,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 341. [2021-03-11 14:34:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 3.1852941176470586) internal successors, (1083), 340 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1083 transitions. [2021-03-11 14:34:35,577 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1083 transitions. Word has length 19 [2021-03-11 14:34:35,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:35,577 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 1083 transitions. [2021-03-11 14:34:35,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1083 transitions. [2021-03-11 14:34:35,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:35,577 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:35,578 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:35,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-11 14:34:35,578 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:35,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:35,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1295748776, now seen corresponding path program 115 times [2021-03-11 14:34:35,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:35,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157253589] [2021-03-11 14:34:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:35,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:35,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:35,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:35,599 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:35,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:35,611 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:35,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:35,628 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:35,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:35,650 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:35,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:35,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157253589] [2021-03-11 14:34:35,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:35,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:35,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007389270] [2021-03-11 14:34:35,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:35,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:35,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:35,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:35,672 INFO L87 Difference]: Start difference. First operand 341 states and 1083 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:35,731 INFO L93 Difference]: Finished difference Result 651 states and 1839 transitions. [2021-03-11 14:34:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:35,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:35,732 INFO L225 Difference]: With dead ends: 651 [2021-03-11 14:34:35,732 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:34:35,732 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:34:35,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 349. [2021-03-11 14:34:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.1810344827586206) internal successors, (1107), 348 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1107 transitions. [2021-03-11 14:34:35,737 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1107 transitions. Word has length 19 [2021-03-11 14:34:35,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:35,737 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 1107 transitions. [2021-03-11 14:34:35,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,737 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1107 transitions. [2021-03-11 14:34:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:35,738 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:35,738 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:35,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-11 14:34:35,738 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:35,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1288605212, now seen corresponding path program 116 times [2021-03-11 14:34:35,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:35,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30924770] [2021-03-11 14:34:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:35,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:35,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:35,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:35,759 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:35,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:35,771 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:35,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:35,787 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:35,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:35,813 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:35,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:35,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30924770] [2021-03-11 14:34:35,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:35,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:35,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724870799] [2021-03-11 14:34:35,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:35,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:35,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:35,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:35,834 INFO L87 Difference]: Start difference. First operand 349 states and 1107 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:35,900 INFO L93 Difference]: Finished difference Result 654 states and 1845 transitions. [2021-03-11 14:34:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:35,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:35,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:35,901 INFO L225 Difference]: With dead ends: 654 [2021-03-11 14:34:35,902 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:34:35,902 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:35,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:34:35,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 345. [2021-03-11 14:34:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.183139534883721) internal successors, (1095), 344 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1095 transitions. [2021-03-11 14:34:35,909 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1095 transitions. Word has length 19 [2021-03-11 14:34:35,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:35,909 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1095 transitions. [2021-03-11 14:34:35,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1095 transitions. [2021-03-11 14:34:35,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:35,910 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:35,910 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:35,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-11 14:34:35,910 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:35,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2040451274, now seen corresponding path program 117 times [2021-03-11 14:34:35,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:35,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969907741] [2021-03-11 14:34:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:35,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:35,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:35,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:35,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:35,934 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:35,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:35,946 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:35,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:35,963 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:35,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:35,986 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:35,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:36,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969907741] [2021-03-11 14:34:36,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:36,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:36,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360347345] [2021-03-11 14:34:36,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:36,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:36,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:36,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:36,009 INFO L87 Difference]: Start difference. First operand 345 states and 1095 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:36,085 INFO L93 Difference]: Finished difference Result 655 states and 1847 transitions. [2021-03-11 14:34:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:36,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:36,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:36,087 INFO L225 Difference]: With dead ends: 655 [2021-03-11 14:34:36,087 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:34:36,087 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:34:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 350. [2021-03-11 14:34:36,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 3.166189111747851) internal successors, (1105), 349 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1105 transitions. [2021-03-11 14:34:36,093 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1105 transitions. Word has length 19 [2021-03-11 14:34:36,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:36,093 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 1105 transitions. [2021-03-11 14:34:36,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,094 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1105 transitions. [2021-03-11 14:34:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:36,094 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:36,094 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:36,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-11 14:34:36,094 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:36,095 INFO L82 PathProgramCache]: Analyzing trace with hash 311403940, now seen corresponding path program 118 times [2021-03-11 14:34:36,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:36,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128734942] [2021-03-11 14:34:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:36,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:36,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:36,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:36,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:36,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:36,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:36,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:36,143 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:36,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:36,166 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:36,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:36,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128734942] [2021-03-11 14:34:36,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:36,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:36,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056278388] [2021-03-11 14:34:36,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:36,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:36,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:36,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:36,201 INFO L87 Difference]: Start difference. First operand 350 states and 1105 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:36,257 INFO L93 Difference]: Finished difference Result 661 states and 1861 transitions. [2021-03-11 14:34:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:36,258 INFO L225 Difference]: With dead ends: 661 [2021-03-11 14:34:36,258 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:34:36,259 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:34:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 345. [2021-03-11 14:34:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.171511627906977) internal successors, (1091), 344 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1091 transitions. [2021-03-11 14:34:36,263 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1091 transitions. Word has length 19 [2021-03-11 14:34:36,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:36,263 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1091 transitions. [2021-03-11 14:34:36,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1091 transitions. [2021-03-11 14:34:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:36,264 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:36,264 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:36,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-11 14:34:36,264 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:36,264 INFO L82 PathProgramCache]: Analyzing trace with hash 945502282, now seen corresponding path program 119 times [2021-03-11 14:34:36,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:36,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292941219] [2021-03-11 14:34:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:36,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:36,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:36,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:36,284 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:36,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:36,294 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:36,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:36,307 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:36,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:36,325 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:36,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:36,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292941219] [2021-03-11 14:34:36,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:36,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:36,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203719595] [2021-03-11 14:34:36,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:36,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:36,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:36,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:36,343 INFO L87 Difference]: Start difference. First operand 345 states and 1091 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:36,399 INFO L93 Difference]: Finished difference Result 664 states and 1876 transitions. [2021-03-11 14:34:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:36,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:36,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:36,400 INFO L225 Difference]: With dead ends: 664 [2021-03-11 14:34:36,400 INFO L226 Difference]: Without dead ends: 631 [2021-03-11 14:34:36,401 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-03-11 14:34:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 353. [2021-03-11 14:34:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.15625) internal successors, (1111), 352 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1111 transitions. [2021-03-11 14:34:36,406 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1111 transitions. Word has length 19 [2021-03-11 14:34:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:36,406 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 1111 transitions. [2021-03-11 14:34:36,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1111 transitions. [2021-03-11 14:34:36,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:36,406 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:36,406 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:36,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-11 14:34:36,406 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1800808936, now seen corresponding path program 120 times [2021-03-11 14:34:36,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:36,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953649836] [2021-03-11 14:34:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:36,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:36,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:36,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:36,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:36,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:36,438 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:36,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:36,455 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:36,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:36,474 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:36,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:36,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953649836] [2021-03-11 14:34:36,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:36,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:36,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169225558] [2021-03-11 14:34:36,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:36,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:36,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:36,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:36,491 INFO L87 Difference]: Start difference. First operand 353 states and 1111 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:36,550 INFO L93 Difference]: Finished difference Result 667 states and 1877 transitions. [2021-03-11 14:34:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:36,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:36,551 INFO L225 Difference]: With dead ends: 667 [2021-03-11 14:34:36,552 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:34:36,552 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:34:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 330. [2021-03-11 14:34:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.2249240121580547) internal successors, (1061), 329 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1061 transitions. [2021-03-11 14:34:36,556 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1061 transitions. Word has length 19 [2021-03-11 14:34:36,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:36,556 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 1061 transitions. [2021-03-11 14:34:36,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1061 transitions. [2021-03-11 14:34:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:36,557 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:36,557 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:36,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-11 14:34:36,557 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:36,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:36,557 INFO L82 PathProgramCache]: Analyzing trace with hash 822861400, now seen corresponding path program 121 times [2021-03-11 14:34:36,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:36,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931162400] [2021-03-11 14:34:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:36,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:36,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:36,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:36,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:36,580 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:36,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:36,593 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:36,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:36,610 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:36,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:36,632 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:36,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:36,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931162400] [2021-03-11 14:34:36,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:36,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:36,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129529543] [2021-03-11 14:34:36,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:36,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:36,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:36,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:36,654 INFO L87 Difference]: Start difference. First operand 330 states and 1061 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:36,709 INFO L93 Difference]: Finished difference Result 685 states and 1929 transitions. [2021-03-11 14:34:36,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:36,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:36,710 INFO L225 Difference]: With dead ends: 685 [2021-03-11 14:34:36,710 INFO L226 Difference]: Without dead ends: 654 [2021-03-11 14:34:36,711 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:36,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-03-11 14:34:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 346. [2021-03-11 14:34:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.1913043478260867) internal successors, (1101), 345 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1101 transitions. [2021-03-11 14:34:36,717 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1101 transitions. Word has length 19 [2021-03-11 14:34:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:36,717 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 1101 transitions. [2021-03-11 14:34:36,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1101 transitions. [2021-03-11 14:34:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:36,718 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:36,718 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:36,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-11 14:34:36,718 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:36,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:36,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1197512586, now seen corresponding path program 122 times [2021-03-11 14:34:36,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:36,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776143717] [2021-03-11 14:34:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:36,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:36,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:36,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:36,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:36,741 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:36,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:36,753 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:36,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:36,771 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:36,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:36,793 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:36,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:36,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776143717] [2021-03-11 14:34:36,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:36,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:36,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772118568] [2021-03-11 14:34:36,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:36,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:36,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:36,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:36,811 INFO L87 Difference]: Start difference. First operand 346 states and 1101 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:36,869 INFO L93 Difference]: Finished difference Result 694 states and 1952 transitions. [2021-03-11 14:34:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:36,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:36,870 INFO L225 Difference]: With dead ends: 694 [2021-03-11 14:34:36,870 INFO L226 Difference]: Without dead ends: 646 [2021-03-11 14:34:36,871 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-03-11 14:34:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 338. [2021-03-11 14:34:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.2047477744807122) internal successors, (1080), 337 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1080 transitions. [2021-03-11 14:34:36,875 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1080 transitions. Word has length 19 [2021-03-11 14:34:36,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:36,875 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 1080 transitions. [2021-03-11 14:34:36,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:36,875 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1080 transitions. [2021-03-11 14:34:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:36,876 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:36,876 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:36,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-11 14:34:36,876 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:36,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:36,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2004251154, now seen corresponding path program 123 times [2021-03-11 14:34:36,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:36,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938795563] [2021-03-11 14:34:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:36,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:36,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:36,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:36,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:36,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:36,898 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:36,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:36,912 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:36,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:36,928 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:36,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:36,953 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:36,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:36,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938795563] [2021-03-11 14:34:36,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:36,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:36,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978073331] [2021-03-11 14:34:36,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:36,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:36,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:36,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:36,975 INFO L87 Difference]: Start difference. First operand 338 states and 1080 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:37,024 INFO L93 Difference]: Finished difference Result 679 states and 1906 transitions. [2021-03-11 14:34:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:37,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:37,025 INFO L225 Difference]: With dead ends: 679 [2021-03-11 14:34:37,025 INFO L226 Difference]: Without dead ends: 648 [2021-03-11 14:34:37,025 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-11 14:34:37,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 344. [2021-03-11 14:34:37,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 3.1807580174927113) internal successors, (1091), 343 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1091 transitions. [2021-03-11 14:34:37,030 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1091 transitions. Word has length 19 [2021-03-11 14:34:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:37,030 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 1091 transitions. [2021-03-11 14:34:37,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1091 transitions. [2021-03-11 14:34:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:37,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:37,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:37,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-11 14:34:37,031 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:37,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:37,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1028046404, now seen corresponding path program 124 times [2021-03-11 14:34:37,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:37,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757600613] [2021-03-11 14:34:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:37,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:37,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:37,044 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:37,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:37,051 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:37,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:37,061 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:37,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:37,075 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:37,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:37,092 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:37,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:37,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757600613] [2021-03-11 14:34:37,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:37,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:37,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928622688] [2021-03-11 14:34:37,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:37,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:37,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:37,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:37,110 INFO L87 Difference]: Start difference. First operand 344 states and 1091 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:37,176 INFO L93 Difference]: Finished difference Result 684 states and 1918 transitions. [2021-03-11 14:34:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:37,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:37,177 INFO L225 Difference]: With dead ends: 684 [2021-03-11 14:34:37,177 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:34:37,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:34:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 338. [2021-03-11 14:34:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.1869436201780417) internal successors, (1074), 337 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1074 transitions. [2021-03-11 14:34:37,183 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1074 transitions. Word has length 19 [2021-03-11 14:34:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:37,183 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 1074 transitions. [2021-03-11 14:34:37,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1074 transitions. [2021-03-11 14:34:37,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:37,183 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:37,183 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:37,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-11 14:34:37,184 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:37,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:37,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1100948602, now seen corresponding path program 125 times [2021-03-11 14:34:37,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:37,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748004772] [2021-03-11 14:34:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:37,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:37,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:37,204 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:37,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:37,211 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:37,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:37,221 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:37,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:37,235 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:37,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:37,253 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:37,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:37,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748004772] [2021-03-11 14:34:37,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:37,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:37,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470514513] [2021-03-11 14:34:37,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:37,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:37,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:37,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:37,271 INFO L87 Difference]: Start difference. First operand 338 states and 1074 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:37,328 INFO L93 Difference]: Finished difference Result 703 states and 1986 transitions. [2021-03-11 14:34:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:37,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:37,330 INFO L225 Difference]: With dead ends: 703 [2021-03-11 14:34:37,330 INFO L226 Difference]: Without dead ends: 663 [2021-03-11 14:34:37,330 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-03-11 14:34:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 350. [2021-03-11 14:34:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 3.166189111747851) internal successors, (1105), 349 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1105 transitions. [2021-03-11 14:34:37,336 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1105 transitions. Word has length 19 [2021-03-11 14:34:37,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:37,337 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 1105 transitions. [2021-03-11 14:34:37,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1105 transitions. [2021-03-11 14:34:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:37,337 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:37,337 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:37,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-11 14:34:37,338 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:37,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:37,338 INFO L82 PathProgramCache]: Analyzing trace with hash -242668718, now seen corresponding path program 126 times [2021-03-11 14:34:37,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:37,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250554021] [2021-03-11 14:34:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:37,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:37,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:37,352 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:37,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:37,359 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:37,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:37,371 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:37,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:37,387 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:37,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:37,407 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:37,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:37,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250554021] [2021-03-11 14:34:37,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:37,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:37,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501023958] [2021-03-11 14:34:37,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:37,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:37,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:37,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:37,430 INFO L87 Difference]: Start difference. First operand 350 states and 1105 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:37,516 INFO L93 Difference]: Finished difference Result 699 states and 1962 transitions. [2021-03-11 14:34:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:37,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:37,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:37,518 INFO L225 Difference]: With dead ends: 699 [2021-03-11 14:34:37,518 INFO L226 Difference]: Without dead ends: 643 [2021-03-11 14:34:37,518 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-03-11 14:34:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 330. [2021-03-11 14:34:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.2036474164133737) internal successors, (1054), 329 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1054 transitions. [2021-03-11 14:34:37,523 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1054 transitions. Word has length 19 [2021-03-11 14:34:37,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:37,523 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 1054 transitions. [2021-03-11 14:34:37,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1054 transitions. [2021-03-11 14:34:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:37,523 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:37,523 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:37,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-11 14:34:37,523 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:37,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1565948490, now seen corresponding path program 127 times [2021-03-11 14:34:37,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:37,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625260926] [2021-03-11 14:34:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:37,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:37,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:37,537 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:37,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:37,545 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:37,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:37,555 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:37,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:37,570 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:37,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:37,588 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:37,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:37,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625260926] [2021-03-11 14:34:37,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:37,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:37,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98758545] [2021-03-11 14:34:37,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:37,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:37,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:37,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:37,607 INFO L87 Difference]: Start difference. First operand 330 states and 1054 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:37,660 INFO L93 Difference]: Finished difference Result 676 states and 1893 transitions. [2021-03-11 14:34:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:37,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:37,661 INFO L225 Difference]: With dead ends: 676 [2021-03-11 14:34:37,661 INFO L226 Difference]: Without dead ends: 645 [2021-03-11 14:34:37,661 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-03-11 14:34:37,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 344. [2021-03-11 14:34:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 3.174927113702624) internal successors, (1089), 343 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1089 transitions. [2021-03-11 14:34:37,668 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1089 transitions. Word has length 19 [2021-03-11 14:34:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:37,668 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 1089 transitions. [2021-03-11 14:34:37,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1089 transitions. [2021-03-11 14:34:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:37,669 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:37,669 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:37,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-11 14:34:37,669 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:37,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1940599676, now seen corresponding path program 128 times [2021-03-11 14:34:37,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:37,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019363898] [2021-03-11 14:34:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:37,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:37,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:37,682 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:37,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:37,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:37,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:37,701 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:37,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:37,718 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:37,739 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:37,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:37,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019363898] [2021-03-11 14:34:37,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:37,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:37,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477727497] [2021-03-11 14:34:37,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:37,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:37,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:37,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:37,757 INFO L87 Difference]: Start difference. First operand 344 states and 1089 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:37,813 INFO L93 Difference]: Finished difference Result 685 states and 1916 transitions. [2021-03-11 14:34:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:37,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:37,814 INFO L225 Difference]: With dead ends: 685 [2021-03-11 14:34:37,814 INFO L226 Difference]: Without dead ends: 637 [2021-03-11 14:34:37,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-11 14:34:37,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 336. [2021-03-11 14:34:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.191044776119403) internal successors, (1069), 335 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1069 transitions. [2021-03-11 14:34:37,819 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1069 transitions. Word has length 19 [2021-03-11 14:34:37,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:37,819 INFO L480 AbstractCegarLoop]: Abstraction has 336 states and 1069 transitions. [2021-03-11 14:34:37,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1069 transitions. [2021-03-11 14:34:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:37,820 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:37,820 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:37,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-11 14:34:37,820 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:37,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1873225276, now seen corresponding path program 129 times [2021-03-11 14:34:37,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:37,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673932542] [2021-03-11 14:34:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:37,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:37,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:37,833 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:37,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:37,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:37,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:37,849 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:37,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:37,893 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:37,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:37,917 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:37,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:37,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673932542] [2021-03-11 14:34:37,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:37,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:37,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907662472] [2021-03-11 14:34:37,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:37,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:37,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:37,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:37,935 INFO L87 Difference]: Start difference. First operand 336 states and 1069 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:37,984 INFO L93 Difference]: Finished difference Result 666 states and 1859 transitions. [2021-03-11 14:34:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:37,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:37,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:37,985 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:34:37,985 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:34:37,985 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:34:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 341. [2021-03-11 14:34:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 3.1705882352941175) internal successors, (1078), 340 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1078 transitions. [2021-03-11 14:34:37,990 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1078 transitions. Word has length 19 [2021-03-11 14:34:37,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:37,990 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 1078 transitions. [2021-03-11 14:34:37,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:37,990 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1078 transitions. [2021-03-11 14:34:37,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:37,991 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:37,991 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:37,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-11 14:34:37,991 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:37,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:37,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1670679926, now seen corresponding path program 130 times [2021-03-11 14:34:37,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:37,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304254588] [2021-03-11 14:34:37,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:37,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:37,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:37,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:38,004 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:38,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:38,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:38,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:38,023 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:38,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:38,050 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:38,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:38,075 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:38,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:38,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304254588] [2021-03-11 14:34:38,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:38,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:38,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183421645] [2021-03-11 14:34:38,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:38,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:38,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:38,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:38,097 INFO L87 Difference]: Start difference. First operand 341 states and 1078 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:38,169 INFO L93 Difference]: Finished difference Result 668 states and 1863 transitions. [2021-03-11 14:34:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:38,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:38,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:38,170 INFO L225 Difference]: With dead ends: 668 [2021-03-11 14:34:38,170 INFO L226 Difference]: Without dead ends: 630 [2021-03-11 14:34:38,170 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-03-11 14:34:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 336. [2021-03-11 14:34:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.1761194029850746) internal successors, (1064), 335 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1064 transitions. [2021-03-11 14:34:38,177 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1064 transitions. Word has length 19 [2021-03-11 14:34:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:38,177 INFO L480 AbstractCegarLoop]: Abstraction has 336 states and 1064 transitions. [2021-03-11 14:34:38,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1064 transitions. [2021-03-11 14:34:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:38,178 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:38,178 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:38,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-11 14:34:38,178 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:38,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:38,178 INFO L82 PathProgramCache]: Analyzing trace with hash 400559450, now seen corresponding path program 131 times [2021-03-11 14:34:38,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:38,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227789270] [2021-03-11 14:34:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:38,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:38,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:38,191 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:38,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:38,199 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:38,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:38,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:38,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:38,227 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:38,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:38,251 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:38,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:38,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227789270] [2021-03-11 14:34:38,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:38,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:38,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769091504] [2021-03-11 14:34:38,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:38,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:38,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:38,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:38,275 INFO L87 Difference]: Start difference. First operand 336 states and 1064 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:38,334 INFO L93 Difference]: Finished difference Result 688 states and 1931 transitions. [2021-03-11 14:34:38,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:38,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:38,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:38,335 INFO L225 Difference]: With dead ends: 688 [2021-03-11 14:34:38,335 INFO L226 Difference]: Without dead ends: 648 [2021-03-11 14:34:38,336 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:38,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-11 14:34:38,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 345. [2021-03-11 14:34:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.1569767441860463) internal successors, (1086), 344 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1086 transitions. [2021-03-11 14:34:38,340 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1086 transitions. Word has length 19 [2021-03-11 14:34:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:38,340 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 1086 transitions. [2021-03-11 14:34:38,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1086 transitions. [2021-03-11 14:34:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:38,341 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:38,341 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:38,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-11 14:34:38,341 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:38,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:38,341 INFO L82 PathProgramCache]: Analyzing trace with hash 399964804, now seen corresponding path program 132 times [2021-03-11 14:34:38,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:38,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239787112] [2021-03-11 14:34:38,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:38,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:38,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:38,362 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:38,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:38,370 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:38,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:38,381 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:38,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:38,396 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:38,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:38,424 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:38,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:38,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239787112] [2021-03-11 14:34:38,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:38,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:38,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977742360] [2021-03-11 14:34:38,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:38,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:38,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:38,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:38,442 INFO L87 Difference]: Start difference. First operand 345 states and 1086 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:38,503 INFO L93 Difference]: Finished difference Result 681 states and 1901 transitions. [2021-03-11 14:34:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:38,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:38,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:38,504 INFO L225 Difference]: With dead ends: 681 [2021-03-11 14:34:38,504 INFO L226 Difference]: Without dead ends: 633 [2021-03-11 14:34:38,504 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-03-11 14:34:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 330. [2021-03-11 14:34:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.185410334346505) internal successors, (1048), 329 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1048 transitions. [2021-03-11 14:34:38,509 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1048 transitions. Word has length 19 [2021-03-11 14:34:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:38,509 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 1048 transitions. [2021-03-11 14:34:38,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1048 transitions. [2021-03-11 14:34:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:38,510 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:38,510 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:38,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-11 14:34:38,510 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:38,510 INFO L82 PathProgramCache]: Analyzing trace with hash 390118730, now seen corresponding path program 133 times [2021-03-11 14:34:38,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:38,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634852229] [2021-03-11 14:34:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:38,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:38,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:38,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:38,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:38,531 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:38,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:38,541 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:38,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:38,566 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:38,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:38,584 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:38,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:38,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634852229] [2021-03-11 14:34:38,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:38,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:38,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636746971] [2021-03-11 14:34:38,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:38,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:38,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:38,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:38,603 INFO L87 Difference]: Start difference. First operand 330 states and 1048 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:38,652 INFO L93 Difference]: Finished difference Result 658 states and 1838 transitions. [2021-03-11 14:34:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:38,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:38,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:38,653 INFO L225 Difference]: With dead ends: 658 [2021-03-11 14:34:38,653 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:34:38,653 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:34:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 340. [2021-03-11 14:34:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.174041297935103) internal successors, (1076), 339 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1076 transitions. [2021-03-11 14:34:38,657 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1076 transitions. Word has length 19 [2021-03-11 14:34:38,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:38,658 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 1076 transitions. [2021-03-11 14:34:38,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1076 transitions. [2021-03-11 14:34:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:38,658 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:38,658 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:38,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-11 14:34:38,658 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:38,658 INFO L82 PathProgramCache]: Analyzing trace with hash -360943364, now seen corresponding path program 134 times [2021-03-11 14:34:38,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:38,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064679462] [2021-03-11 14:34:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:38,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:38,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:38,676 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:38,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:38,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:38,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:38,692 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:38,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:38,717 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:38,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:38,734 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:38,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:38,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064679462] [2021-03-11 14:34:38,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:38,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:38,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335397943] [2021-03-11 14:34:38,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:38,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:38,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:38,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:38,752 INFO L87 Difference]: Start difference. First operand 340 states and 1076 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:38,814 INFO L93 Difference]: Finished difference Result 660 states and 1842 transitions. [2021-03-11 14:34:38,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:38,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:38,815 INFO L225 Difference]: With dead ends: 660 [2021-03-11 14:34:38,815 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:34:38,815 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:34:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 335. [2021-03-11 14:34:38,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 3.179640718562874) internal successors, (1062), 334 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1062 transitions. [2021-03-11 14:34:38,822 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1062 transitions. Word has length 19 [2021-03-11 14:34:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:38,822 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 1062 transitions. [2021-03-11 14:34:38,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1062 transitions. [2021-03-11 14:34:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:38,822 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:38,823 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:38,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-11 14:34:38,823 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:38,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:38,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1210319124, now seen corresponding path program 135 times [2021-03-11 14:34:38,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:38,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237968635] [2021-03-11 14:34:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:38,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:38,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:38,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:38,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:38,844 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:38,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:38,855 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:38,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:38,871 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:38,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:38,894 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:38,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:38,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237968635] [2021-03-11 14:34:38,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:38,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:38,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486515373] [2021-03-11 14:34:38,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:38,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:38,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:38,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:38,916 INFO L87 Difference]: Start difference. First operand 335 states and 1062 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:38,966 INFO L93 Difference]: Finished difference Result 662 states and 1845 transitions. [2021-03-11 14:34:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:38,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:38,968 INFO L225 Difference]: With dead ends: 662 [2021-03-11 14:34:38,968 INFO L226 Difference]: Without dead ends: 631 [2021-03-11 14:34:38,968 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-03-11 14:34:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 341. [2021-03-11 14:34:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 3.1558823529411764) internal successors, (1073), 340 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1073 transitions. [2021-03-11 14:34:38,972 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1073 transitions. Word has length 19 [2021-03-11 14:34:38,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:38,973 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 1073 transitions. [2021-03-11 14:34:38,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:38,973 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1073 transitions. [2021-03-11 14:34:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:38,973 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:38,973 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:38,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-11 14:34:38,973 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2108443422, now seen corresponding path program 136 times [2021-03-11 14:34:38,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:38,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482107172] [2021-03-11 14:34:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:38,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:38,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:38,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:38,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:38,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:38,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:38,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:39,008 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:39,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:39,030 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:39,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:39,056 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:39,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:39,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482107172] [2021-03-11 14:34:39,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:39,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:39,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588443992] [2021-03-11 14:34:39,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:39,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:39,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:39,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:39,079 INFO L87 Difference]: Start difference. First operand 341 states and 1073 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:39,161 INFO L93 Difference]: Finished difference Result 667 states and 1857 transitions. [2021-03-11 14:34:39,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:39,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:39,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:39,162 INFO L225 Difference]: With dead ends: 667 [2021-03-11 14:34:39,162 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:34:39,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:34:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 335. [2021-03-11 14:34:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 3.1646706586826348) internal successors, (1057), 334 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1057 transitions. [2021-03-11 14:34:39,167 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1057 transitions. Word has length 19 [2021-03-11 14:34:39,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:39,167 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 1057 transitions. [2021-03-11 14:34:39,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1057 transitions. [2021-03-11 14:34:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:39,167 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:39,167 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:39,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-11 14:34:39,167 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:39,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:39,167 INFO L82 PathProgramCache]: Analyzing trace with hash -558519542, now seen corresponding path program 137 times [2021-03-11 14:34:39,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:39,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763755114] [2021-03-11 14:34:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:39,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:39,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:39,178 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:39,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:39,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:39,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:39,199 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:39,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:39,213 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:39,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:39,236 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:39,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:39,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763755114] [2021-03-11 14:34:39,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:39,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:39,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610842872] [2021-03-11 14:34:39,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:39,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:39,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:39,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:39,254 INFO L87 Difference]: Start difference. First operand 335 states and 1057 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:39,314 INFO L93 Difference]: Finished difference Result 668 states and 1869 transitions. [2021-03-11 14:34:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:39,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:39,315 INFO L225 Difference]: With dead ends: 668 [2021-03-11 14:34:39,315 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:34:39,315 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:34:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 343. [2021-03-11 14:34:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.1491228070175437) internal successors, (1077), 342 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1077 transitions. [2021-03-11 14:34:39,320 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1077 transitions. Word has length 19 [2021-03-11 14:34:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:39,320 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 1077 transitions. [2021-03-11 14:34:39,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1077 transitions. [2021-03-11 14:34:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:39,321 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:39,321 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:39,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-11 14:34:39,321 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:39,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:39,321 INFO L82 PathProgramCache]: Analyzing trace with hash 300354988, now seen corresponding path program 138 times [2021-03-11 14:34:39,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:39,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023624654] [2021-03-11 14:34:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:39,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:39,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:39,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:39,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:39,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:39,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:39,355 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:39,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:39,368 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:39,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:39,394 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:39,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:39,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023624654] [2021-03-11 14:34:39,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:39,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:39,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989233559] [2021-03-11 14:34:39,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:39,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:39,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:39,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:39,412 INFO L87 Difference]: Start difference. First operand 343 states and 1077 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:39,473 INFO L93 Difference]: Finished difference Result 671 states and 1870 transitions. [2021-03-11 14:34:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:39,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:39,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:39,475 INFO L225 Difference]: With dead ends: 671 [2021-03-11 14:34:39,475 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:34:39,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:39,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:34:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 330. [2021-03-11 14:34:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.1702127659574466) internal successors, (1043), 329 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1043 transitions. [2021-03-11 14:34:39,479 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1043 transitions. Word has length 19 [2021-03-11 14:34:39,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:39,480 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 1043 transitions. [2021-03-11 14:34:39,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1043 transitions. [2021-03-11 14:34:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:39,480 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:39,480 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:39,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-11 14:34:39,480 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:39,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:39,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2132260642, now seen corresponding path program 139 times [2021-03-11 14:34:39,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:39,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223834574] [2021-03-11 14:34:39,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:39,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:39,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:39,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:39,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:39,500 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:39,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:39,512 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:39,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:39,527 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:39,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:39,549 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:39,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:39,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223834574] [2021-03-11 14:34:39,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:39,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:39,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081230123] [2021-03-11 14:34:39,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:39,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:39,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:39,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:39,570 INFO L87 Difference]: Start difference. First operand 330 states and 1043 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:39,632 INFO L93 Difference]: Finished difference Result 702 states and 2000 transitions. [2021-03-11 14:34:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:39,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:39,633 INFO L225 Difference]: With dead ends: 702 [2021-03-11 14:34:39,633 INFO L226 Difference]: Without dead ends: 662 [2021-03-11 14:34:39,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-03-11 14:34:39,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 347. [2021-03-11 14:34:39,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.1820809248554913) internal successors, (1101), 346 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1101 transitions. [2021-03-11 14:34:39,639 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1101 transitions. Word has length 19 [2021-03-11 14:34:39,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:39,639 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 1101 transitions. [2021-03-11 14:34:39,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1101 transitions. [2021-03-11 14:34:39,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:39,639 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:39,639 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:39,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-11 14:34:39,639 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:39,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:39,643 INFO L82 PathProgramCache]: Analyzing trace with hash -2132855288, now seen corresponding path program 140 times [2021-03-11 14:34:39,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:39,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144747038] [2021-03-11 14:34:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:39,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:39,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:39,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:39,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:39,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:39,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:39,672 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:39,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:39,685 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:39,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:39,703 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:39,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:39,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144747038] [2021-03-11 14:34:39,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:39,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:39,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744459573] [2021-03-11 14:34:39,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:39,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:39,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:39,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:39,721 INFO L87 Difference]: Start difference. First operand 347 states and 1101 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:39,785 INFO L93 Difference]: Finished difference Result 695 states and 1970 transitions. [2021-03-11 14:34:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:39,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:39,786 INFO L225 Difference]: With dead ends: 695 [2021-03-11 14:34:39,787 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:34:39,787 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:34:39,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 338. [2021-03-11 14:34:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.178041543026706) internal successors, (1071), 337 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1071 transitions. [2021-03-11 14:34:39,793 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1071 transitions. Word has length 19 [2021-03-11 14:34:39,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:39,794 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 1071 transitions. [2021-03-11 14:34:39,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,794 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1071 transitions. [2021-03-11 14:34:39,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:39,794 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:39,794 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:39,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-11 14:34:39,794 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:39,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1276953988, now seen corresponding path program 141 times [2021-03-11 14:34:39,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:39,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008094108] [2021-03-11 14:34:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:39,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:39,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:39,807 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:39,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:39,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:39,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:39,826 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:39,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:39,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:39,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:39,865 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:39,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:39,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008094108] [2021-03-11 14:34:39,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:39,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:39,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769004604] [2021-03-11 14:34:39,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:39,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:39,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:39,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:39,883 INFO L87 Difference]: Start difference. First operand 338 states and 1071 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:39,942 INFO L93 Difference]: Finished difference Result 708 states and 2013 transitions. [2021-03-11 14:34:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:39,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:39,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:39,944 INFO L225 Difference]: With dead ends: 708 [2021-03-11 14:34:39,944 INFO L226 Difference]: Without dead ends: 668 [2021-03-11 14:34:39,944 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-03-11 14:34:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 350. [2021-03-11 14:34:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 3.157593123209169) internal successors, (1102), 349 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1102 transitions. [2021-03-11 14:34:39,949 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1102 transitions. Word has length 19 [2021-03-11 14:34:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:39,949 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 1102 transitions. [2021-03-11 14:34:39,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1102 transitions. [2021-03-11 14:34:39,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:39,950 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:39,950 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:39,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-11 14:34:39,950 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:39,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:39,950 INFO L82 PathProgramCache]: Analyzing trace with hash -418674104, now seen corresponding path program 142 times [2021-03-11 14:34:39,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:39,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577475875] [2021-03-11 14:34:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:39,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:39,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:39,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:39,960 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:39,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:39,966 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:39,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:39,976 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:39,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:39,993 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:39,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:40,016 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:40,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:40,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577475875] [2021-03-11 14:34:40,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:40,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:40,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223965437] [2021-03-11 14:34:40,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:40,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:40,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:40,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:40,036 INFO L87 Difference]: Start difference. First operand 350 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:40,101 INFO L93 Difference]: Finished difference Result 704 states and 1989 transitions. [2021-03-11 14:34:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:40,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:40,103 INFO L225 Difference]: With dead ends: 704 [2021-03-11 14:34:40,103 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:34:40,103 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:34:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 338. [2021-03-11 14:34:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.1543026706231454) internal successors, (1063), 337 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1063 transitions. [2021-03-11 14:34:40,107 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1063 transitions. Word has length 19 [2021-03-11 14:34:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:40,108 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 1063 transitions. [2021-03-11 14:34:40,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,108 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1063 transitions. [2021-03-11 14:34:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:40,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:40,108 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:40,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-11 14:34:40,108 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:40,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1295982660, now seen corresponding path program 143 times [2021-03-11 14:34:40,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:40,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914722932] [2021-03-11 14:34:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:40,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:40,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:40,120 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:40,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:40,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:40,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:40,136 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:40,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:40,150 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:40,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:40,168 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:40,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:40,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914722932] [2021-03-11 14:34:40,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:40,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:40,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774158928] [2021-03-11 14:34:40,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:40,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:40,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:40,186 INFO L87 Difference]: Start difference. First operand 338 states and 1063 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:40,276 INFO L93 Difference]: Finished difference Result 690 states and 1948 transitions. [2021-03-11 14:34:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:40,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:40,277 INFO L225 Difference]: With dead ends: 690 [2021-03-11 14:34:40,277 INFO L226 Difference]: Without dead ends: 657 [2021-03-11 14:34:40,277 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:40,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-03-11 14:34:40,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 346. [2021-03-11 14:34:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.139130434782609) internal successors, (1083), 345 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1083 transitions. [2021-03-11 14:34:40,284 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1083 transitions. Word has length 19 [2021-03-11 14:34:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:40,284 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 1083 transitions. [2021-03-11 14:34:40,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,284 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1083 transitions. [2021-03-11 14:34:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:40,285 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:40,285 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:40,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-11 14:34:40,285 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:40,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:40,285 INFO L82 PathProgramCache]: Analyzing trace with hash -437108130, now seen corresponding path program 144 times [2021-03-11 14:34:40,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:40,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386130482] [2021-03-11 14:34:40,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:40,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:40,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:40,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:40,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:40,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:40,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:40,326 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:40,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:40,345 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:40,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:40,368 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:40,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:40,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386130482] [2021-03-11 14:34:40,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:40,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:40,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69534666] [2021-03-11 14:34:40,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:40,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:40,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:40,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:40,386 INFO L87 Difference]: Start difference. First operand 346 states and 1083 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:40,454 INFO L93 Difference]: Finished difference Result 693 states and 1949 transitions. [2021-03-11 14:34:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:40,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:40,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:40,455 INFO L225 Difference]: With dead ends: 693 [2021-03-11 14:34:40,455 INFO L226 Difference]: Without dead ends: 633 [2021-03-11 14:34:40,455 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-03-11 14:34:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 322. [2021-03-11 14:34:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 3.1931464174454827) internal successors, (1025), 321 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1025 transitions. [2021-03-11 14:34:40,460 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1025 transitions. Word has length 19 [2021-03-11 14:34:40,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:40,460 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 1025 transitions. [2021-03-11 14:34:40,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,460 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1025 transitions. [2021-03-11 14:34:40,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:40,461 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:40,461 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:40,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-11 14:34:40,461 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:40,461 INFO L82 PathProgramCache]: Analyzing trace with hash -570692880, now seen corresponding path program 145 times [2021-03-11 14:34:40,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:40,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611827203] [2021-03-11 14:34:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:40,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:40,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:40,471 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:40,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:40,484 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:40,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:40,495 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:40,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:40,509 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:40,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:40,533 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:40,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:40,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611827203] [2021-03-11 14:34:40,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:40,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:40,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172237716] [2021-03-11 14:34:40,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:40,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:40,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:40,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:40,558 INFO L87 Difference]: Start difference. First operand 322 states and 1025 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:40,616 INFO L93 Difference]: Finished difference Result 656 states and 1808 transitions. [2021-03-11 14:34:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:40,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:40,617 INFO L225 Difference]: With dead ends: 656 [2021-03-11 14:34:40,617 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:34:40,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:40,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:34:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 343. [2021-03-11 14:34:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.1666666666666665) internal successors, (1083), 342 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1083 transitions. [2021-03-11 14:34:40,622 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1083 transitions. Word has length 19 [2021-03-11 14:34:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:40,622 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 1083 transitions. [2021-03-11 14:34:40,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1083 transitions. [2021-03-11 14:34:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:40,623 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:40,623 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:40,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-11 14:34:40,623 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:40,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:40,623 INFO L82 PathProgramCache]: Analyzing trace with hash -196041694, now seen corresponding path program 146 times [2021-03-11 14:34:40,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:40,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440453311] [2021-03-11 14:34:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:40,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:40,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:40,633 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:40,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:40,646 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:40,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:40,656 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:40,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:40,670 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:40,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:40,693 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:40,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:40,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440453311] [2021-03-11 14:34:40,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:40,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:40,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178486503] [2021-03-11 14:34:40,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:40,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:40,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:40,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:40,711 INFO L87 Difference]: Start difference. First operand 343 states and 1083 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:40,784 INFO L93 Difference]: Finished difference Result 665 states and 1831 transitions. [2021-03-11 14:34:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:40,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:40,785 INFO L225 Difference]: With dead ends: 665 [2021-03-11 14:34:40,785 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:34:40,785 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:34:40,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 335. [2021-03-11 14:34:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 3.179640718562874) internal successors, (1062), 334 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1062 transitions. [2021-03-11 14:34:40,792 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1062 transitions. Word has length 19 [2021-03-11 14:34:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:40,792 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 1062 transitions. [2021-03-11 14:34:40,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1062 transitions. [2021-03-11 14:34:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:40,793 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:40,793 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:40,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-11 14:34:40,793 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash 610696874, now seen corresponding path program 147 times [2021-03-11 14:34:40,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:40,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642693208] [2021-03-11 14:34:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:40,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:40,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:40,807 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:40,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:40,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:40,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:40,839 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:40,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:40,858 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:40,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:40,883 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:40,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:40,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642693208] [2021-03-11 14:34:40,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:40,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:40,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899952701] [2021-03-11 14:34:40,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:40,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:40,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:40,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:40,910 INFO L87 Difference]: Start difference. First operand 335 states and 1062 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:40,966 INFO L93 Difference]: Finished difference Result 650 states and 1785 transitions. [2021-03-11 14:34:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:40,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:40,972 INFO L225 Difference]: With dead ends: 650 [2021-03-11 14:34:40,972 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:34:40,972 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:34:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 341. [2021-03-11 14:34:40,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 3.1558823529411764) internal successors, (1073), 340 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1073 transitions. [2021-03-11 14:34:40,977 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1073 transitions. Word has length 19 [2021-03-11 14:34:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:40,977 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 1073 transitions. [2021-03-11 14:34:40,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1073 transitions. [2021-03-11 14:34:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:40,978 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:40,978 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:40,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-11 14:34:40,978 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:40,978 INFO L82 PathProgramCache]: Analyzing trace with hash -365507876, now seen corresponding path program 148 times [2021-03-11 14:34:40,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:40,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326367543] [2021-03-11 14:34:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:40,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:40,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:40,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:40,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:40,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:41,003 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:41,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:41,014 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:41,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:41,028 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:41,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:41,047 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:41,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:41,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326367543] [2021-03-11 14:34:41,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:41,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:41,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838364370] [2021-03-11 14:34:41,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:41,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:41,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:41,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:41,066 INFO L87 Difference]: Start difference. First operand 341 states and 1073 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:41,127 INFO L93 Difference]: Finished difference Result 655 states and 1797 transitions. [2021-03-11 14:34:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:41,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:41,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:41,129 INFO L225 Difference]: With dead ends: 655 [2021-03-11 14:34:41,129 INFO L226 Difference]: Without dead ends: 613 [2021-03-11 14:34:41,129 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-11 14:34:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 335. [2021-03-11 14:34:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 3.161676646706587) internal successors, (1056), 334 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1056 transitions. [2021-03-11 14:34:41,134 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1056 transitions. Word has length 19 [2021-03-11 14:34:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:41,134 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 1056 transitions. [2021-03-11 14:34:41,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1056 transitions. [2021-03-11 14:34:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:41,134 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:41,134 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:41,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-11 14:34:41,134 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:41,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1800464414, now seen corresponding path program 149 times [2021-03-11 14:34:41,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:41,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555313656] [2021-03-11 14:34:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:41,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:41,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:41,147 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:41,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:41,162 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:41,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:41,175 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:41,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:41,192 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:41,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:41,216 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:41,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:41,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555313656] [2021-03-11 14:34:41,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:41,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:41,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382469959] [2021-03-11 14:34:41,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:41,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:41,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:41,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:41,239 INFO L87 Difference]: Start difference. First operand 335 states and 1056 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:41,307 INFO L93 Difference]: Finished difference Result 674 states and 1865 transitions. [2021-03-11 14:34:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:41,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:41,308 INFO L225 Difference]: With dead ends: 674 [2021-03-11 14:34:41,308 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:34:41,308 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:34:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 347. [2021-03-11 14:34:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.1416184971098264) internal successors, (1087), 346 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1087 transitions. [2021-03-11 14:34:41,316 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1087 transitions. Word has length 19 [2021-03-11 14:34:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:41,316 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 1087 transitions. [2021-03-11 14:34:41,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1087 transitions. [2021-03-11 14:34:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:41,317 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:41,317 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:41,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-11 14:34:41,317 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:41,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:41,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1636222998, now seen corresponding path program 150 times [2021-03-11 14:34:41,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:41,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479305405] [2021-03-11 14:34:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:41,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:41,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:41,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:41,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:41,345 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:41,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:41,356 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:41,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:41,371 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:41,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:41,389 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:41,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:41,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479305405] [2021-03-11 14:34:41,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:41,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:41,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60553188] [2021-03-11 14:34:41,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:41,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:41,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:41,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:41,409 INFO L87 Difference]: Start difference. First operand 347 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:41,477 INFO L93 Difference]: Finished difference Result 670 states and 1841 transitions. [2021-03-11 14:34:41,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:41,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:41,478 INFO L225 Difference]: With dead ends: 670 [2021-03-11 14:34:41,478 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:34:41,478 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:41,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:34:41,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 327. [2021-03-11 14:34:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 3.184049079754601) internal successors, (1038), 326 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 1038 transitions. [2021-03-11 14:34:41,486 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 1038 transitions. Word has length 19 [2021-03-11 14:34:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:41,486 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 1038 transitions. [2021-03-11 14:34:41,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 1038 transitions. [2021-03-11 14:34:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:41,487 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:41,487 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:41,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-11 14:34:41,487 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:41,487 INFO L82 PathProgramCache]: Analyzing trace with hash 807035554, now seen corresponding path program 151 times [2021-03-11 14:34:41,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:41,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506944523] [2021-03-11 14:34:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:41,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:41,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:41,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:41,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:41,516 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:41,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:41,552 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:41,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:41,568 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:41,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:41,587 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:41,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:41,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506944523] [2021-03-11 14:34:41,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:41,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:41,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635139519] [2021-03-11 14:34:41,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:41,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:41,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:41,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:41,606 INFO L87 Difference]: Start difference. First operand 327 states and 1038 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:41,651 INFO L93 Difference]: Finished difference Result 629 states and 1714 transitions. [2021-03-11 14:34:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:41,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:41,653 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:34:41,653 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:34:41,653 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:34:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 339. [2021-03-11 14:34:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 3.1479289940828403) internal successors, (1064), 338 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 1064 transitions. [2021-03-11 14:34:41,657 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 1064 transitions. Word has length 19 [2021-03-11 14:34:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:41,657 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 1064 transitions. [2021-03-11 14:34:41,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 1064 transitions. [2021-03-11 14:34:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:41,658 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:41,658 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:41,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-11 14:34:41,658 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:41,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1181686740, now seen corresponding path program 152 times [2021-03-11 14:34:41,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:41,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167660998] [2021-03-11 14:34:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:41,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:41,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:41,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:41,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:41,681 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:41,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:41,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:41,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:41,711 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:41,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:41,730 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:41,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:41,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167660998] [2021-03-11 14:34:41,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:41,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:41,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690076934] [2021-03-11 14:34:41,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:41,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:41,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:41,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:41,749 INFO L87 Difference]: Start difference. First operand 339 states and 1064 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:41,811 INFO L93 Difference]: Finished difference Result 638 states and 1737 transitions. [2021-03-11 14:34:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:41,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:41,813 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:34:41,813 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:34:41,813 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:34:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 331. [2021-03-11 14:34:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 3.16969696969697) internal successors, (1046), 330 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1046 transitions. [2021-03-11 14:34:41,817 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1046 transitions. Word has length 19 [2021-03-11 14:34:41,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:41,817 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 1046 transitions. [2021-03-11 14:34:41,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1046 transitions. [2021-03-11 14:34:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:41,818 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:41,818 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:41,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-03-11 14:34:41,818 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:41,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1337232860, now seen corresponding path program 153 times [2021-03-11 14:34:41,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:41,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431640370] [2021-03-11 14:34:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:41,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:41,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:41,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:41,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:41,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:41,851 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:41,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:41,869 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:41,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:41,893 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:41,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:41,916 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:41,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:41,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431640370] [2021-03-11 14:34:41,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:41,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:41,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676289862] [2021-03-11 14:34:41,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:41,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:41,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:41,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:41,938 INFO L87 Difference]: Start difference. First operand 331 states and 1046 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:41,996 INFO L93 Difference]: Finished difference Result 606 states and 1650 transitions. [2021-03-11 14:34:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:41,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:41,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:41,997 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:34:41,997 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:34:41,997 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:34:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 334. [2021-03-11 14:34:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 3.1531531531531534) internal successors, (1050), 333 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1050 transitions. [2021-03-11 14:34:42,004 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 1050 transitions. Word has length 19 [2021-03-11 14:34:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:42,004 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 1050 transitions. [2021-03-11 14:34:42,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 1050 transitions. [2021-03-11 14:34:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:42,004 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:42,004 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:42,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-03-11 14:34:42,005 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:42,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:42,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1693132272, now seen corresponding path program 1 times [2021-03-11 14:34:42,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:42,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446939297] [2021-03-11 14:34:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:42,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:42,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:34:42,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:42,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446939297] [2021-03-11 14:34:42,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:42,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:34:42,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165220229] [2021-03-11 14:34:42,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:34:42,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:42,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:34:42,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:42,022 INFO L87 Difference]: Start difference. First operand 334 states and 1050 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:42,027 INFO L93 Difference]: Finished difference Result 220 states and 662 transitions. [2021-03-11 14:34:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:34:42,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:42,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:42,028 INFO L225 Difference]: With dead ends: 220 [2021-03-11 14:34:42,028 INFO L226 Difference]: Without dead ends: 220 [2021-03-11 14:34:42,028 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-03-11 14:34:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-03-11 14:34:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.0228310502283104) internal successors, (662), 219 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 662 transitions. [2021-03-11 14:34:42,032 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 662 transitions. Word has length 19 [2021-03-11 14:34:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:42,032 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 662 transitions. [2021-03-11 14:34:42,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 662 transitions. [2021-03-11 14:34:42,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:42,033 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:42,033 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:42,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-03-11 14:34:42,034 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:42,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1596291086, now seen corresponding path program 154 times [2021-03-11 14:34:42,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:42,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138247735] [2021-03-11 14:34:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:42,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:42,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:42,058 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:42,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:42,072 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:42,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:42,088 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:42,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:42,111 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:42,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:42,130 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:42,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:42,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138247735] [2021-03-11 14:34:42,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:42,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:42,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547735946] [2021-03-11 14:34:42,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:42,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:42,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:42,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:42,149 INFO L87 Difference]: Start difference. First operand 220 states and 662 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:42,203 INFO L93 Difference]: Finished difference Result 336 states and 884 transitions. [2021-03-11 14:34:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:42,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:42,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:42,204 INFO L225 Difference]: With dead ends: 336 [2021-03-11 14:34:42,204 INFO L226 Difference]: Without dead ends: 323 [2021-03-11 14:34:42,204 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:42,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-03-11 14:34:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 217. [2021-03-11 14:34:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0324074074074074) internal successors, (655), 216 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 655 transitions. [2021-03-11 14:34:42,207 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 655 transitions. Word has length 19 [2021-03-11 14:34:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:42,207 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 655 transitions. [2021-03-11 14:34:42,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 655 transitions. [2021-03-11 14:34:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:42,207 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:42,207 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:42,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-03-11 14:34:42,207 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:42,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:42,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1035428716, now seen corresponding path program 155 times [2021-03-11 14:34:42,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:42,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945203778] [2021-03-11 14:34:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:42,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:42,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:42,219 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:42,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:42,232 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:42,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:42,248 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:42,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:42,269 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:42,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:42,288 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:42,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:42,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945203778] [2021-03-11 14:34:42,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:42,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:42,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491224746] [2021-03-11 14:34:42,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:42,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:42,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:42,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:42,306 INFO L87 Difference]: Start difference. First operand 217 states and 655 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:42,374 INFO L93 Difference]: Finished difference Result 348 states and 900 transitions. [2021-03-11 14:34:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:42,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:42,375 INFO L225 Difference]: With dead ends: 348 [2021-03-11 14:34:42,375 INFO L226 Difference]: Without dead ends: 334 [2021-03-11 14:34:42,375 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-03-11 14:34:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 219. [2021-03-11 14:34:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.018348623853211) internal successors, (658), 218 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 658 transitions. [2021-03-11 14:34:42,378 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 658 transitions. Word has length 19 [2021-03-11 14:34:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:42,378 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 658 transitions. [2021-03-11 14:34:42,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 658 transitions. [2021-03-11 14:34:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:42,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:42,378 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:42,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-03-11 14:34:42,378 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:42,378 INFO L82 PathProgramCache]: Analyzing trace with hash 84701114, now seen corresponding path program 156 times [2021-03-11 14:34:42,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:42,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513143533] [2021-03-11 14:34:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:42,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:42,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:42,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:42,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:42,406 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:42,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:42,424 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:42,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:42,449 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:42,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:42,470 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:42,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:42,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513143533] [2021-03-11 14:34:42,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:42,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:42,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803003119] [2021-03-11 14:34:42,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:42,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:42,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:42,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:42,489 INFO L87 Difference]: Start difference. First operand 219 states and 658 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:42,536 INFO L93 Difference]: Finished difference Result 335 states and 880 transitions. [2021-03-11 14:34:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:42,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:42,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:42,536 INFO L225 Difference]: With dead ends: 335 [2021-03-11 14:34:42,536 INFO L226 Difference]: Without dead ends: 319 [2021-03-11 14:34:42,537 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-03-11 14:34:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 213. [2021-03-11 14:34:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 3.047169811320755) internal successors, (646), 212 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 646 transitions. [2021-03-11 14:34:42,539 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 646 transitions. Word has length 19 [2021-03-11 14:34:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:42,540 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 646 transitions. [2021-03-11 14:34:42,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 646 transitions. [2021-03-11 14:34:42,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:42,540 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:42,540 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:42,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-03-11 14:34:42,540 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash -694390430, now seen corresponding path program 157 times [2021-03-11 14:34:42,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:42,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929803301] [2021-03-11 14:34:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:42,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:42,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:42,551 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:42,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:42,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:42,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:42,581 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:42,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:42,601 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:42,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:42,621 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:42,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:42,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929803301] [2021-03-11 14:34:42,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:42,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:42,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036911391] [2021-03-11 14:34:42,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:42,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:42,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:42,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:42,643 INFO L87 Difference]: Start difference. First operand 213 states and 646 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:42,694 INFO L93 Difference]: Finished difference Result 363 states and 936 transitions. [2021-03-11 14:34:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:42,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:42,695 INFO L225 Difference]: With dead ends: 363 [2021-03-11 14:34:42,695 INFO L226 Difference]: Without dead ends: 347 [2021-03-11 14:34:42,695 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-03-11 14:34:42,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 219. [2021-03-11 14:34:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.0275229357798166) internal successors, (660), 218 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 660 transitions. [2021-03-11 14:34:42,698 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 660 transitions. Word has length 19 [2021-03-11 14:34:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:42,698 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 660 transitions. [2021-03-11 14:34:42,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 660 transitions. [2021-03-11 14:34:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:42,698 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:42,699 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:42,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-03-11 14:34:42,699 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:42,699 INFO L82 PathProgramCache]: Analyzing trace with hash -435332204, now seen corresponding path program 158 times [2021-03-11 14:34:42,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:42,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299587485] [2021-03-11 14:34:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:42,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:42,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:42,713 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:42,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:42,726 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:42,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:42,744 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:42,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:42,764 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:42,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:42,782 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:42,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:42,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299587485] [2021-03-11 14:34:42,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:42,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:42,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924389538] [2021-03-11 14:34:42,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:42,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:42,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:42,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:42,801 INFO L87 Difference]: Start difference. First operand 219 states and 660 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:42,849 INFO L93 Difference]: Finished difference Result 357 states and 921 transitions. [2021-03-11 14:34:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:42,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:42,849 INFO L225 Difference]: With dead ends: 357 [2021-03-11 14:34:42,849 INFO L226 Difference]: Without dead ends: 344 [2021-03-11 14:34:42,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:42,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-03-11 14:34:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 216. [2021-03-11 14:34:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0372093023255813) internal successors, (653), 215 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 653 transitions. [2021-03-11 14:34:42,853 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 653 transitions. Word has length 19 [2021-03-11 14:34:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:42,853 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 653 transitions. [2021-03-11 14:34:42,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 653 transitions. [2021-03-11 14:34:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:42,853 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:42,853 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:42,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-03-11 14:34:42,853 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:42,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:42,853 INFO L82 PathProgramCache]: Analyzing trace with hash 399701158, now seen corresponding path program 159 times [2021-03-11 14:34:42,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:42,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728847410] [2021-03-11 14:34:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:42,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:42,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:42,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:42,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:42,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:42,877 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:42,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:42,895 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:42,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:42,909 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:42,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:42,928 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:42,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728847410] [2021-03-11 14:34:42,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:42,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:42,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86451495] [2021-03-11 14:34:42,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:42,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:42,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:42,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:42,946 INFO L87 Difference]: Start difference. First operand 216 states and 653 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:42,992 INFO L93 Difference]: Finished difference Result 363 states and 933 transitions. [2021-03-11 14:34:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:42,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:42,993 INFO L225 Difference]: With dead ends: 363 [2021-03-11 14:34:42,993 INFO L226 Difference]: Without dead ends: 347 [2021-03-11 14:34:42,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-03-11 14:34:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 222. [2021-03-11 14:34:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 3.004524886877828) internal successors, (664), 221 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 664 transitions. [2021-03-11 14:34:42,996 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 664 transitions. Word has length 19 [2021-03-11 14:34:42,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:42,996 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 664 transitions. [2021-03-11 14:34:42,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:42,996 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 664 transitions. [2021-03-11 14:34:42,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:42,997 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:42,997 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:42,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-03-11 14:34:42,997 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:42,997 INFO L82 PathProgramCache]: Analyzing trace with hash -576503592, now seen corresponding path program 160 times [2021-03-11 14:34:42,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:42,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487084289] [2021-03-11 14:34:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:43,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:43,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:43,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:43,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:43,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:43,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:43,038 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:43,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:43,063 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:43,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:43,084 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:43,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:43,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487084289] [2021-03-11 14:34:43,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:43,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:43,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911633530] [2021-03-11 14:34:43,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:43,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:43,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:43,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:43,102 INFO L87 Difference]: Start difference. First operand 222 states and 664 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:43,161 INFO L93 Difference]: Finished difference Result 360 states and 922 transitions. [2021-03-11 14:34:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:43,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:43,162 INFO L225 Difference]: With dead ends: 360 [2021-03-11 14:34:43,162 INFO L226 Difference]: Without dead ends: 341 [2021-03-11 14:34:43,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:43,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-03-11 14:34:43,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 216. [2021-03-11 14:34:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0232558139534884) internal successors, (650), 215 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 650 transitions. [2021-03-11 14:34:43,165 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 650 transitions. Word has length 19 [2021-03-11 14:34:43,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:43,165 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 650 transitions. [2021-03-11 14:34:43,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 650 transitions. [2021-03-11 14:34:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:43,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:43,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:43,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-03-11 14:34:43,166 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:43,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:43,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1883903552, now seen corresponding path program 161 times [2021-03-11 14:34:43,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:43,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875763573] [2021-03-11 14:34:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:43,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:43,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:43,178 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:43,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:43,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:43,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:43,208 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:43,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:43,233 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:43,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:43,251 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:43,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:43,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875763573] [2021-03-11 14:34:43,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:43,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:43,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118532409] [2021-03-11 14:34:43,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:43,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:43,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:43,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:43,269 INFO L87 Difference]: Start difference. First operand 216 states and 650 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:43,317 INFO L93 Difference]: Finished difference Result 347 states and 894 transitions. [2021-03-11 14:34:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:43,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:43,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:43,318 INFO L225 Difference]: With dead ends: 347 [2021-03-11 14:34:43,318 INFO L226 Difference]: Without dead ends: 337 [2021-03-11 14:34:43,318 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-03-11 14:34:43,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 218. [2021-03-11 14:34:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 3.0092165898617513) internal successors, (653), 217 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 653 transitions. [2021-03-11 14:34:43,322 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 653 transitions. Word has length 19 [2021-03-11 14:34:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:43,322 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 653 transitions. [2021-03-11 14:34:43,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 653 transitions. [2021-03-11 14:34:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:43,322 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:43,323 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:43,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-03-11 14:34:43,323 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:43,323 INFO L82 PathProgramCache]: Analyzing trace with hash -394498556, now seen corresponding path program 162 times [2021-03-11 14:34:43,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:43,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266612778] [2021-03-11 14:34:43,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:43,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:43,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:43,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:43,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:43,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:43,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:43,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:43,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:43,395 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:43,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:43,413 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:43,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:43,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266612778] [2021-03-11 14:34:43,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:43,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:43,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700237743] [2021-03-11 14:34:43,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:43,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:43,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:43,431 INFO L87 Difference]: Start difference. First operand 218 states and 653 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:43,492 INFO L93 Difference]: Finished difference Result 345 states and 889 transitions. [2021-03-11 14:34:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:43,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:43,493 INFO L225 Difference]: With dead ends: 345 [2021-03-11 14:34:43,493 INFO L226 Difference]: Without dead ends: 327 [2021-03-11 14:34:43,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-03-11 14:34:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 213. [2021-03-11 14:34:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 3.0330188679245285) internal successors, (643), 212 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 643 transitions. [2021-03-11 14:34:43,496 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 643 transitions. Word has length 19 [2021-03-11 14:34:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:43,496 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 643 transitions. [2021-03-11 14:34:43,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 643 transitions. [2021-03-11 14:34:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:43,497 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:43,497 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:43,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-03-11 14:34:43,497 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:43,497 INFO L82 PathProgramCache]: Analyzing trace with hash 600573882, now seen corresponding path program 163 times [2021-03-11 14:34:43,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:43,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989191284] [2021-03-11 14:34:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:43,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:43,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:43,509 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:43,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:43,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:43,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:43,547 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:43,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:43,575 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:43,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:43,594 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:43,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:43,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989191284] [2021-03-11 14:34:43,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:43,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:43,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523276970] [2021-03-11 14:34:43,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:43,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:43,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:43,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:43,612 INFO L87 Difference]: Start difference. First operand 213 states and 643 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:43,670 INFO L93 Difference]: Finished difference Result 353 states and 915 transitions. [2021-03-11 14:34:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:43,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:43,670 INFO L225 Difference]: With dead ends: 353 [2021-03-11 14:34:43,670 INFO L226 Difference]: Without dead ends: 339 [2021-03-11 14:34:43,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-03-11 14:34:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 217. [2021-03-11 14:34:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0231481481481484) internal successors, (653), 216 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 653 transitions. [2021-03-11 14:34:43,674 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 653 transitions. Word has length 19 [2021-03-11 14:34:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:43,674 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 653 transitions. [2021-03-11 14:34:43,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 653 transitions. [2021-03-11 14:34:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:43,674 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:43,674 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:43,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-03-11 14:34:43,674 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:43,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:43,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1720703712, now seen corresponding path program 164 times [2021-03-11 14:34:43,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:43,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12187083] [2021-03-11 14:34:43,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:43,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:43,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:43,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:43,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:43,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:43,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:43,715 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:43,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:43,736 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:43,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:43,754 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:43,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:43,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12187083] [2021-03-11 14:34:43,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:43,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:43,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949092921] [2021-03-11 14:34:43,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:43,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:43,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:43,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:43,777 INFO L87 Difference]: Start difference. First operand 217 states and 653 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:43,830 INFO L93 Difference]: Finished difference Result 349 states and 904 transitions. [2021-03-11 14:34:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:43,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:43,831 INFO L225 Difference]: With dead ends: 349 [2021-03-11 14:34:43,831 INFO L226 Difference]: Without dead ends: 337 [2021-03-11 14:34:43,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-03-11 14:34:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 215. [2021-03-11 14:34:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.02803738317757) internal successors, (648), 214 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 648 transitions. [2021-03-11 14:34:43,834 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 648 transitions. Word has length 19 [2021-03-11 14:34:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:43,834 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 648 transitions. [2021-03-11 14:34:43,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 648 transitions. [2021-03-11 14:34:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:43,834 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:43,834 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:43,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-03-11 14:34:43,834 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:43,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:43,834 INFO L82 PathProgramCache]: Analyzing trace with hash -472511498, now seen corresponding path program 165 times [2021-03-11 14:34:43,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:43,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842448836] [2021-03-11 14:34:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:43,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:43,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:43,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:43,847 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:43,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:43,861 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:43,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:43,882 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:43,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:43,896 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:43,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:43,915 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:43,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:43,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842448836] [2021-03-11 14:34:43,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:43,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:43,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408873860] [2021-03-11 14:34:43,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:43,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:43,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:43,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:43,933 INFO L87 Difference]: Start difference. First operand 215 states and 648 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:43,994 INFO L93 Difference]: Finished difference Result 354 states and 915 transitions. [2021-03-11 14:34:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:43,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:43,995 INFO L225 Difference]: With dead ends: 354 [2021-03-11 14:34:43,995 INFO L226 Difference]: Without dead ends: 340 [2021-03-11 14:34:43,995 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-03-11 14:34:43,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 220. [2021-03-11 14:34:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.0045662100456623) internal successors, (658), 219 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 658 transitions. [2021-03-11 14:34:43,998 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 658 transitions. Word has length 19 [2021-03-11 14:34:43,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:43,998 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 658 transitions. [2021-03-11 14:34:43,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:43,999 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 658 transitions. [2021-03-11 14:34:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:43,999 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:43,999 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:43,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-03-11 14:34:43,999 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:43,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:43,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1114568416, now seen corresponding path program 166 times [2021-03-11 14:34:43,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:43,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477011614] [2021-03-11 14:34:43,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:44,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:44,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:44,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:44,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:44,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:44,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:44,051 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:44,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:44,065 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:44,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:44,083 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:44,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:44,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477011614] [2021-03-11 14:34:44,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:44,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:44,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274747157] [2021-03-11 14:34:44,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:44,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:44,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:44,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:44,103 INFO L87 Difference]: Start difference. First operand 220 states and 658 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:44,169 INFO L93 Difference]: Finished difference Result 353 states and 908 transitions. [2021-03-11 14:34:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:44,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:44,169 INFO L225 Difference]: With dead ends: 353 [2021-03-11 14:34:44,169 INFO L226 Difference]: Without dead ends: 335 [2021-03-11 14:34:44,169 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:44,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-03-11 14:34:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 215. [2021-03-11 14:34:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0186915887850465) internal successors, (646), 214 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 646 transitions. [2021-03-11 14:34:44,172 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 646 transitions. Word has length 19 [2021-03-11 14:34:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:44,173 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 646 transitions. [2021-03-11 14:34:44,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 646 transitions. [2021-03-11 14:34:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:44,173 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:44,173 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:44,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-03-11 14:34:44,173 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:44,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:44,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1498552428, now seen corresponding path program 167 times [2021-03-11 14:34:44,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:44,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436796732] [2021-03-11 14:34:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:44,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:44,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:44,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:44,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:44,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:44,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:44,214 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:44,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:44,238 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:44,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:44,257 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:44,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:44,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436796732] [2021-03-11 14:34:44,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:44,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:44,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159102010] [2021-03-11 14:34:44,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:44,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:44,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:44,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:44,275 INFO L87 Difference]: Start difference. First operand 215 states and 646 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:44,320 INFO L93 Difference]: Finished difference Result 343 states and 885 transitions. [2021-03-11 14:34:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:44,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:44,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:44,321 INFO L225 Difference]: With dead ends: 343 [2021-03-11 14:34:44,321 INFO L226 Difference]: Without dead ends: 333 [2021-03-11 14:34:44,321 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-03-11 14:34:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 217. [2021-03-11 14:34:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0046296296296298) internal successors, (649), 216 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 649 transitions. [2021-03-11 14:34:44,324 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 649 transitions. Word has length 19 [2021-03-11 14:34:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:44,324 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 649 transitions. [2021-03-11 14:34:44,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 649 transitions. [2021-03-11 14:34:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:44,325 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:44,325 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:44,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-03-11 14:34:44,325 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:44,325 INFO L82 PathProgramCache]: Analyzing trace with hash -9147432, now seen corresponding path program 168 times [2021-03-11 14:34:44,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:44,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747756598] [2021-03-11 14:34:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:44,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:44,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:44,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:44,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:44,349 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:44,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:44,367 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:44,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:44,391 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:44,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:44,409 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:44,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:44,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747756598] [2021-03-11 14:34:44,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:44,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:44,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689549427] [2021-03-11 14:34:44,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:44,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:44,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:44,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:44,427 INFO L87 Difference]: Start difference. First operand 217 states and 649 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:44,489 INFO L93 Difference]: Finished difference Result 341 states and 880 transitions. [2021-03-11 14:34:44,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:44,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:44,489 INFO L225 Difference]: With dead ends: 341 [2021-03-11 14:34:44,489 INFO L226 Difference]: Without dead ends: 319 [2021-03-11 14:34:44,490 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-03-11 14:34:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 208. [2021-03-11 14:34:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 3.0531400966183573) internal successors, (632), 207 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 632 transitions. [2021-03-11 14:34:44,492 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 632 transitions. Word has length 19 [2021-03-11 14:34:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:44,492 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 632 transitions. [2021-03-11 14:34:44,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 632 transitions. [2021-03-11 14:34:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:44,493 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:44,493 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:44,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-03-11 14:34:44,493 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:44,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:44,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1927068432, now seen corresponding path program 169 times [2021-03-11 14:34:44,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:44,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006129563] [2021-03-11 14:34:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:44,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:44,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:44,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:44,510 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:44,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:44,525 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:44,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:44,540 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:44,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:44,559 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:44,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:44,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006129563] [2021-03-11 14:34:44,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:44,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:44,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197669089] [2021-03-11 14:34:44,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:44,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:44,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:44,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:44,577 INFO L87 Difference]: Start difference. First operand 208 states and 632 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:44,645 INFO L93 Difference]: Finished difference Result 378 states and 982 transitions. [2021-03-11 14:34:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:44,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:44,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:44,646 INFO L225 Difference]: With dead ends: 378 [2021-03-11 14:34:44,646 INFO L226 Difference]: Without dead ends: 362 [2021-03-11 14:34:44,646 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-03-11 14:34:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 224. [2021-03-11 14:34:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 3.022421524663677) internal successors, (674), 223 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 674 transitions. [2021-03-11 14:34:44,650 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 674 transitions. Word has length 19 [2021-03-11 14:34:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:44,650 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 674 transitions. [2021-03-11 14:34:44,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 674 transitions. [2021-03-11 14:34:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:44,650 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:44,650 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:44,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-03-11 14:34:44,650 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1552417246, now seen corresponding path program 170 times [2021-03-11 14:34:44,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:44,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321300878] [2021-03-11 14:34:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:44,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:44,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:44,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:44,666 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:44,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:44,682 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:44,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:44,696 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:44,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:44,714 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:44,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:44,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321300878] [2021-03-11 14:34:44,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:44,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:44,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121139071] [2021-03-11 14:34:44,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:44,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:44,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:44,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:44,739 INFO L87 Difference]: Start difference. First operand 224 states and 674 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:44,797 INFO L93 Difference]: Finished difference Result 376 states and 972 transitions. [2021-03-11 14:34:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:44,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:44,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:44,798 INFO L225 Difference]: With dead ends: 376 [2021-03-11 14:34:44,798 INFO L226 Difference]: Without dead ends: 354 [2021-03-11 14:34:44,798 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:44,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-03-11 14:34:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 216. [2021-03-11 14:34:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0511627906976746) internal successors, (656), 215 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 656 transitions. [2021-03-11 14:34:44,801 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 656 transitions. Word has length 19 [2021-03-11 14:34:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:44,801 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 656 transitions. [2021-03-11 14:34:44,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 656 transitions. [2021-03-11 14:34:44,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:44,801 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:44,802 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:44,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-03-11 14:34:44,802 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:44,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1396871126, now seen corresponding path program 171 times [2021-03-11 14:34:44,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:44,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195234340] [2021-03-11 14:34:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:44,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:44,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:44,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:44,830 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:44,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:44,846 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:44,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:44,866 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:44,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:44,887 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:44,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:44,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195234340] [2021-03-11 14:34:44,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:44,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:44,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962788191] [2021-03-11 14:34:44,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:44,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:44,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:44,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:44,905 INFO L87 Difference]: Start difference. First operand 216 states and 656 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:44,952 INFO L93 Difference]: Finished difference Result 369 states and 955 transitions. [2021-03-11 14:34:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:44,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:44,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:44,953 INFO L225 Difference]: With dead ends: 369 [2021-03-11 14:34:44,953 INFO L226 Difference]: Without dead ends: 353 [2021-03-11 14:34:44,953 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:44,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-03-11 14:34:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 219. [2021-03-11 14:34:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.0275229357798166) internal successors, (660), 218 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 660 transitions. [2021-03-11 14:34:44,957 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 660 transitions. Word has length 19 [2021-03-11 14:34:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:44,958 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 660 transitions. [2021-03-11 14:34:44,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 660 transitions. [2021-03-11 14:34:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:44,958 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:44,958 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:44,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-03-11 14:34:44,958 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1137812900, now seen corresponding path program 172 times [2021-03-11 14:34:44,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:44,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79949267] [2021-03-11 14:34:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:44,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:44,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:44,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:44,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:44,979 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:44,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:44,997 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:44,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:45,021 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:45,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:45,040 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:45,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:45,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79949267] [2021-03-11 14:34:45,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:45,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:45,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512239713] [2021-03-11 14:34:45,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:45,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:45,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:45,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:45,058 INFO L87 Difference]: Start difference. First operand 219 states and 660 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:45,103 INFO L93 Difference]: Finished difference Result 363 states and 940 transitions. [2021-03-11 14:34:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:45,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:45,104 INFO L225 Difference]: With dead ends: 363 [2021-03-11 14:34:45,104 INFO L226 Difference]: Without dead ends: 350 [2021-03-11 14:34:45,104 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-03-11 14:34:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 216. [2021-03-11 14:34:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0372093023255813) internal successors, (653), 215 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 653 transitions. [2021-03-11 14:34:45,107 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 653 transitions. Word has length 19 [2021-03-11 14:34:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:45,107 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 653 transitions. [2021-03-11 14:34:45,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 653 transitions. [2021-03-11 14:34:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:45,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:45,108 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:45,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-03-11 14:34:45,108 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash 525434594, now seen corresponding path program 173 times [2021-03-11 14:34:45,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:45,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034397334] [2021-03-11 14:34:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:45,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:45,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:45,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:45,124 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:45,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:45,139 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:45,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:45,160 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:45,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:45,185 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:45,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:45,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034397334] [2021-03-11 14:34:45,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:45,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:45,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835533106] [2021-03-11 14:34:45,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:45,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:45,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:45,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:45,204 INFO L87 Difference]: Start difference. First operand 216 states and 653 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:45,268 INFO L93 Difference]: Finished difference Result 364 states and 944 transitions. [2021-03-11 14:34:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:45,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:45,269 INFO L225 Difference]: With dead ends: 364 [2021-03-11 14:34:45,269 INFO L226 Difference]: Without dead ends: 350 [2021-03-11 14:34:45,269 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-03-11 14:34:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 218. [2021-03-11 14:34:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 3.0230414746543777) internal successors, (656), 217 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 656 transitions. [2021-03-11 14:34:45,272 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 656 transitions. Word has length 19 [2021-03-11 14:34:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:45,272 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 656 transitions. [2021-03-11 14:34:45,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,272 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 656 transitions. [2021-03-11 14:34:45,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:45,272 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:45,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:45,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-03-11 14:34:45,273 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1645564424, now seen corresponding path program 174 times [2021-03-11 14:34:45,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:45,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84908341] [2021-03-11 14:34:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:45,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:45,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:45,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:45,293 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:45,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:45,311 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:45,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:45,336 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:45,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:45,358 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:45,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:45,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84908341] [2021-03-11 14:34:45,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:45,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:45,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340278116] [2021-03-11 14:34:45,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:45,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:45,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:45,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:45,380 INFO L87 Difference]: Start difference. First operand 218 states and 656 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:45,432 INFO L93 Difference]: Finished difference Result 360 states and 933 transitions. [2021-03-11 14:34:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:45,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:45,433 INFO L225 Difference]: With dead ends: 360 [2021-03-11 14:34:45,433 INFO L226 Difference]: Without dead ends: 344 [2021-03-11 14:34:45,433 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-03-11 14:34:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 212. [2021-03-11 14:34:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.052132701421801) internal successors, (644), 211 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 644 transitions. [2021-03-11 14:34:45,436 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 644 transitions. Word has length 19 [2021-03-11 14:34:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:45,436 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 644 transitions. [2021-03-11 14:34:45,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 644 transitions. [2021-03-11 14:34:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:45,436 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:45,436 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:45,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-03-11 14:34:45,437 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:45,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1945413138, now seen corresponding path program 175 times [2021-03-11 14:34:45,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:45,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5428113] [2021-03-11 14:34:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:45,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:45,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:45,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:45,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:45,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:45,468 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:45,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:45,483 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:45,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:45,501 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:45,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:45,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5428113] [2021-03-11 14:34:45,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:45,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:45,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253656397] [2021-03-11 14:34:45,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:45,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:45,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:45,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:45,519 INFO L87 Difference]: Start difference. First operand 212 states and 644 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:45,564 INFO L93 Difference]: Finished difference Result 380 states and 985 transitions. [2021-03-11 14:34:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:45,565 INFO L225 Difference]: With dead ends: 380 [2021-03-11 14:34:45,565 INFO L226 Difference]: Without dead ends: 364 [2021-03-11 14:34:45,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-03-11 14:34:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 226. [2021-03-11 14:34:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 3.017777777777778) internal successors, (679), 225 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 679 transitions. [2021-03-11 14:34:45,568 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 679 transitions. Word has length 19 [2021-03-11 14:34:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:45,568 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 679 transitions. [2021-03-11 14:34:45,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 679 transitions. [2021-03-11 14:34:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:45,568 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:45,568 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:45,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-03-11 14:34:45,568 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:45,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:45,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1974902972, now seen corresponding path program 176 times [2021-03-11 14:34:45,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:45,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490478014] [2021-03-11 14:34:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:45,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:45,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:45,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:45,585 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:45,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:45,595 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:45,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:45,610 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:45,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:45,628 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:45,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:45,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490478014] [2021-03-11 14:34:45,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:45,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:45,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012636080] [2021-03-11 14:34:45,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:45,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:45,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:45,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:45,646 INFO L87 Difference]: Start difference. First operand 226 states and 679 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:45,711 INFO L93 Difference]: Finished difference Result 378 states and 975 transitions. [2021-03-11 14:34:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:45,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:45,712 INFO L225 Difference]: With dead ends: 378 [2021-03-11 14:34:45,712 INFO L226 Difference]: Without dead ends: 356 [2021-03-11 14:34:45,712 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-03-11 14:34:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 218. [2021-03-11 14:34:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 3.0368663594470044) internal successors, (659), 217 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 659 transitions. [2021-03-11 14:34:45,716 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 659 transitions. Word has length 19 [2021-03-11 14:34:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:45,716 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 659 transitions. [2021-03-11 14:34:45,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 659 transitions. [2021-03-11 14:34:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:45,716 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:45,716 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:45,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-03-11 14:34:45,716 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:45,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:45,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1493760628, now seen corresponding path program 177 times [2021-03-11 14:34:45,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:45,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480536813] [2021-03-11 14:34:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:45,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:45,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:45,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:45,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:45,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:45,747 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:45,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:45,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:45,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:45,796 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:45,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:45,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480536813] [2021-03-11 14:34:45,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:45,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:45,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155634522] [2021-03-11 14:34:45,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:45,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:45,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:45,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:45,818 INFO L87 Difference]: Start difference. First operand 218 states and 659 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:45,866 INFO L93 Difference]: Finished difference Result 375 states and 968 transitions. [2021-03-11 14:34:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:45,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:45,866 INFO L225 Difference]: With dead ends: 375 [2021-03-11 14:34:45,866 INFO L226 Difference]: Without dead ends: 359 [2021-03-11 14:34:45,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-03-11 14:34:45,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 223. [2021-03-11 14:34:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.009009009009009) internal successors, (668), 222 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 668 transitions. [2021-03-11 14:34:45,870 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 668 transitions. Word has length 19 [2021-03-11 14:34:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:45,870 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 668 transitions. [2021-03-11 14:34:45,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 668 transitions. [2021-03-11 14:34:45,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:45,870 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:45,870 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:45,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-03-11 14:34:45,870 INFO L428 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:45,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:45,870 INFO L82 PathProgramCache]: Analyzing trace with hash 2050144574, now seen corresponding path program 178 times [2021-03-11 14:34:45,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:45,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309974884] [2021-03-11 14:34:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:45,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:45,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:45,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:45,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:45,887 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:45,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:45,897 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:45,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:45,939 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:45,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:45,957 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:45,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:45,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309974884] [2021-03-11 14:34:45,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:45,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:45,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171559954] [2021-03-11 14:34:45,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:45,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:45,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:45,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:45,976 INFO L87 Difference]: Start difference. First operand 223 states and 668 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:46,040 INFO L93 Difference]: Finished difference Result 371 states and 956 transitions. [2021-03-11 14:34:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:46,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:46,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:46,041 INFO L225 Difference]: With dead ends: 371 [2021-03-11 14:34:46,041 INFO L226 Difference]: Without dead ends: 354 [2021-03-11 14:34:46,041 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:46,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-03-11 14:34:46,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 218. [2021-03-11 14:34:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 3.013824884792627) internal successors, (654), 217 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 654 transitions. [2021-03-11 14:34:46,044 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 654 transitions. Word has length 19 [2021-03-11 14:34:46,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:46,044 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 654 transitions. [2021-03-11 14:34:46,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,044 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 654 transitions. [2021-03-11 14:34:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:46,044 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:46,045 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:46,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-03-11 14:34:46,045 INFO L428 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:46,045 INFO L82 PathProgramCache]: Analyzing trace with hash 780024098, now seen corresponding path program 179 times [2021-03-11 14:34:46,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:46,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288366304] [2021-03-11 14:34:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:46,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:46,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:46,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:46,066 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:46,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:46,076 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:46,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:46,089 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:46,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:46,108 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:46,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:46,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288366304] [2021-03-11 14:34:46,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:46,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:46,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722445970] [2021-03-11 14:34:46,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:46,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:46,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:46,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:46,127 INFO L87 Difference]: Start difference. First operand 218 states and 654 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:46,188 INFO L93 Difference]: Finished difference Result 370 states and 955 transitions. [2021-03-11 14:34:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:46,188 INFO L225 Difference]: With dead ends: 370 [2021-03-11 14:34:46,188 INFO L226 Difference]: Without dead ends: 356 [2021-03-11 14:34:46,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-03-11 14:34:46,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 222. [2021-03-11 14:34:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.995475113122172) internal successors, (662), 221 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 662 transitions. [2021-03-11 14:34:46,192 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 662 transitions. Word has length 19 [2021-03-11 14:34:46,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:46,192 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 662 transitions. [2021-03-11 14:34:46,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 662 transitions. [2021-03-11 14:34:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:46,192 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:46,192 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:46,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-03-11 14:34:46,192 INFO L428 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:46,192 INFO L82 PathProgramCache]: Analyzing trace with hash 779429452, now seen corresponding path program 180 times [2021-03-11 14:34:46,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:46,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677176789] [2021-03-11 14:34:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:46,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:46,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:46,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:46,219 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:46,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:46,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:46,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:46,247 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:46,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:46,269 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:46,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:46,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677176789] [2021-03-11 14:34:46,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:46,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:46,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599548159] [2021-03-11 14:34:46,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:46,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:46,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:46,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:46,291 INFO L87 Difference]: Start difference. First operand 222 states and 662 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:46,366 INFO L93 Difference]: Finished difference Result 368 states and 947 transitions. [2021-03-11 14:34:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:46,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:46,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:46,367 INFO L225 Difference]: With dead ends: 368 [2021-03-11 14:34:46,367 INFO L226 Difference]: Without dead ends: 346 [2021-03-11 14:34:46,367 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-03-11 14:34:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 212. [2021-03-11 14:34:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.0331753554502368) internal successors, (640), 211 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 640 transitions. [2021-03-11 14:34:46,370 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 640 transitions. Word has length 19 [2021-03-11 14:34:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:46,370 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 640 transitions. [2021-03-11 14:34:46,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 640 transitions. [2021-03-11 14:34:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:46,370 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:46,370 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:46,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-03-11 14:34:46,370 INFO L428 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:46,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:46,371 INFO L82 PathProgramCache]: Analyzing trace with hash -637075472, now seen corresponding path program 181 times [2021-03-11 14:34:46,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:46,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217563285] [2021-03-11 14:34:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:46,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:46,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:46,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:46,387 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:46,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:46,404 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:46,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:46,424 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:46,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:46,443 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:46,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:46,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217563285] [2021-03-11 14:34:46,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:46,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:46,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683488606] [2021-03-11 14:34:46,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:46,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:46,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:46,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:46,461 INFO L87 Difference]: Start difference. First operand 212 states and 640 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:46,513 INFO L93 Difference]: Finished difference Result 357 states and 917 transitions. [2021-03-11 14:34:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:46,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:46,513 INFO L225 Difference]: With dead ends: 357 [2021-03-11 14:34:46,513 INFO L226 Difference]: Without dead ends: 341 [2021-03-11 14:34:46,514 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:46,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-03-11 14:34:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 218. [2021-03-11 14:34:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 3.013824884792627) internal successors, (654), 217 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 654 transitions. [2021-03-11 14:34:46,517 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 654 transitions. Word has length 19 [2021-03-11 14:34:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:46,517 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 654 transitions. [2021-03-11 14:34:46,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 654 transitions. [2021-03-11 14:34:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:46,517 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:46,517 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:46,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-03-11 14:34:46,517 INFO L428 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:46,517 INFO L82 PathProgramCache]: Analyzing trace with hash -378017246, now seen corresponding path program 182 times [2021-03-11 14:34:46,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:46,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567675434] [2021-03-11 14:34:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:46,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:46,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:46,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:46,539 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:46,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:46,558 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:46,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:46,581 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:46,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:46,603 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:46,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:46,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567675434] [2021-03-11 14:34:46,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:46,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:46,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984503479] [2021-03-11 14:34:46,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:46,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:46,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:46,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:46,625 INFO L87 Difference]: Start difference. First operand 218 states and 654 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:46,673 INFO L93 Difference]: Finished difference Result 351 states and 902 transitions. [2021-03-11 14:34:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:46,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:46,673 INFO L225 Difference]: With dead ends: 351 [2021-03-11 14:34:46,673 INFO L226 Difference]: Without dead ends: 338 [2021-03-11 14:34:46,673 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:46,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-03-11 14:34:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 215. [2021-03-11 14:34:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0233644859813085) internal successors, (647), 214 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 647 transitions. [2021-03-11 14:34:46,678 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 647 transitions. Word has length 19 [2021-03-11 14:34:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:46,678 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 647 transitions. [2021-03-11 14:34:46,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 647 transitions. [2021-03-11 14:34:46,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:46,678 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:46,678 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:46,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-03-11 14:34:46,678 INFO L428 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:46,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:46,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2057453970, now seen corresponding path program 183 times [2021-03-11 14:34:46,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:46,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796205950] [2021-03-11 14:34:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:46,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:46,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:46,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:46,699 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:46,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:46,718 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:46,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:46,745 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:46,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:46,765 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:46,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:46,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796205950] [2021-03-11 14:34:46,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:46,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:46,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455091896] [2021-03-11 14:34:46,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:46,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:46,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:46,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:46,783 INFO L87 Difference]: Start difference. First operand 215 states and 647 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:46,829 INFO L93 Difference]: Finished difference Result 356 states and 912 transitions. [2021-03-11 14:34:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:46,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:46,829 INFO L225 Difference]: With dead ends: 356 [2021-03-11 14:34:46,829 INFO L226 Difference]: Without dead ends: 340 [2021-03-11 14:34:46,829 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:46,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-03-11 14:34:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 220. [2021-03-11 14:34:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.9954337899543377) internal successors, (656), 219 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 656 transitions. [2021-03-11 14:34:46,832 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 656 transitions. Word has length 19 [2021-03-11 14:34:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:46,833 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 656 transitions. [2021-03-11 14:34:46,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,833 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 656 transitions. [2021-03-11 14:34:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:46,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:46,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:46,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-03-11 14:34:46,833 INFO L428 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:46,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:46,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1306391876, now seen corresponding path program 184 times [2021-03-11 14:34:46,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:46,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121644791] [2021-03-11 14:34:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:46,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:46,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:46,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:46,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:46,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:46,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:46,866 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:46,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:46,889 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:46,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:46,907 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:46,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:46,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121644791] [2021-03-11 14:34:46,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:46,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:46,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195827309] [2021-03-11 14:34:46,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:46,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:46,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:46,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:46,925 INFO L87 Difference]: Start difference. First operand 220 states and 656 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:46,992 INFO L93 Difference]: Finished difference Result 352 states and 900 transitions. [2021-03-11 14:34:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:46,992 INFO L225 Difference]: With dead ends: 352 [2021-03-11 14:34:46,992 INFO L226 Difference]: Without dead ends: 335 [2021-03-11 14:34:46,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-03-11 14:34:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 215. [2021-03-11 14:34:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0093457943925235) internal successors, (644), 214 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 644 transitions. [2021-03-11 14:34:46,996 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 644 transitions. Word has length 19 [2021-03-11 14:34:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:46,996 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 644 transitions. [2021-03-11 14:34:46,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 644 transitions. [2021-03-11 14:34:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:46,996 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:46,996 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:46,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-03-11 14:34:46,996 INFO L428 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:46,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:46,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1837091698, now seen corresponding path program 185 times [2021-03-11 14:34:46,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:46,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462215145] [2021-03-11 14:34:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:47,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:47,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:47,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:47,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:47,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:47,031 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:47,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:47,045 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:47,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:47,064 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:47,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:47,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462215145] [2021-03-11 14:34:47,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:47,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:47,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568918972] [2021-03-11 14:34:47,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:47,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:47,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:47,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:47,082 INFO L87 Difference]: Start difference. First operand 215 states and 644 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:47,128 INFO L93 Difference]: Finished difference Result 341 states and 876 transitions. [2021-03-11 14:34:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:47,129 INFO L225 Difference]: With dead ends: 341 [2021-03-11 14:34:47,129 INFO L226 Difference]: Without dead ends: 331 [2021-03-11 14:34:47,129 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-03-11 14:34:47,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 217. [2021-03-11 14:34:47,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.9953703703703702) internal successors, (647), 216 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 647 transitions. [2021-03-11 14:34:47,132 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 647 transitions. Word has length 19 [2021-03-11 14:34:47,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:47,132 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 647 transitions. [2021-03-11 14:34:47,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 647 transitions. [2021-03-11 14:34:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:47,132 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:47,132 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:47,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-03-11 14:34:47,132 INFO L428 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:47,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:47,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1092389200, now seen corresponding path program 186 times [2021-03-11 14:34:47,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:47,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228533330] [2021-03-11 14:34:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:47,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:47,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:47,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:47,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:47,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:47,166 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:47,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:47,180 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:47,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:47,199 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:47,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:47,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228533330] [2021-03-11 14:34:47,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:47,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:47,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675252070] [2021-03-11 14:34:47,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:47,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:47,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:47,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:47,233 INFO L87 Difference]: Start difference. First operand 217 states and 647 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:47,304 INFO L93 Difference]: Finished difference Result 339 states and 871 transitions. [2021-03-11 14:34:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:47,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:47,305 INFO L225 Difference]: With dead ends: 339 [2021-03-11 14:34:47,305 INFO L226 Difference]: Without dead ends: 322 [2021-03-11 14:34:47,305 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-03-11 14:34:47,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 212. [2021-03-11 14:34:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.018957345971564) internal successors, (637), 211 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 637 transitions. [2021-03-11 14:34:47,308 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 637 transitions. Word has length 19 [2021-03-11 14:34:47,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:47,308 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 637 transitions. [2021-03-11 14:34:47,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 637 transitions. [2021-03-11 14:34:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:47,308 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:47,308 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:47,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-03-11 14:34:47,309 INFO L428 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:47,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2036640602, now seen corresponding path program 187 times [2021-03-11 14:34:47,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:47,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380473423] [2021-03-11 14:34:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:47,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:47,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:47,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:47,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:47,334 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:47,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:47,355 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:47,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:47,374 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:47,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:47,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380473423] [2021-03-11 14:34:47,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:47,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:47,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558994804] [2021-03-11 14:34:47,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:47,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:47,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:47,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:47,392 INFO L87 Difference]: Start difference. First operand 212 states and 637 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:47,457 INFO L93 Difference]: Finished difference Result 347 states and 896 transitions. [2021-03-11 14:34:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:47,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:47,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:47,458 INFO L225 Difference]: With dead ends: 347 [2021-03-11 14:34:47,458 INFO L226 Difference]: Without dead ends: 333 [2021-03-11 14:34:47,458 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-03-11 14:34:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 216. [2021-03-11 14:34:47,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0093023255813955) internal successors, (647), 215 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 647 transitions. [2021-03-11 14:34:47,461 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 647 transitions. Word has length 19 [2021-03-11 14:34:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:47,461 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 647 transitions. [2021-03-11 14:34:47,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 647 transitions. [2021-03-11 14:34:47,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:47,462 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:47,462 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:47,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-03-11 14:34:47,462 INFO L428 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:47,462 INFO L82 PathProgramCache]: Analyzing trace with hash -916510772, now seen corresponding path program 188 times [2021-03-11 14:34:47,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:47,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082695415] [2021-03-11 14:34:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:47,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:47,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:47,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:47,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:47,494 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:47,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:47,517 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:47,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:47,538 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:47,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:47,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082695415] [2021-03-11 14:34:47,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:47,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:47,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906879203] [2021-03-11 14:34:47,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:47,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:47,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:47,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:47,556 INFO L87 Difference]: Start difference. First operand 216 states and 647 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:47,601 INFO L93 Difference]: Finished difference Result 343 states and 885 transitions. [2021-03-11 14:34:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:47,602 INFO L225 Difference]: With dead ends: 343 [2021-03-11 14:34:47,602 INFO L226 Difference]: Without dead ends: 331 [2021-03-11 14:34:47,602 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:47,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-03-11 14:34:47,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 214. [2021-03-11 14:34:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0140845070422535) internal successors, (642), 213 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 642 transitions. [2021-03-11 14:34:47,606 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 642 transitions. Word has length 19 [2021-03-11 14:34:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:47,606 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 642 transitions. [2021-03-11 14:34:47,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 642 transitions. [2021-03-11 14:34:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:47,606 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:47,607 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:47,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-03-11 14:34:47,607 INFO L428 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:47,607 INFO L82 PathProgramCache]: Analyzing trace with hash -425699644, now seen corresponding path program 189 times [2021-03-11 14:34:47,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:47,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81185061] [2021-03-11 14:34:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:47,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:47,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:47,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:47,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:47,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:47,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:47,650 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:47,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:47,668 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:47,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:47,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81185061] [2021-03-11 14:34:47,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:47,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:47,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998594975] [2021-03-11 14:34:47,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:47,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:47,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:47,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:47,697 INFO L87 Difference]: Start difference. First operand 214 states and 642 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:47,762 INFO L93 Difference]: Finished difference Result 347 states and 894 transitions. [2021-03-11 14:34:47,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:47,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:47,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:47,763 INFO L225 Difference]: With dead ends: 347 [2021-03-11 14:34:47,763 INFO L226 Difference]: Without dead ends: 333 [2021-03-11 14:34:47,763 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-03-11 14:34:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 218. [2021-03-11 14:34:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9953917050691246) internal successors, (650), 217 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 650 transitions. [2021-03-11 14:34:47,766 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 650 transitions. Word has length 19 [2021-03-11 14:34:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:47,767 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 650 transitions. [2021-03-11 14:34:47,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 650 transitions. [2021-03-11 14:34:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:47,767 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:47,767 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:47,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-03-11 14:34:47,767 INFO L428 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:47,767 INFO L82 PathProgramCache]: Analyzing trace with hash 768327052, now seen corresponding path program 190 times [2021-03-11 14:34:47,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:47,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672748060] [2021-03-11 14:34:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:47,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:47,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:47,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:47,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:47,797 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:47,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:47,811 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:47,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:47,829 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:47,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:47,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672748060] [2021-03-11 14:34:47,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:47,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:47,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048751189] [2021-03-11 14:34:47,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:47,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:47,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:47,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:47,847 INFO L87 Difference]: Start difference. First operand 218 states and 650 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:47,909 INFO L93 Difference]: Finished difference Result 345 states and 886 transitions. [2021-03-11 14:34:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:47,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:47,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:47,910 INFO L225 Difference]: With dead ends: 345 [2021-03-11 14:34:47,910 INFO L226 Difference]: Without dead ends: 329 [2021-03-11 14:34:47,910 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-03-11 14:34:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 214. [2021-03-11 14:34:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.004694835680751) internal successors, (640), 213 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 640 transitions. [2021-03-11 14:34:47,913 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 640 transitions. Word has length 19 [2021-03-11 14:34:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:47,913 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 640 transitions. [2021-03-11 14:34:47,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 640 transitions. [2021-03-11 14:34:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:47,913 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:47,913 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:47,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-03-11 14:34:47,914 INFO L428 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:47,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1451740574, now seen corresponding path program 191 times [2021-03-11 14:34:47,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:47,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534363192] [2021-03-11 14:34:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:47,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:47,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:47,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:47,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:47,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:47,940 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:47,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:47,954 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:47,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:47,973 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:47,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:47,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534363192] [2021-03-11 14:34:47,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:47,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:47,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712458572] [2021-03-11 14:34:47,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:47,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:47,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:47,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:47,991 INFO L87 Difference]: Start difference. First operand 214 states and 640 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:48,035 INFO L93 Difference]: Finished difference Result 337 states and 867 transitions. [2021-03-11 14:34:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:48,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:48,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:48,036 INFO L225 Difference]: With dead ends: 337 [2021-03-11 14:34:48,036 INFO L226 Difference]: Without dead ends: 327 [2021-03-11 14:34:48,036 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:48,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-03-11 14:34:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 216. [2021-03-11 14:34:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.9906976744186045) internal successors, (643), 215 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 643 transitions. [2021-03-11 14:34:48,039 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 643 transitions. Word has length 19 [2021-03-11 14:34:48,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:48,039 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 643 transitions. [2021-03-11 14:34:48,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 643 transitions. [2021-03-11 14:34:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:48,040 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:48,040 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:48,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-03-11 14:34:48,040 INFO L428 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:48,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:48,040 INFO L82 PathProgramCache]: Analyzing trace with hash -707038076, now seen corresponding path program 192 times [2021-03-11 14:34:48,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:48,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131419963] [2021-03-11 14:34:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:48,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:48,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:48,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:48,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:48,065 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:48,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:48,079 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:48,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:48,096 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:48,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:48,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131419963] [2021-03-11 14:34:48,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:48,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:48,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703477498] [2021-03-11 14:34:48,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:48,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:48,115 INFO L87 Difference]: Start difference. First operand 216 states and 643 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:48,172 INFO L93 Difference]: Finished difference Result 335 states and 862 transitions. [2021-03-11 14:34:48,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:48,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:48,173 INFO L225 Difference]: With dead ends: 335 [2021-03-11 14:34:48,173 INFO L226 Difference]: Without dead ends: 315 [2021-03-11 14:34:48,173 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-03-11 14:34:48,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 208. [2021-03-11 14:34:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 3.033816425120773) internal successors, (628), 207 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 628 transitions. [2021-03-11 14:34:48,176 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 628 transitions. Word has length 19 [2021-03-11 14:34:48,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:48,176 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 628 transitions. [2021-03-11 14:34:48,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,176 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 628 transitions. [2021-03-11 14:34:48,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:48,176 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:48,176 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:48,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-03-11 14:34:48,176 INFO L428 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:48,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:48,177 INFO L82 PathProgramCache]: Analyzing trace with hash 807111978, now seen corresponding path program 193 times [2021-03-11 14:34:48,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:48,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21578587] [2021-03-11 14:34:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:48,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:48,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:48,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:48,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:48,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:48,211 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:48,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:48,231 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:48,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:48,250 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:48,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:48,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21578587] [2021-03-11 14:34:48,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:48,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:48,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167612614] [2021-03-11 14:34:48,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:48,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:48,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:48,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:48,268 INFO L87 Difference]: Start difference. First operand 208 states and 628 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:48,313 INFO L93 Difference]: Finished difference Result 357 states and 929 transitions. [2021-03-11 14:34:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:48,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:48,314 INFO L225 Difference]: With dead ends: 357 [2021-03-11 14:34:48,314 INFO L226 Difference]: Without dead ends: 341 [2021-03-11 14:34:48,314 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:48,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-03-11 14:34:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 217. [2021-03-11 14:34:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0324074074074074) internal successors, (655), 216 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 655 transitions. [2021-03-11 14:34:48,317 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 655 transitions. Word has length 19 [2021-03-11 14:34:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:48,317 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 655 transitions. [2021-03-11 14:34:48,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 655 transitions. [2021-03-11 14:34:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:48,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:48,318 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:48,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-03-11 14:34:48,318 INFO L428 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:48,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1066170204, now seen corresponding path program 194 times [2021-03-11 14:34:48,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:48,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230631984] [2021-03-11 14:34:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:48,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:48,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:48,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:48,334 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:48,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:48,355 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:48,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:48,375 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:48,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:48,394 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:48,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:48,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230631984] [2021-03-11 14:34:48,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:48,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:48,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831658499] [2021-03-11 14:34:48,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:48,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:48,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:48,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:48,412 INFO L87 Difference]: Start difference. First operand 217 states and 655 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:48,461 INFO L93 Difference]: Finished difference Result 351 states and 914 transitions. [2021-03-11 14:34:48,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:48,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:48,462 INFO L225 Difference]: With dead ends: 351 [2021-03-11 14:34:48,462 INFO L226 Difference]: Without dead ends: 338 [2021-03-11 14:34:48,462 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-03-11 14:34:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 214. [2021-03-11 14:34:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0422535211267605) internal successors, (648), 213 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 648 transitions. [2021-03-11 14:34:48,465 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 648 transitions. Word has length 19 [2021-03-11 14:34:48,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:48,465 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 648 transitions. [2021-03-11 14:34:48,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 648 transitions. [2021-03-11 14:34:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:48,466 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:48,466 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:48,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-03-11 14:34:48,466 INFO L428 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:48,466 INFO L82 PathProgramCache]: Analyzing trace with hash -793325876, now seen corresponding path program 195 times [2021-03-11 14:34:48,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:48,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6927343] [2021-03-11 14:34:48,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:48,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:48,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:48,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:48,482 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:48,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:48,501 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:48,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:48,527 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:48,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:48,547 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:48,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:48,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6927343] [2021-03-11 14:34:48,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:48,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:48,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359740645] [2021-03-11 14:34:48,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:48,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:48,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:48,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:48,566 INFO L87 Difference]: Start difference. First operand 214 states and 648 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:48,614 INFO L93 Difference]: Finished difference Result 361 states and 938 transitions. [2021-03-11 14:34:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:48,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:48,615 INFO L225 Difference]: With dead ends: 361 [2021-03-11 14:34:48,615 INFO L226 Difference]: Without dead ends: 345 [2021-03-11 14:34:48,615 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-03-11 14:34:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 219. [2021-03-11 14:34:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.0137614678899083) internal successors, (657), 218 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 657 transitions. [2021-03-11 14:34:48,618 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 657 transitions. Word has length 19 [2021-03-11 14:34:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:48,618 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 657 transitions. [2021-03-11 14:34:48,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,618 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 657 transitions. [2021-03-11 14:34:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:48,618 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:48,618 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:48,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-03-11 14:34:48,618 INFO L428 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:48,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:48,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1544387970, now seen corresponding path program 196 times [2021-03-11 14:34:48,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:48,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364477501] [2021-03-11 14:34:48,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:48,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:48,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:48,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:48,635 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:48,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:48,654 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:48,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:48,678 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:48,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:48,696 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:48,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:48,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364477501] [2021-03-11 14:34:48,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:48,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:48,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145951946] [2021-03-11 14:34:48,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:48,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:48,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:48,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:48,715 INFO L87 Difference]: Start difference. First operand 219 states and 657 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:48,773 INFO L93 Difference]: Finished difference Result 357 states and 926 transitions. [2021-03-11 14:34:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:48,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:48,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:48,774 INFO L225 Difference]: With dead ends: 357 [2021-03-11 14:34:48,774 INFO L226 Difference]: Without dead ends: 340 [2021-03-11 14:34:48,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-03-11 14:34:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 214. [2021-03-11 14:34:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.028169014084507) internal successors, (645), 213 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 645 transitions. [2021-03-11 14:34:48,777 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 645 transitions. Word has length 19 [2021-03-11 14:34:48,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:48,777 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 645 transitions. [2021-03-11 14:34:48,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,777 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 645 transitions. [2021-03-11 14:34:48,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:48,778 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:48,778 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:48,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-03-11 14:34:48,778 INFO L428 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:48,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:48,778 INFO L82 PathProgramCache]: Analyzing trace with hash -392904248, now seen corresponding path program 197 times [2021-03-11 14:34:48,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:48,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798850667] [2021-03-11 14:34:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:48,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:48,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:48,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:48,797 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:48,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:48,818 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:48,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:48,835 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:48,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:48,857 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:48,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:48,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798850667] [2021-03-11 14:34:48,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:48,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:48,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327797949] [2021-03-11 14:34:48,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:48,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:48,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:48,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:48,880 INFO L87 Difference]: Start difference. First operand 214 states and 645 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:48,936 INFO L93 Difference]: Finished difference Result 346 states and 902 transitions. [2021-03-11 14:34:48,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:48,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:48,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:48,936 INFO L225 Difference]: With dead ends: 346 [2021-03-11 14:34:48,936 INFO L226 Difference]: Without dead ends: 336 [2021-03-11 14:34:48,937 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-03-11 14:34:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 216. [2021-03-11 14:34:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.013953488372093) internal successors, (648), 215 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 648 transitions. [2021-03-11 14:34:48,940 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 648 transitions. Word has length 19 [2021-03-11 14:34:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:48,940 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 648 transitions. [2021-03-11 14:34:48,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 648 transitions. [2021-03-11 14:34:48,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:48,940 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:48,940 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:48,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-03-11 14:34:48,940 INFO L428 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:48,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:48,940 INFO L82 PathProgramCache]: Analyzing trace with hash 351798250, now seen corresponding path program 198 times [2021-03-11 14:34:48,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:48,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385467688] [2021-03-11 14:34:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:48,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:48,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:48,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:48,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:48,957 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:48,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:48,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:48,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:48,989 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:48,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:49,014 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:49,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:49,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385467688] [2021-03-11 14:34:49,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:49,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:49,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323535154] [2021-03-11 14:34:49,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:49,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:49,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:49,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:49,035 INFO L87 Difference]: Start difference. First operand 216 states and 648 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:49,101 INFO L93 Difference]: Finished difference Result 348 states and 905 transitions. [2021-03-11 14:34:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:49,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:49,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:49,102 INFO L225 Difference]: With dead ends: 348 [2021-03-11 14:34:49,102 INFO L226 Difference]: Without dead ends: 331 [2021-03-11 14:34:49,102 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:49,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-03-11 14:34:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 211. [2021-03-11 14:34:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 3.038095238095238) internal successors, (638), 210 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 638 transitions. [2021-03-11 14:34:49,105 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 638 transitions. Word has length 19 [2021-03-11 14:34:49,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:49,105 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 638 transitions. [2021-03-11 14:34:49,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,105 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 638 transitions. [2021-03-11 14:34:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:49,105 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:49,105 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:49,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-03-11 14:34:49,105 INFO L428 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:49,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:49,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1561821240, now seen corresponding path program 199 times [2021-03-11 14:34:49,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:49,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274244468] [2021-03-11 14:34:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:49,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:49,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:49,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:49,122 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:49,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:49,140 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:49,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:49,160 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:49,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:49,178 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:49,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:49,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274244468] [2021-03-11 14:34:49,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:49,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:49,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456686186] [2021-03-11 14:34:49,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:49,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:49,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:49,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:49,197 INFO L87 Difference]: Start difference. First operand 211 states and 638 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:49,238 INFO L93 Difference]: Finished difference Result 359 states and 931 transitions. [2021-03-11 14:34:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:49,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:49,239 INFO L225 Difference]: With dead ends: 359 [2021-03-11 14:34:49,239 INFO L226 Difference]: Without dead ends: 343 [2021-03-11 14:34:49,239 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-03-11 14:34:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 217. [2021-03-11 14:34:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0185185185185186) internal successors, (652), 216 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 652 transitions. [2021-03-11 14:34:49,243 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 652 transitions. Word has length 19 [2021-03-11 14:34:49,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:49,243 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 652 transitions. [2021-03-11 14:34:49,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,243 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 652 transitions. [2021-03-11 14:34:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:49,243 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:49,243 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:49,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-03-11 14:34:49,243 INFO L428 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:49,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1302763014, now seen corresponding path program 200 times [2021-03-11 14:34:49,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:49,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527747686] [2021-03-11 14:34:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:49,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:49,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:49,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:49,261 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:49,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:49,279 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:49,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:49,299 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:49,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:49,318 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:49,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:49,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527747686] [2021-03-11 14:34:49,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:49,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:49,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364979031] [2021-03-11 14:34:49,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:49,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:49,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:49,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:49,336 INFO L87 Difference]: Start difference. First operand 217 states and 652 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:49,377 INFO L93 Difference]: Finished difference Result 353 states and 916 transitions. [2021-03-11 14:34:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:49,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:49,378 INFO L225 Difference]: With dead ends: 353 [2021-03-11 14:34:49,378 INFO L226 Difference]: Without dead ends: 340 [2021-03-11 14:34:49,378 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-03-11 14:34:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 214. [2021-03-11 14:34:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.028169014084507) internal successors, (645), 213 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 645 transitions. [2021-03-11 14:34:49,381 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 645 transitions. Word has length 19 [2021-03-11 14:34:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:49,381 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 645 transitions. [2021-03-11 14:34:49,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 645 transitions. [2021-03-11 14:34:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:49,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:49,381 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:49,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-03-11 14:34:49,381 INFO L428 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:49,382 INFO L82 PathProgramCache]: Analyzing trace with hash -467729652, now seen corresponding path program 201 times [2021-03-11 14:34:49,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:49,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495093237] [2021-03-11 14:34:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:49,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:49,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:49,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:49,411 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:49,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:49,430 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:49,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:49,444 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:49,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:49,463 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:49,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:49,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495093237] [2021-03-11 14:34:49,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:49,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:49,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868944003] [2021-03-11 14:34:49,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:49,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:49,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:49,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:49,482 INFO L87 Difference]: Start difference. First operand 214 states and 645 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:49,535 INFO L93 Difference]: Finished difference Result 365 states and 945 transitions. [2021-03-11 14:34:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:49,536 INFO L225 Difference]: With dead ends: 365 [2021-03-11 14:34:49,536 INFO L226 Difference]: Without dead ends: 349 [2021-03-11 14:34:49,536 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:49,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-03-11 14:34:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 220. [2021-03-11 14:34:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.9954337899543377) internal successors, (656), 219 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 656 transitions. [2021-03-11 14:34:49,539 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 656 transitions. Word has length 19 [2021-03-11 14:34:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:49,539 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 656 transitions. [2021-03-11 14:34:49,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 656 transitions. [2021-03-11 14:34:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:49,539 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:49,539 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:49,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-03-11 14:34:49,540 INFO L428 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:49,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1443934402, now seen corresponding path program 202 times [2021-03-11 14:34:49,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:49,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302268377] [2021-03-11 14:34:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:49,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:49,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:49,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:49,558 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:49,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:49,576 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:49,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:49,590 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:49,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:49,609 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:49,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:49,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302268377] [2021-03-11 14:34:49,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:49,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:49,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351247104] [2021-03-11 14:34:49,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:49,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:49,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:49,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:49,627 INFO L87 Difference]: Start difference. First operand 220 states and 656 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:49,687 INFO L93 Difference]: Finished difference Result 362 states and 934 transitions. [2021-03-11 14:34:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:49,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:49,688 INFO L225 Difference]: With dead ends: 362 [2021-03-11 14:34:49,688 INFO L226 Difference]: Without dead ends: 343 [2021-03-11 14:34:49,688 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-03-11 14:34:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 214. [2021-03-11 14:34:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0140845070422535) internal successors, (642), 213 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 642 transitions. [2021-03-11 14:34:49,691 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 642 transitions. Word has length 19 [2021-03-11 14:34:49,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:49,691 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 642 transitions. [2021-03-11 14:34:49,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 642 transitions. [2021-03-11 14:34:49,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:49,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:49,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:49,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-03-11 14:34:49,692 INFO L428 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1543632934, now seen corresponding path program 203 times [2021-03-11 14:34:49,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:49,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050928675] [2021-03-11 14:34:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:49,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:49,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:49,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:49,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:49,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:49,726 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:49,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:49,750 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:49,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:49,769 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:49,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:49,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050928675] [2021-03-11 14:34:49,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:49,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:49,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806544048] [2021-03-11 14:34:49,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:49,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:49,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:49,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:49,787 INFO L87 Difference]: Start difference. First operand 214 states and 642 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:49,833 INFO L93 Difference]: Finished difference Result 349 states and 906 transitions. [2021-03-11 14:34:49,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:49,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:49,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:49,833 INFO L225 Difference]: With dead ends: 349 [2021-03-11 14:34:49,833 INFO L226 Difference]: Without dead ends: 339 [2021-03-11 14:34:49,833 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-03-11 14:34:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 216. [2021-03-11 14:34:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0) internal successors, (645), 215 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 645 transitions. [2021-03-11 14:34:49,837 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 645 transitions. Word has length 19 [2021-03-11 14:34:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:49,837 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 645 transitions. [2021-03-11 14:34:49,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 645 transitions. [2021-03-11 14:34:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:49,838 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:49,838 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:49,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-03-11 14:34:49,838 INFO L428 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:49,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:49,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1261929366, now seen corresponding path program 204 times [2021-03-11 14:34:49,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:49,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49500896] [2021-03-11 14:34:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:49,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:49,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:49,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:49,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:49,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:49,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:49,873 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:49,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:49,897 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:49,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:49,915 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:49,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:49,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49500896] [2021-03-11 14:34:49,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:49,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:49,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109105106] [2021-03-11 14:34:49,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:49,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:49,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:49,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:49,934 INFO L87 Difference]: Start difference. First operand 216 states and 645 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:49,990 INFO L93 Difference]: Finished difference Result 352 states and 911 transitions. [2021-03-11 14:34:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:49,991 INFO L225 Difference]: With dead ends: 352 [2021-03-11 14:34:49,991 INFO L226 Difference]: Without dead ends: 334 [2021-03-11 14:34:49,991 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-03-11 14:34:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 211. [2021-03-11 14:34:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 3.0238095238095237) internal successors, (635), 210 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 635 transitions. [2021-03-11 14:34:49,994 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 635 transitions. Word has length 19 [2021-03-11 14:34:49,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:49,994 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 635 transitions. [2021-03-11 14:34:49,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 635 transitions. [2021-03-11 14:34:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:49,994 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:49,994 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:49,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-03-11 14:34:49,994 INFO L428 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:49,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:49,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1236225016, now seen corresponding path program 205 times [2021-03-11 14:34:49,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:49,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724935343] [2021-03-11 14:34:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:50,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:50,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:50,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:50,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:50,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:50,022 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:50,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:50,046 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:50,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:50,065 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:50,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:50,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724935343] [2021-03-11 14:34:50,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:50,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:50,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942490720] [2021-03-11 14:34:50,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:50,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:50,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:50,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:50,084 INFO L87 Difference]: Start difference. First operand 211 states and 635 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:50,132 INFO L93 Difference]: Finished difference Result 366 states and 949 transitions. [2021-03-11 14:34:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:50,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:50,133 INFO L225 Difference]: With dead ends: 366 [2021-03-11 14:34:50,133 INFO L226 Difference]: Without dead ends: 350 [2021-03-11 14:34:50,133 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-03-11 14:34:50,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 221. [2021-03-11 14:34:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 3.0136363636363637) internal successors, (663), 220 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 663 transitions. [2021-03-11 14:34:50,136 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 663 transitions. Word has length 19 [2021-03-11 14:34:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:50,136 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 663 transitions. [2021-03-11 14:34:50,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,136 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 663 transitions. [2021-03-11 14:34:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:50,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:50,137 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:50,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-03-11 14:34:50,137 INFO L428 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:50,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:50,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1987287110, now seen corresponding path program 206 times [2021-03-11 14:34:50,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:50,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339836593] [2021-03-11 14:34:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:50,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:50,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:50,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:50,167 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:50,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:50,177 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:50,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:50,201 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:50,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:50,220 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:50,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:50,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339836593] [2021-03-11 14:34:50,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:50,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:50,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284461033] [2021-03-11 14:34:50,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:50,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:50,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:50,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:50,238 INFO L87 Difference]: Start difference. First operand 221 states and 663 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:50,292 INFO L93 Difference]: Finished difference Result 362 states and 937 transitions. [2021-03-11 14:34:50,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:50,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:50,292 INFO L225 Difference]: With dead ends: 362 [2021-03-11 14:34:50,292 INFO L226 Difference]: Without dead ends: 345 [2021-03-11 14:34:50,292 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:50,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-03-11 14:34:50,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 216. [2021-03-11 14:34:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0186046511627906) internal successors, (649), 215 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 649 transitions. [2021-03-11 14:34:50,295 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 649 transitions. Word has length 19 [2021-03-11 14:34:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:50,296 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 649 transitions. [2021-03-11 14:34:50,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 649 transitions. [2021-03-11 14:34:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:50,296 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:50,296 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:50,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-03-11 14:34:50,296 INFO L428 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:50,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1458304426, now seen corresponding path program 207 times [2021-03-11 14:34:50,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:50,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251935074] [2021-03-11 14:34:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:50,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:50,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:50,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:50,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:50,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:50,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:50,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:50,336 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:50,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:50,375 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:50,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:50,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251935074] [2021-03-11 14:34:50,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:50,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:50,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898356380] [2021-03-11 14:34:50,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:50,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:50,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:50,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:50,399 INFO L87 Difference]: Start difference. First operand 216 states and 649 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:50,459 INFO L93 Difference]: Finished difference Result 368 states and 949 transitions. [2021-03-11 14:34:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:50,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:50,460 INFO L225 Difference]: With dead ends: 368 [2021-03-11 14:34:50,460 INFO L226 Difference]: Without dead ends: 352 [2021-03-11 14:34:50,460 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-03-11 14:34:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 222. [2021-03-11 14:34:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.986425339366516) internal successors, (660), 221 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 660 transitions. [2021-03-11 14:34:50,464 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 660 transitions. Word has length 19 [2021-03-11 14:34:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:50,465 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 660 transitions. [2021-03-11 14:34:50,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 660 transitions. [2021-03-11 14:34:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:50,465 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:50,465 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:50,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-03-11 14:34:50,465 INFO L428 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash 482099676, now seen corresponding path program 208 times [2021-03-11 14:34:50,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:50,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066288305] [2021-03-11 14:34:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:50,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:50,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:50,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:50,484 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:50,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:50,494 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:50,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:50,508 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:50,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:50,527 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:50,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:50,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066288305] [2021-03-11 14:34:50,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:50,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:50,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962748700] [2021-03-11 14:34:50,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:50,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:50,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:50,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:50,545 INFO L87 Difference]: Start difference. First operand 222 states and 660 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:50,606 INFO L93 Difference]: Finished difference Result 365 states and 938 transitions. [2021-03-11 14:34:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:50,607 INFO L225 Difference]: With dead ends: 365 [2021-03-11 14:34:50,607 INFO L226 Difference]: Without dead ends: 346 [2021-03-11 14:34:50,607 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-03-11 14:34:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 216. [2021-03-11 14:34:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.9953488372093022) internal successors, (644), 215 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 644 transitions. [2021-03-11 14:34:50,610 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 644 transitions. Word has length 19 [2021-03-11 14:34:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:50,610 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 644 transitions. [2021-03-11 14:34:50,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 644 transitions. [2021-03-11 14:34:50,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:50,611 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:50,611 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:50,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-03-11 14:34:50,611 INFO L428 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2110104008, now seen corresponding path program 209 times [2021-03-11 14:34:50,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:50,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648500062] [2021-03-11 14:34:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:50,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:50,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:50,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:50,628 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:50,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:50,638 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:50,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:50,654 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:50,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:50,673 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:50,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:50,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648500062] [2021-03-11 14:34:50,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:50,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:50,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84838810] [2021-03-11 14:34:50,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:50,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:50,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:50,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:50,691 INFO L87 Difference]: Start difference. First operand 216 states and 644 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:50,746 INFO L93 Difference]: Finished difference Result 358 states and 925 transitions. [2021-03-11 14:34:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:50,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:50,747 INFO L225 Difference]: With dead ends: 358 [2021-03-11 14:34:50,747 INFO L226 Difference]: Without dead ends: 346 [2021-03-11 14:34:50,747 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-03-11 14:34:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 220. [2021-03-11 14:34:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.9771689497716896) internal successors, (652), 219 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 652 transitions. [2021-03-11 14:34:50,750 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 652 transitions. Word has length 19 [2021-03-11 14:34:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:50,750 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 652 transitions. [2021-03-11 14:34:50,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 652 transitions. [2021-03-11 14:34:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:50,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:50,751 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:50,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-03-11 14:34:50,751 INFO L428 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:50,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:50,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1325988758, now seen corresponding path program 210 times [2021-03-11 14:34:50,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:50,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812094959] [2021-03-11 14:34:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:50,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:50,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:50,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:50,767 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:50,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:50,777 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:50,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:50,791 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:50,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:50,809 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:50,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:50,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812094959] [2021-03-11 14:34:50,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:50,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:50,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524760645] [2021-03-11 14:34:50,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:50,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:50,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:50,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:50,827 INFO L87 Difference]: Start difference. First operand 220 states and 652 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:50,890 INFO L93 Difference]: Finished difference Result 359 states and 923 transitions. [2021-03-11 14:34:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:50,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:50,891 INFO L225 Difference]: With dead ends: 359 [2021-03-11 14:34:50,891 INFO L226 Difference]: Without dead ends: 337 [2021-03-11 14:34:50,891 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-03-11 14:34:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 211. [2021-03-11 14:34:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 3.0095238095238095) internal successors, (632), 210 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 632 transitions. [2021-03-11 14:34:50,894 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 632 transitions. Word has length 19 [2021-03-11 14:34:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:50,894 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 632 transitions. [2021-03-11 14:34:50,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 632 transitions. [2021-03-11 14:34:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:50,894 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:50,894 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:50,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-03-11 14:34:50,894 INFO L428 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:50,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:50,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1946024220, now seen corresponding path program 211 times [2021-03-11 14:34:50,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:50,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699618130] [2021-03-11 14:34:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:50,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:50,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:50,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:50,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:50,910 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:50,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:50,920 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:50,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:50,934 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:50,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:50,953 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:50,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:50,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699618130] [2021-03-11 14:34:50,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:50,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:50,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214373340] [2021-03-11 14:34:50,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:50,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:50,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:50,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:50,971 INFO L87 Difference]: Start difference. First operand 211 states and 632 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:51,026 INFO L93 Difference]: Finished difference Result 335 states and 868 transitions. [2021-03-11 14:34:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:51,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:51,027 INFO L225 Difference]: With dead ends: 335 [2021-03-11 14:34:51,027 INFO L226 Difference]: Without dead ends: 325 [2021-03-11 14:34:51,027 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-03-11 14:34:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 215. [2021-03-11 14:34:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0) internal successors, (642), 214 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 642 transitions. [2021-03-11 14:34:51,030 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 642 transitions. Word has length 19 [2021-03-11 14:34:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:51,030 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 642 transitions. [2021-03-11 14:34:51,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 642 transitions. [2021-03-11 14:34:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:51,030 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:51,030 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:51,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-03-11 14:34:51,030 INFO L428 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:51,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:51,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1604240578, now seen corresponding path program 212 times [2021-03-11 14:34:51,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:51,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143802004] [2021-03-11 14:34:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:51,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:51,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:51,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:51,047 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:51,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:51,057 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:51,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:51,071 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:51,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:51,089 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:51,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:51,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143802004] [2021-03-11 14:34:51,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:51,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:51,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629363037] [2021-03-11 14:34:51,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:51,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:51,108 INFO L87 Difference]: Start difference. First operand 215 states and 642 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:51,167 INFO L93 Difference]: Finished difference Result 337 states and 871 transitions. [2021-03-11 14:34:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:51,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:51,167 INFO L225 Difference]: With dead ends: 337 [2021-03-11 14:34:51,167 INFO L226 Difference]: Without dead ends: 323 [2021-03-11 14:34:51,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:51,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-03-11 14:34:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 213. [2021-03-11 14:34:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 3.0047169811320753) internal successors, (637), 212 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 637 transitions. [2021-03-11 14:34:51,170 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 637 transitions. Word has length 19 [2021-03-11 14:34:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:51,170 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 637 transitions. [2021-03-11 14:34:51,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 637 transitions. [2021-03-11 14:34:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:51,171 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:51,171 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:51,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-03-11 14:34:51,171 INFO L428 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:51,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:51,171 INFO L82 PathProgramCache]: Analyzing trace with hash -738002118, now seen corresponding path program 213 times [2021-03-11 14:34:51,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:51,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52904863] [2021-03-11 14:34:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:51,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:51,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:51,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:51,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:51,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:51,211 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:51,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:51,236 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:51,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:51,254 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:51,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:51,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52904863] [2021-03-11 14:34:51,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:51,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:51,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327449453] [2021-03-11 14:34:51,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:51,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:51,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:51,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:51,273 INFO L87 Difference]: Start difference. First operand 213 states and 637 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:51,315 INFO L93 Difference]: Finished difference Result 336 states and 868 transitions. [2021-03-11 14:34:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:51,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:51,315 INFO L225 Difference]: With dead ends: 336 [2021-03-11 14:34:51,315 INFO L226 Difference]: Without dead ends: 326 [2021-03-11 14:34:51,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:51,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-03-11 14:34:51,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 215. [2021-03-11 14:34:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.9906542056074765) internal successors, (640), 214 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 640 transitions. [2021-03-11 14:34:51,318 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 640 transitions. Word has length 19 [2021-03-11 14:34:51,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:51,318 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 640 transitions. [2021-03-11 14:34:51,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,319 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 640 transitions. [2021-03-11 14:34:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:51,319 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:51,319 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:51,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-03-11 14:34:51,319 INFO L428 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:51,319 INFO L82 PathProgramCache]: Analyzing trace with hash 751402878, now seen corresponding path program 214 times [2021-03-11 14:34:51,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:51,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160686609] [2021-03-11 14:34:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:51,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:51,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:51,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:51,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:51,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:51,347 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:51,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:51,372 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:51,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:51,390 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:51,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:51,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160686609] [2021-03-11 14:34:51,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:51,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:51,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791973128] [2021-03-11 14:34:51,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:51,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:51,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:51,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:51,408 INFO L87 Difference]: Start difference. First operand 215 states and 640 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:51,466 INFO L93 Difference]: Finished difference Result 339 states and 873 transitions. [2021-03-11 14:34:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:51,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:51,466 INFO L225 Difference]: With dead ends: 339 [2021-03-11 14:34:51,466 INFO L226 Difference]: Without dead ends: 324 [2021-03-11 14:34:51,466 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-03-11 14:34:51,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 213. [2021-03-11 14:34:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9952830188679247) internal successors, (635), 212 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 635 transitions. [2021-03-11 14:34:51,470 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 635 transitions. Word has length 19 [2021-03-11 14:34:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:51,471 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 635 transitions. [2021-03-11 14:34:51,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,471 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 635 transitions. [2021-03-11 14:34:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:51,471 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:51,471 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:51,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-03-11 14:34:51,471 INFO L428 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:51,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1617641338, now seen corresponding path program 215 times [2021-03-11 14:34:51,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:51,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644187968] [2021-03-11 14:34:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:51,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:51,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:51,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:51,491 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:51,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:51,502 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:51,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:51,516 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:51,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:51,535 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:51,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:51,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644187968] [2021-03-11 14:34:51,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:51,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:51,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660802818] [2021-03-11 14:34:51,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:51,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:51,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:51,554 INFO L87 Difference]: Start difference. First operand 213 states and 635 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:51,617 INFO L93 Difference]: Finished difference Result 338 states and 871 transitions. [2021-03-11 14:34:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:51,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:51,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:51,618 INFO L225 Difference]: With dead ends: 338 [2021-03-11 14:34:51,618 INFO L226 Difference]: Without dead ends: 326 [2021-03-11 14:34:51,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-03-11 14:34:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 217. [2021-03-11 14:34:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.9768518518518516) internal successors, (643), 216 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 643 transitions. [2021-03-11 14:34:51,621 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 643 transitions. Word has length 19 [2021-03-11 14:34:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:51,621 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 643 transitions. [2021-03-11 14:34:51,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 643 transitions. [2021-03-11 14:34:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:51,621 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:51,621 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:51,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-03-11 14:34:51,622 INFO L428 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1932623460, now seen corresponding path program 216 times [2021-03-11 14:34:51,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:51,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618636863] [2021-03-11 14:34:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:51,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:51,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:51,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:51,638 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:51,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:51,648 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:51,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:51,662 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:51,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:51,680 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:51,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:51,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618636863] [2021-03-11 14:34:51,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:51,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:51,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966971741] [2021-03-11 14:34:51,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:51,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:51,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:51,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:51,699 INFO L87 Difference]: Start difference. First operand 217 states and 643 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:51,756 INFO L93 Difference]: Finished difference Result 339 states and 869 transitions. [2021-03-11 14:34:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:51,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:51,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:51,757 INFO L225 Difference]: With dead ends: 339 [2021-03-11 14:34:51,757 INFO L226 Difference]: Without dead ends: 317 [2021-03-11 14:34:51,757 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-03-11 14:34:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 208. [2021-03-11 14:34:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 3.0193236714975846) internal successors, (625), 207 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 625 transitions. [2021-03-11 14:34:51,760 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 625 transitions. Word has length 19 [2021-03-11 14:34:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:51,760 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 625 transitions. [2021-03-11 14:34:51,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 625 transitions. [2021-03-11 14:34:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:51,760 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:51,760 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:51,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-03-11 14:34:51,760 INFO L428 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:51,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1434799680, now seen corresponding path program 217 times [2021-03-11 14:34:51,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:51,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473065991] [2021-03-11 14:34:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:51,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:51,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:51,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:51,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:51,790 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:51,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:51,811 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:51,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:51,830 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:51,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:51,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473065991] [2021-03-11 14:34:51,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:51,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:51,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125868146] [2021-03-11 14:34:51,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:51,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:51,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:51,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:51,851 INFO L87 Difference]: Start difference. First operand 208 states and 625 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:51,913 INFO L93 Difference]: Finished difference Result 338 states and 886 transitions. [2021-03-11 14:34:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:51,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:51,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:51,914 INFO L225 Difference]: With dead ends: 338 [2021-03-11 14:34:51,914 INFO L226 Difference]: Without dead ends: 324 [2021-03-11 14:34:51,914 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-03-11 14:34:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 214. [2021-03-11 14:34:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.023474178403756) internal successors, (644), 213 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 644 transitions. [2021-03-11 14:34:51,917 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 644 transitions. Word has length 19 [2021-03-11 14:34:51,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:51,917 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 644 transitions. [2021-03-11 14:34:51,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:51,917 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 644 transitions. [2021-03-11 14:34:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:51,917 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:51,917 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:51,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-03-11 14:34:51,917 INFO L428 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:51,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1740037786, now seen corresponding path program 218 times [2021-03-11 14:34:51,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:51,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819242836] [2021-03-11 14:34:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:51,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:51,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:51,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:51,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:51,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:51,950 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:51,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:51,976 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:51,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:51,998 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:51,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:52,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819242836] [2021-03-11 14:34:52,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:52,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:52,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702032871] [2021-03-11 14:34:52,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:52,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:52,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:52,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:52,016 INFO L87 Difference]: Start difference. First operand 214 states and 644 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:52,058 INFO L93 Difference]: Finished difference Result 334 states and 875 transitions. [2021-03-11 14:34:52,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:52,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:52,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:52,059 INFO L225 Difference]: With dead ends: 334 [2021-03-11 14:34:52,059 INFO L226 Difference]: Without dead ends: 322 [2021-03-11 14:34:52,059 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:52,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-03-11 14:34:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 212. [2021-03-11 14:34:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.028436018957346) internal successors, (639), 211 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 639 transitions. [2021-03-11 14:34:52,062 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 639 transitions. Word has length 19 [2021-03-11 14:34:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:52,062 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 639 transitions. [2021-03-11 14:34:52,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 639 transitions. [2021-03-11 14:34:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:52,062 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:52,062 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:52,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-03-11 14:34:52,062 INFO L428 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:52,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:52,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1249226658, now seen corresponding path program 219 times [2021-03-11 14:34:52,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:52,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31192564] [2021-03-11 14:34:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:52,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:52,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:52,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:52,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:52,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:52,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:52,117 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:52,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:52,143 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:52,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:52,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31192564] [2021-03-11 14:34:52,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:52,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:52,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729085059] [2021-03-11 14:34:52,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:52,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:52,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:52,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:52,170 INFO L87 Difference]: Start difference. First operand 212 states and 639 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:52,238 INFO L93 Difference]: Finished difference Result 342 states and 896 transitions. [2021-03-11 14:34:52,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:52,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:52,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:52,239 INFO L225 Difference]: With dead ends: 342 [2021-03-11 14:34:52,239 INFO L226 Difference]: Without dead ends: 328 [2021-03-11 14:34:52,239 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:52,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-03-11 14:34:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 216. [2021-03-11 14:34:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0093023255813955) internal successors, (647), 215 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 647 transitions. [2021-03-11 14:34:52,242 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 647 transitions. Word has length 19 [2021-03-11 14:34:52,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:52,242 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 647 transitions. [2021-03-11 14:34:52,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 647 transitions. [2021-03-11 14:34:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:52,242 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:52,242 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:52,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-03-11 14:34:52,243 INFO L428 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:52,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:52,243 INFO L82 PathProgramCache]: Analyzing trace with hash -55199962, now seen corresponding path program 220 times [2021-03-11 14:34:52,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:52,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627565332] [2021-03-11 14:34:52,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:52,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:52,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:52,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:52,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:52,271 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:52,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:52,285 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:52,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:52,303 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:52,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:52,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627565332] [2021-03-11 14:34:52,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:52,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:52,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700666953] [2021-03-11 14:34:52,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:52,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:52,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:52,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:52,322 INFO L87 Difference]: Start difference. First operand 216 states and 647 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:52,378 INFO L93 Difference]: Finished difference Result 340 states and 888 transitions. [2021-03-11 14:34:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:52,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:52,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:52,379 INFO L225 Difference]: With dead ends: 340 [2021-03-11 14:34:52,379 INFO L226 Difference]: Without dead ends: 324 [2021-03-11 14:34:52,379 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-03-11 14:34:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 212. [2021-03-11 14:34:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.018957345971564) internal successors, (637), 211 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 637 transitions. [2021-03-11 14:34:52,382 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 637 transitions. Word has length 19 [2021-03-11 14:34:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:52,382 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 637 transitions. [2021-03-11 14:34:52,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,382 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 637 transitions. [2021-03-11 14:34:52,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:52,382 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:52,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:52,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-03-11 14:34:52,383 INFO L428 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:52,383 INFO L82 PathProgramCache]: Analyzing trace with hash 2019699708, now seen corresponding path program 221 times [2021-03-11 14:34:52,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:52,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012181351] [2021-03-11 14:34:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:52,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:52,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:52,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:52,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:52,408 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:52,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:52,422 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:52,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:52,441 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:52,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:52,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012181351] [2021-03-11 14:34:52,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:52,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:52,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899979596] [2021-03-11 14:34:52,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:52,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:52,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:52,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:52,460 INFO L87 Difference]: Start difference. First operand 212 states and 637 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:52,502 INFO L93 Difference]: Finished difference Result 332 states and 869 transitions. [2021-03-11 14:34:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:52,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:52,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:52,503 INFO L225 Difference]: With dead ends: 332 [2021-03-11 14:34:52,503 INFO L226 Difference]: Without dead ends: 322 [2021-03-11 14:34:52,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:52,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-03-11 14:34:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 214. [2021-03-11 14:34:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.004694835680751) internal successors, (640), 213 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 640 transitions. [2021-03-11 14:34:52,506 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 640 transitions. Word has length 19 [2021-03-11 14:34:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:52,506 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 640 transitions. [2021-03-11 14:34:52,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 640 transitions. [2021-03-11 14:34:52,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:52,506 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:52,506 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:52,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-03-11 14:34:52,506 INFO L428 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:52,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1530565090, now seen corresponding path program 222 times [2021-03-11 14:34:52,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:52,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101030748] [2021-03-11 14:34:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:52,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:52,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:52,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:52,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:52,532 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:52,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:52,546 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:52,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:52,565 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:52,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:52,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101030748] [2021-03-11 14:34:52,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:52,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:52,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058008593] [2021-03-11 14:34:52,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:52,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:52,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:52,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:52,583 INFO L87 Difference]: Start difference. First operand 214 states and 640 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:52,645 INFO L93 Difference]: Finished difference Result 334 states and 872 transitions. [2021-03-11 14:34:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:52,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:52,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:52,646 INFO L225 Difference]: With dead ends: 334 [2021-03-11 14:34:52,646 INFO L226 Difference]: Without dead ends: 318 [2021-03-11 14:34:52,646 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:52,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-03-11 14:34:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 210. [2021-03-11 14:34:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.0239234449760763) internal successors, (632), 209 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 632 transitions. [2021-03-11 14:34:52,649 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 632 transitions. Word has length 19 [2021-03-11 14:34:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:52,649 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 632 transitions. [2021-03-11 14:34:52,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 632 transitions. [2021-03-11 14:34:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:52,650 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:52,650 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:52,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-03-11 14:34:52,650 INFO L428 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:52,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:52,650 INFO L82 PathProgramCache]: Analyzing trace with hash -165638174, now seen corresponding path program 223 times [2021-03-11 14:34:52,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:52,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664081116] [2021-03-11 14:34:52,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:52,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:52,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:52,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:52,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:52,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:52,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:52,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:52,706 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:52,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:52,730 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:52,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:52,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664081116] [2021-03-11 14:34:52,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:52,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:52,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597818044] [2021-03-11 14:34:52,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:52,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:52,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:52,751 INFO L87 Difference]: Start difference. First operand 210 states and 632 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:52,812 INFO L93 Difference]: Finished difference Result 340 states and 889 transitions. [2021-03-11 14:34:52,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:52,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:52,813 INFO L225 Difference]: With dead ends: 340 [2021-03-11 14:34:52,813 INFO L226 Difference]: Without dead ends: 326 [2021-03-11 14:34:52,813 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:52,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-03-11 14:34:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 214. [2021-03-11 14:34:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0140845070422535) internal successors, (642), 213 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 642 transitions. [2021-03-11 14:34:52,816 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 642 transitions. Word has length 19 [2021-03-11 14:34:52,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:52,816 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 642 transitions. [2021-03-11 14:34:52,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 642 transitions. [2021-03-11 14:34:52,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:52,817 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:52,817 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:52,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-03-11 14:34:52,817 INFO L428 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:52,817 INFO L82 PathProgramCache]: Analyzing trace with hash 954491656, now seen corresponding path program 224 times [2021-03-11 14:34:52,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:52,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340578878] [2021-03-11 14:34:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:52,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:52,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:52,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:52,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:52,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:52,858 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:52,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:52,879 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:52,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:52,898 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:52,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:52,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340578878] [2021-03-11 14:34:52,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:52,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:52,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80260093] [2021-03-11 14:34:52,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:52,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:52,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:52,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:52,917 INFO L87 Difference]: Start difference. First operand 214 states and 642 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:52,962 INFO L93 Difference]: Finished difference Result 336 states and 878 transitions. [2021-03-11 14:34:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:52,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:52,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:52,963 INFO L225 Difference]: With dead ends: 336 [2021-03-11 14:34:52,963 INFO L226 Difference]: Without dead ends: 324 [2021-03-11 14:34:52,963 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:52,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-03-11 14:34:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 212. [2021-03-11 14:34:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.018957345971564) internal successors, (637), 211 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 637 transitions. [2021-03-11 14:34:52,966 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 637 transitions. Word has length 19 [2021-03-11 14:34:52,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:52,966 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 637 transitions. [2021-03-11 14:34:52,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 637 transitions. [2021-03-11 14:34:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:52,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:52,967 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:52,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-03-11 14:34:52,967 INFO L428 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:52,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:52,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1238723554, now seen corresponding path program 225 times [2021-03-11 14:34:52,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:52,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940481328] [2021-03-11 14:34:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:52,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:52,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:52,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:52,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:52,986 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:52,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:53,004 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:53,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:53,018 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:53,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:53,037 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:53,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:53,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940481328] [2021-03-11 14:34:53,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:53,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:53,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318513580] [2021-03-11 14:34:53,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:53,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:53,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:53,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:53,055 INFO L87 Difference]: Start difference. First operand 212 states and 637 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:53,110 INFO L93 Difference]: Finished difference Result 346 states and 904 transitions. [2021-03-11 14:34:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:53,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:53,111 INFO L225 Difference]: With dead ends: 346 [2021-03-11 14:34:53,111 INFO L226 Difference]: Without dead ends: 332 [2021-03-11 14:34:53,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-03-11 14:34:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 217. [2021-03-11 14:34:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.9953703703703702) internal successors, (647), 216 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 647 transitions. [2021-03-11 14:34:53,115 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 647 transitions. Word has length 19 [2021-03-11 14:34:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:53,115 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 647 transitions. [2021-03-11 14:34:53,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 647 transitions. [2021-03-11 14:34:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:53,115 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:53,115 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:53,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-03-11 14:34:53,115 INFO L428 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:53,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1880780472, now seen corresponding path program 226 times [2021-03-11 14:34:53,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:53,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362299104] [2021-03-11 14:34:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:53,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:53,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:53,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:53,131 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:53,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:53,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:53,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:53,163 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:53,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:53,182 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:53,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:53,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362299104] [2021-03-11 14:34:53,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:53,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:53,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707110753] [2021-03-11 14:34:53,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:53,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:53,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:53,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:53,200 INFO L87 Difference]: Start difference. First operand 217 states and 647 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:53,259 INFO L93 Difference]: Finished difference Result 345 states and 897 transitions. [2021-03-11 14:34:53,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:53,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:53,260 INFO L225 Difference]: With dead ends: 345 [2021-03-11 14:34:53,260 INFO L226 Difference]: Without dead ends: 327 [2021-03-11 14:34:53,260 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-03-11 14:34:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 212. [2021-03-11 14:34:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.009478672985782) internal successors, (635), 211 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 635 transitions. [2021-03-11 14:34:53,263 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 635 transitions. Word has length 19 [2021-03-11 14:34:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:53,263 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 635 transitions. [2021-03-11 14:34:53,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 635 transitions. [2021-03-11 14:34:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:53,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:53,263 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:53,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-03-11 14:34:53,263 INFO L428 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:53,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2030202812, now seen corresponding path program 227 times [2021-03-11 14:34:53,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:53,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146746649] [2021-03-11 14:34:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:53,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:53,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:53,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:53,279 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:53,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:53,297 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:53,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:53,322 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:53,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:53,341 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:53,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:53,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146746649] [2021-03-11 14:34:53,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:53,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:53,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804624102] [2021-03-11 14:34:53,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:53,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:53,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:53,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:53,359 INFO L87 Difference]: Start difference. First operand 212 states and 635 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:53,399 INFO L93 Difference]: Finished difference Result 335 states and 874 transitions. [2021-03-11 14:34:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:53,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:53,400 INFO L225 Difference]: With dead ends: 335 [2021-03-11 14:34:53,400 INFO L226 Difference]: Without dead ends: 325 [2021-03-11 14:34:53,400 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-03-11 14:34:53,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 214. [2021-03-11 14:34:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.995305164319249) internal successors, (638), 213 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 638 transitions. [2021-03-11 14:34:53,403 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 638 transitions. Word has length 19 [2021-03-11 14:34:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:53,403 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 638 transitions. [2021-03-11 14:34:53,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 638 transitions. [2021-03-11 14:34:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:53,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:53,404 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:53,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-03-11 14:34:53,404 INFO L428 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:53,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:53,404 INFO L82 PathProgramCache]: Analyzing trace with hash -775359488, now seen corresponding path program 228 times [2021-03-11 14:34:53,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:53,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761115245] [2021-03-11 14:34:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:53,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:53,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:53,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:53,420 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:53,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:53,438 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:53,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:53,462 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:53,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:53,481 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:53,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:53,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761115245] [2021-03-11 14:34:53,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:53,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:53,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653976504] [2021-03-11 14:34:53,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:53,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:53,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:53,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:53,500 INFO L87 Difference]: Start difference. First operand 214 states and 638 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:53,557 INFO L93 Difference]: Finished difference Result 338 states and 879 transitions. [2021-03-11 14:34:53,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:53,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:53,558 INFO L225 Difference]: With dead ends: 338 [2021-03-11 14:34:53,558 INFO L226 Difference]: Without dead ends: 321 [2021-03-11 14:34:53,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:53,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-03-11 14:34:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 210. [2021-03-11 14:34:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.014354066985646) internal successors, (630), 209 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 630 transitions. [2021-03-11 14:34:53,561 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 630 transitions. Word has length 19 [2021-03-11 14:34:53,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:53,561 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 630 transitions. [2021-03-11 14:34:53,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,562 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 630 transitions. [2021-03-11 14:34:53,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:53,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:53,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:53,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-03-11 14:34:53,562 INFO L428 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:53,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:53,562 INFO L82 PathProgramCache]: Analyzing trace with hash -155135070, now seen corresponding path program 229 times [2021-03-11 14:34:53,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:53,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185532457] [2021-03-11 14:34:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:53,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:53,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:53,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:53,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:53,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:53,589 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:53,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:53,602 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:53,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:53,621 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:53,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:53,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185532457] [2021-03-11 14:34:53,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:53,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:53,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867838521] [2021-03-11 14:34:53,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:53,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:53,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:53,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:53,640 INFO L87 Difference]: Start difference. First operand 210 states and 630 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:53,698 INFO L93 Difference]: Finished difference Result 348 states and 911 transitions. [2021-03-11 14:34:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:53,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:53,699 INFO L225 Difference]: With dead ends: 348 [2021-03-11 14:34:53,699 INFO L226 Difference]: Without dead ends: 334 [2021-03-11 14:34:53,699 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-03-11 14:34:53,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 218. [2021-03-11 14:34:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 3.013824884792627) internal successors, (654), 217 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 654 transitions. [2021-03-11 14:34:53,702 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 654 transitions. Word has length 19 [2021-03-11 14:34:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:53,702 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 654 transitions. [2021-03-11 14:34:53,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 654 transitions. [2021-03-11 14:34:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:53,702 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:53,702 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:53,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-03-11 14:34:53,702 INFO L428 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:53,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1038891626, now seen corresponding path program 230 times [2021-03-11 14:34:53,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:53,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027599655] [2021-03-11 14:34:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:53,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:53,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:53,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:53,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:53,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:53,728 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:53,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:53,742 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:53,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:53,760 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:53,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:53,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027599655] [2021-03-11 14:34:53,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:53,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:53,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185774699] [2021-03-11 14:34:53,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:53,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:53,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:53,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:53,779 INFO L87 Difference]: Start difference. First operand 218 states and 654 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:53,833 INFO L93 Difference]: Finished difference Result 346 states and 903 transitions. [2021-03-11 14:34:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:53,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:53,833 INFO L225 Difference]: With dead ends: 346 [2021-03-11 14:34:53,833 INFO L226 Difference]: Without dead ends: 330 [2021-03-11 14:34:53,834 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-03-11 14:34:53,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 214. [2021-03-11 14:34:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0140845070422535) internal successors, (642), 213 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 642 transitions. [2021-03-11 14:34:53,836 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 642 transitions. Word has length 19 [2021-03-11 14:34:53,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:53,836 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 642 transitions. [2021-03-11 14:34:53,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 642 transitions. [2021-03-11 14:34:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:53,837 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:53,837 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:53,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-03-11 14:34:53,837 INFO L428 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:53,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1455805888, now seen corresponding path program 231 times [2021-03-11 14:34:53,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:53,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973647774] [2021-03-11 14:34:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:53,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:53,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:53,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:53,856 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:53,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:53,868 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:53,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:53,885 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:53,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:53,907 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:53,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:53,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973647774] [2021-03-11 14:34:53,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:53,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:53,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367212015] [2021-03-11 14:34:53,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:53,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:53,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:53,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:53,927 INFO L87 Difference]: Start difference. First operand 214 states and 642 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:53,982 INFO L93 Difference]: Finished difference Result 350 states and 912 transitions. [2021-03-11 14:34:53,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:53,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:53,982 INFO L225 Difference]: With dead ends: 350 [2021-03-11 14:34:53,982 INFO L226 Difference]: Without dead ends: 336 [2021-03-11 14:34:53,983 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-03-11 14:34:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 219. [2021-03-11 14:34:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.9908256880733943) internal successors, (652), 218 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 652 transitions. [2021-03-11 14:34:53,985 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 652 transitions. Word has length 19 [2021-03-11 14:34:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:53,986 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 652 transitions. [2021-03-11 14:34:53,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 652 transitions. [2021-03-11 14:34:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:53,986 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:53,986 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:53,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-03-11 14:34:53,986 INFO L428 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:53,986 INFO L82 PathProgramCache]: Analyzing trace with hash 813748970, now seen corresponding path program 232 times [2021-03-11 14:34:53,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:53,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656675487] [2021-03-11 14:34:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:53,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:53,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:53,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:53,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:54,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:54,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:54,013 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:54,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:54,027 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:54,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:54,048 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:54,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:54,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656675487] [2021-03-11 14:34:54,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:54,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:54,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652035528] [2021-03-11 14:34:54,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:54,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:54,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:54,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:54,067 INFO L87 Difference]: Start difference. First operand 219 states and 652 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:54,125 INFO L93 Difference]: Finished difference Result 349 states and 905 transitions. [2021-03-11 14:34:54,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:54,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:54,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:54,125 INFO L225 Difference]: With dead ends: 349 [2021-03-11 14:34:54,125 INFO L226 Difference]: Without dead ends: 331 [2021-03-11 14:34:54,126 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-03-11 14:34:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 214. [2021-03-11 14:34:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.995305164319249) internal successors, (638), 213 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 638 transitions. [2021-03-11 14:34:54,128 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 638 transitions. Word has length 19 [2021-03-11 14:34:54,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:54,129 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 638 transitions. [2021-03-11 14:34:54,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 638 transitions. [2021-03-11 14:34:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:54,129 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:54,129 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:54,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-03-11 14:34:54,129 INFO L428 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:54,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:54,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1685003648, now seen corresponding path program 233 times [2021-03-11 14:34:54,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:54,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243779257] [2021-03-11 14:34:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:54,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:54,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:54,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:54,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:54,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:54,159 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:54,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:54,173 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:54,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:54,192 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:54,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:54,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243779257] [2021-03-11 14:34:54,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:54,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:54,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175826805] [2021-03-11 14:34:54,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:54,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:54,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:54,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:54,210 INFO L87 Difference]: Start difference. First operand 214 states and 638 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:54,265 INFO L93 Difference]: Finished difference Result 345 states and 897 transitions. [2021-03-11 14:34:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:54,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:54,266 INFO L225 Difference]: With dead ends: 345 [2021-03-11 14:34:54,266 INFO L226 Difference]: Without dead ends: 333 [2021-03-11 14:34:54,266 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:54,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-03-11 14:34:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 218. [2021-03-11 14:34:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9769585253456223) internal successors, (646), 217 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 646 transitions. [2021-03-11 14:34:54,269 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 646 transitions. Word has length 19 [2021-03-11 14:34:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:54,269 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 646 transitions. [2021-03-11 14:34:54,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,269 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 646 transitions. [2021-03-11 14:34:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:54,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:54,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:54,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-03-11 14:34:54,270 INFO L428 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:54,270 INFO L82 PathProgramCache]: Analyzing trace with hash -826129118, now seen corresponding path program 234 times [2021-03-11 14:34:54,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:54,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374875120] [2021-03-11 14:34:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:54,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:54,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:54,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:54,286 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:54,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:54,296 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:54,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:54,310 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:54,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:54,328 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:54,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:54,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374875120] [2021-03-11 14:34:54,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:54,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:54,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510255903] [2021-03-11 14:34:54,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:54,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:54,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:54,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:54,347 INFO L87 Difference]: Start difference. First operand 218 states and 646 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:54,410 INFO L93 Difference]: Finished difference Result 346 states and 895 transitions. [2021-03-11 14:34:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:54,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:54,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:54,411 INFO L225 Difference]: With dead ends: 346 [2021-03-11 14:34:54,411 INFO L226 Difference]: Without dead ends: 325 [2021-03-11 14:34:54,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-03-11 14:34:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 210. [2021-03-11 14:34:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.0047846889952154) internal successors, (628), 209 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 628 transitions. [2021-03-11 14:34:54,414 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 628 transitions. Word has length 19 [2021-03-11 14:34:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:54,414 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 628 transitions. [2021-03-11 14:34:54,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 628 transitions. [2021-03-11 14:34:54,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:54,414 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:54,414 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:54,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-03-11 14:34:54,414 INFO L428 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:54,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1007007176, now seen corresponding path program 235 times [2021-03-11 14:34:54,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:54,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676574289] [2021-03-11 14:34:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:54,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:54,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:54,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:54,444 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:54,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:54,455 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:54,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:54,471 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:54,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:54,490 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:54,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:54,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676574289] [2021-03-11 14:34:54,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:54,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:54,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231775744] [2021-03-11 14:34:54,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:54,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:54,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:54,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:54,508 INFO L87 Difference]: Start difference. First operand 210 states and 628 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:54,548 INFO L93 Difference]: Finished difference Result 327 states and 849 transitions. [2021-03-11 14:34:54,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:54,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:54,549 INFO L225 Difference]: With dead ends: 327 [2021-03-11 14:34:54,549 INFO L226 Difference]: Without dead ends: 317 [2021-03-11 14:34:54,549 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-03-11 14:34:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 214. [2021-03-11 14:34:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.995305164319249) internal successors, (638), 213 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 638 transitions. [2021-03-11 14:34:54,552 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 638 transitions. Word has length 19 [2021-03-11 14:34:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:54,552 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 638 transitions. [2021-03-11 14:34:54,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 638 transitions. [2021-03-11 14:34:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:54,552 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:54,552 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:54,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-03-11 14:34:54,552 INFO L428 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:54,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:54,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1751709674, now seen corresponding path program 236 times [2021-03-11 14:34:54,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:54,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119513995] [2021-03-11 14:34:54,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:54,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:54,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:54,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:54,568 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:54,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:54,578 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:54,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:54,592 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:54,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:54,611 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:54,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:54,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119513995] [2021-03-11 14:34:54,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:54,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:54,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724579219] [2021-03-11 14:34:54,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:54,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:54,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:54,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:54,629 INFO L87 Difference]: Start difference. First operand 214 states and 638 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:54,688 INFO L93 Difference]: Finished difference Result 329 states and 852 transitions. [2021-03-11 14:34:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:54,688 INFO L225 Difference]: With dead ends: 329 [2021-03-11 14:34:54,688 INFO L226 Difference]: Without dead ends: 315 [2021-03-11 14:34:54,688 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-03-11 14:34:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 212. [2021-03-11 14:34:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.0) internal successors, (633), 211 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 633 transitions. [2021-03-11 14:34:54,691 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 633 transitions. Word has length 19 [2021-03-11 14:34:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:54,691 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 633 transitions. [2021-03-11 14:34:54,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 633 transitions. [2021-03-11 14:34:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:54,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:54,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:54,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-03-11 14:34:54,692 INFO L428 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1677019162, now seen corresponding path program 237 times [2021-03-11 14:34:54,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:54,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386141256] [2021-03-11 14:34:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:54,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:54,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:54,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:54,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:54,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:54,718 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:54,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:54,743 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:54,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:54,762 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:54,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:54,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386141256] [2021-03-11 14:34:54,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:54,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:54,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652841426] [2021-03-11 14:34:54,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:54,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:54,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:54,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:54,780 INFO L87 Difference]: Start difference. First operand 212 states and 633 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:54,825 INFO L93 Difference]: Finished difference Result 328 states and 849 transitions. [2021-03-11 14:34:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:54,826 INFO L225 Difference]: With dead ends: 328 [2021-03-11 14:34:54,826 INFO L226 Difference]: Without dead ends: 318 [2021-03-11 14:34:54,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-03-11 14:34:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 214. [2021-03-11 14:34:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.9859154929577465) internal successors, (636), 213 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 636 transitions. [2021-03-11 14:34:54,829 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 636 transitions. Word has length 19 [2021-03-11 14:34:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:54,829 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 636 transitions. [2021-03-11 14:34:54,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 636 transitions. [2021-03-11 14:34:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:54,830 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:54,830 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:54,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-03-11 14:34:54,830 INFO L428 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:54,830 INFO L82 PathProgramCache]: Analyzing trace with hash -187614166, now seen corresponding path program 238 times [2021-03-11 14:34:54,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:54,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5224978] [2021-03-11 14:34:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:54,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:54,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:54,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:54,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:54,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:54,856 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:54,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:54,881 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:54,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:54,899 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:54,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:54,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5224978] [2021-03-11 14:34:54,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:54,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:54,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351289705] [2021-03-11 14:34:54,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:54,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:54,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:54,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:54,917 INFO L87 Difference]: Start difference. First operand 214 states and 636 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:54,974 INFO L93 Difference]: Finished difference Result 331 states and 854 transitions. [2021-03-11 14:34:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:54,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:54,975 INFO L225 Difference]: With dead ends: 331 [2021-03-11 14:34:54,975 INFO L226 Difference]: Without dead ends: 316 [2021-03-11 14:34:54,975 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-03-11 14:34:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 212. [2021-03-11 14:34:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.990521327014218) internal successors, (631), 211 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 631 transitions. [2021-03-11 14:34:54,978 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 631 transitions. Word has length 19 [2021-03-11 14:34:54,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:54,978 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 631 transitions. [2021-03-11 14:34:54,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:54,978 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 631 transitions. [2021-03-11 14:34:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:54,978 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:54,978 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:54,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-03-11 14:34:54,978 INFO L428 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash 678624294, now seen corresponding path program 239 times [2021-03-11 14:34:54,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:54,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367855433] [2021-03-11 14:34:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:54,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:54,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:54,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:54,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:54,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:54,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:55,004 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:55,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:55,018 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:55,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:55,037 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:55,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:55,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367855433] [2021-03-11 14:34:55,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:55,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:55,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225879048] [2021-03-11 14:34:55,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:55,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:55,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:55,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:55,055 INFO L87 Difference]: Start difference. First operand 212 states and 631 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:55,108 INFO L93 Difference]: Finished difference Result 330 states and 852 transitions. [2021-03-11 14:34:55,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:55,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:55,109 INFO L225 Difference]: With dead ends: 330 [2021-03-11 14:34:55,109 INFO L226 Difference]: Without dead ends: 318 [2021-03-11 14:34:55,109 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-03-11 14:34:55,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 216. [2021-03-11 14:34:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.972093023255814) internal successors, (639), 215 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 639 transitions. [2021-03-11 14:34:55,112 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 639 transitions. Word has length 19 [2021-03-11 14:34:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:55,112 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 639 transitions. [2021-03-11 14:34:55,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 639 transitions. [2021-03-11 14:34:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:55,113 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:55,113 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:55,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-03-11 14:34:55,113 INFO L428 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:55,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1423326792, now seen corresponding path program 240 times [2021-03-11 14:34:55,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:55,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932196432] [2021-03-11 14:34:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:55,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:55,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:55,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:55,129 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:55,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:55,140 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:55,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:55,157 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:55,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:55,182 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:55,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:55,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932196432] [2021-03-11 14:34:55,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:55,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:55,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011839528] [2021-03-11 14:34:55,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:55,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:55,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:55,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:55,200 INFO L87 Difference]: Start difference. First operand 216 states and 639 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:55,257 INFO L93 Difference]: Finished difference Result 331 states and 850 transitions. [2021-03-11 14:34:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:55,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:55,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:55,258 INFO L225 Difference]: With dead ends: 331 [2021-03-11 14:34:55,258 INFO L226 Difference]: Without dead ends: 304 [2021-03-11 14:34:55,258 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-03-11 14:34:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 202. [2021-03-11 14:34:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 3.0497512437810945) internal successors, (613), 201 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 613 transitions. [2021-03-11 14:34:55,261 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 613 transitions. Word has length 19 [2021-03-11 14:34:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:55,261 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 613 transitions. [2021-03-11 14:34:55,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 613 transitions. [2021-03-11 14:34:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:55,261 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:55,261 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:55,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-03-11 14:34:55,262 INFO L428 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:55,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:55,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1614896374, now seen corresponding path program 241 times [2021-03-11 14:34:55,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:55,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640000045] [2021-03-11 14:34:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:55,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:55,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:55,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:55,278 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:55,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:55,288 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:55,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:55,303 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:55,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:55,322 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:55,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:55,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640000045] [2021-03-11 14:34:55,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:55,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:55,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832624951] [2021-03-11 14:34:55,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:55,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:55,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:55,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:55,340 INFO L87 Difference]: Start difference. First operand 202 states and 613 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:55,381 INFO L93 Difference]: Finished difference Result 378 states and 975 transitions. [2021-03-11 14:34:55,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:55,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:55,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:55,382 INFO L225 Difference]: With dead ends: 378 [2021-03-11 14:34:55,382 INFO L226 Difference]: Without dead ends: 362 [2021-03-11 14:34:55,382 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:55,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-03-11 14:34:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 218. [2021-03-11 14:34:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 3.0092165898617513) internal successors, (653), 217 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 653 transitions. [2021-03-11 14:34:55,385 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 653 transitions. Word has length 19 [2021-03-11 14:34:55,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:55,385 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 653 transitions. [2021-03-11 14:34:55,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 653 transitions. [2021-03-11 14:34:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:55,385 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:55,386 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:55,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-03-11 14:34:55,386 INFO L428 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:55,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1989547560, now seen corresponding path program 242 times [2021-03-11 14:34:55,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:55,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982303476] [2021-03-11 14:34:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:55,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:55,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:55,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:55,402 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:55,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:55,412 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:55,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:55,427 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:55,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:55,445 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:55,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:55,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982303476] [2021-03-11 14:34:55,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:55,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:55,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820712222] [2021-03-11 14:34:55,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:55,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:55,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:55,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:55,464 INFO L87 Difference]: Start difference. First operand 218 states and 653 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:55,523 INFO L93 Difference]: Finished difference Result 376 states and 965 transitions. [2021-03-11 14:34:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:55,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:55,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:55,524 INFO L225 Difference]: With dead ends: 376 [2021-03-11 14:34:55,524 INFO L226 Difference]: Without dead ends: 354 [2021-03-11 14:34:55,524 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:55,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-03-11 14:34:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 210. [2021-03-11 14:34:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.0239234449760763) internal successors, (632), 209 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 632 transitions. [2021-03-11 14:34:55,527 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 632 transitions. Word has length 19 [2021-03-11 14:34:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:55,527 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 632 transitions. [2021-03-11 14:34:55,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 632 transitions. [2021-03-11 14:34:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:55,527 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:55,527 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:55,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-03-11 14:34:55,527 INFO L428 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:55,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1498681168, now seen corresponding path program 243 times [2021-03-11 14:34:55,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:55,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833349442] [2021-03-11 14:34:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:55,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:55,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:55,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:55,543 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:55,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:55,558 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:55,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:55,578 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:55,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:55,606 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:55,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:55,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833349442] [2021-03-11 14:34:55,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:55,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:55,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641819044] [2021-03-11 14:34:55,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:55,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:55,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:55,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:55,633 INFO L87 Difference]: Start difference. First operand 210 states and 632 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:55,687 INFO L93 Difference]: Finished difference Result 375 states and 962 transitions. [2021-03-11 14:34:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:55,687 INFO L225 Difference]: With dead ends: 375 [2021-03-11 14:34:55,688 INFO L226 Difference]: Without dead ends: 359 [2021-03-11 14:34:55,688 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-03-11 14:34:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 216. [2021-03-11 14:34:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.9906976744186045) internal successors, (643), 215 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 643 transitions. [2021-03-11 14:34:55,691 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 643 transitions. Word has length 19 [2021-03-11 14:34:55,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:55,691 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 643 transitions. [2021-03-11 14:34:55,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 643 transitions. [2021-03-11 14:34:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:55,691 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:55,691 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:55,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-03-11 14:34:55,691 INFO L428 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1820081378, now seen corresponding path program 244 times [2021-03-11 14:34:55,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:55,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699375977] [2021-03-11 14:34:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:55,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:55,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:55,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:55,708 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:55,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:55,718 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:55,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:55,732 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:55,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:55,750 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:55,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:55,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699375977] [2021-03-11 14:34:55,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:55,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:55,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147564289] [2021-03-11 14:34:55,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:55,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:55,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:55,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:55,769 INFO L87 Difference]: Start difference. First operand 216 states and 643 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:55,825 INFO L93 Difference]: Finished difference Result 372 states and 951 transitions. [2021-03-11 14:34:55,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:55,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:55,826 INFO L225 Difference]: With dead ends: 372 [2021-03-11 14:34:55,826 INFO L226 Difference]: Without dead ends: 353 [2021-03-11 14:34:55,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:55,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-03-11 14:34:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 210. [2021-03-11 14:34:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.9952153110047846) internal successors, (626), 209 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 626 transitions. [2021-03-11 14:34:55,829 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 626 transitions. Word has length 19 [2021-03-11 14:34:55,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:55,829 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 626 transitions. [2021-03-11 14:34:55,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 626 transitions. [2021-03-11 14:34:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:55,829 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:55,829 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:55,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-03-11 14:34:55,831 INFO L428 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:55,831 INFO L82 PathProgramCache]: Analyzing trace with hash -308913628, now seen corresponding path program 245 times [2021-03-11 14:34:55,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:55,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800814071] [2021-03-11 14:34:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:55,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:55,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:55,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:55,849 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:55,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:55,859 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:55,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:55,873 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:55,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:55,892 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:55,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:55,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800814071] [2021-03-11 14:34:55,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:55,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:55,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891948963] [2021-03-11 14:34:55,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:55,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:55,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:55,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:55,910 INFO L87 Difference]: Start difference. First operand 210 states and 626 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:55,965 INFO L93 Difference]: Finished difference Result 370 states and 948 transitions. [2021-03-11 14:34:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:55,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:55,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:55,965 INFO L225 Difference]: With dead ends: 370 [2021-03-11 14:34:55,965 INFO L226 Difference]: Without dead ends: 356 [2021-03-11 14:34:55,966 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:55,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-03-11 14:34:55,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 215. [2021-03-11 14:34:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.97196261682243) internal successors, (636), 214 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 636 transitions. [2021-03-11 14:34:55,969 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 636 transitions. Word has length 19 [2021-03-11 14:34:55,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:55,969 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 636 transitions. [2021-03-11 14:34:55,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 636 transitions. [2021-03-11 14:34:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:55,969 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:55,969 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:55,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-03-11 14:34:55,969 INFO L428 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:55,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:55,969 INFO L82 PathProgramCache]: Analyzing trace with hash 549366256, now seen corresponding path program 246 times [2021-03-11 14:34:55,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:55,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777564855] [2021-03-11 14:34:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:55,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:55,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:55,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:55,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:55,985 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:55,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:55,996 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:55,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:56,010 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:56,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:56,028 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:56,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:56,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777564855] [2021-03-11 14:34:56,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:56,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:56,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674363041] [2021-03-11 14:34:56,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:56,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:56,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:56,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:56,047 INFO L87 Difference]: Start difference. First operand 215 states and 636 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:56,103 INFO L93 Difference]: Finished difference Result 369 states and 941 transitions. [2021-03-11 14:34:56,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:56,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:56,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:56,104 INFO L225 Difference]: With dead ends: 369 [2021-03-11 14:34:56,104 INFO L226 Difference]: Without dead ends: 343 [2021-03-11 14:34:56,104 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:56,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-03-11 14:34:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 202. [2021-03-11 14:34:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 3.0248756218905473) internal successors, (608), 201 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 608 transitions. [2021-03-11 14:34:56,106 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 608 transitions. Word has length 19 [2021-03-11 14:34:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:56,107 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 608 transitions. [2021-03-11 14:34:56,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 608 transitions. [2021-03-11 14:34:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:56,107 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:56,107 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:56,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-03-11 14:34:56,107 INFO L428 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash -667701144, now seen corresponding path program 247 times [2021-03-11 14:34:56,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:56,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460383157] [2021-03-11 14:34:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:56,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:56,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:56,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:56,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:56,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:56,142 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:56,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:56,157 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:56,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:56,176 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:56,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:56,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460383157] [2021-03-11 14:34:56,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:56,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:56,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436776631] [2021-03-11 14:34:56,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:56,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:56,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:56,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:56,194 INFO L87 Difference]: Start difference. First operand 202 states and 608 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:56,235 INFO L93 Difference]: Finished difference Result 365 states and 929 transitions. [2021-03-11 14:34:56,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:56,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:56,236 INFO L225 Difference]: With dead ends: 365 [2021-03-11 14:34:56,236 INFO L226 Difference]: Without dead ends: 349 [2021-03-11 14:34:56,236 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:56,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-03-11 14:34:56,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 214. [2021-03-11 14:34:56,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.976525821596244) internal successors, (634), 213 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 634 transitions. [2021-03-11 14:34:56,239 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 634 transitions. Word has length 19 [2021-03-11 14:34:56,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:56,239 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 634 transitions. [2021-03-11 14:34:56,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 634 transitions. [2021-03-11 14:34:56,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:56,239 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:56,239 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:56,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-03-11 14:34:56,239 INFO L428 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:56,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:56,240 INFO L82 PathProgramCache]: Analyzing trace with hash -293049958, now seen corresponding path program 248 times [2021-03-11 14:34:56,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:56,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464419599] [2021-03-11 14:34:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:56,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:56,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:56,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:56,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:56,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:56,280 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:56,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:56,295 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:56,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:56,313 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:56,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:56,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464419599] [2021-03-11 14:34:56,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:56,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:56,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088087044] [2021-03-11 14:34:56,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:56,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:56,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:56,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:56,332 INFO L87 Difference]: Start difference. First operand 214 states and 634 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:56,388 INFO L93 Difference]: Finished difference Result 363 states and 919 transitions. [2021-03-11 14:34:56,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:56,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:56,389 INFO L225 Difference]: With dead ends: 363 [2021-03-11 14:34:56,389 INFO L226 Difference]: Without dead ends: 341 [2021-03-11 14:34:56,389 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-03-11 14:34:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 206. [2021-03-11 14:34:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 3.004878048780488) internal successors, (616), 205 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 616 transitions. [2021-03-11 14:34:56,392 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 616 transitions. Word has length 19 [2021-03-11 14:34:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:56,392 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 616 transitions. [2021-03-11 14:34:56,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 616 transitions. [2021-03-11 14:34:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:56,392 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:56,392 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:56,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-03-11 14:34:56,392 INFO L428 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:56,393 INFO L82 PathProgramCache]: Analyzing trace with hash -463100062, now seen corresponding path program 249 times [2021-03-11 14:34:56,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:56,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111627031] [2021-03-11 14:34:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:56,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:56,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:56,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:56,409 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:56,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:56,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:56,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:56,448 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:56,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:56,467 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:56,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:56,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111627031] [2021-03-11 14:34:56,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:56,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:56,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472393938] [2021-03-11 14:34:56,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:56,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:56,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:56,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:56,486 INFO L87 Difference]: Start difference. First operand 206 states and 616 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:56,526 INFO L93 Difference]: Finished difference Result 356 states and 902 transitions. [2021-03-11 14:34:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:56,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:56,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:56,527 INFO L225 Difference]: With dead ends: 356 [2021-03-11 14:34:56,527 INFO L226 Difference]: Without dead ends: 340 [2021-03-11 14:34:56,527 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-03-11 14:34:56,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 209. [2021-03-11 14:34:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.980769230769231) internal successors, (620), 208 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 620 transitions. [2021-03-11 14:34:56,530 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 620 transitions. Word has length 19 [2021-03-11 14:34:56,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:56,530 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 620 transitions. [2021-03-11 14:34:56,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 620 transitions. [2021-03-11 14:34:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:56,531 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:56,531 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:56,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-03-11 14:34:56,531 INFO L428 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:56,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:56,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1680140688, now seen corresponding path program 250 times [2021-03-11 14:34:56,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:56,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972616456] [2021-03-11 14:34:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:56,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:56,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:56,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:56,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:56,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:56,565 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:56,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:56,587 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:56,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:56,605 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:56,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:56,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972616456] [2021-03-11 14:34:56,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:56,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:56,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426861524] [2021-03-11 14:34:56,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:56,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:56,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:56,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:56,623 INFO L87 Difference]: Start difference. First operand 209 states and 620 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:56,682 INFO L93 Difference]: Finished difference Result 350 states and 887 transitions. [2021-03-11 14:34:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:56,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:56,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:56,683 INFO L225 Difference]: With dead ends: 350 [2021-03-11 14:34:56,683 INFO L226 Difference]: Without dead ends: 337 [2021-03-11 14:34:56,683 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-03-11 14:34:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 206. [2021-03-11 14:34:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.9902439024390244) internal successors, (613), 205 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 613 transitions. [2021-03-11 14:34:56,686 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 613 transitions. Word has length 19 [2021-03-11 14:34:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:56,686 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 613 transitions. [2021-03-11 14:34:56,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 613 transitions. [2021-03-11 14:34:56,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:56,686 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:56,686 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:56,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-03-11 14:34:56,687 INFO L428 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:56,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1861116096, now seen corresponding path program 251 times [2021-03-11 14:34:56,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:56,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033055133] [2021-03-11 14:34:56,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:56,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:56,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:56,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:56,703 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:56,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:56,722 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:56,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:56,746 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:56,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:56,764 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:56,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:56,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033055133] [2021-03-11 14:34:56,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:56,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:56,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349454788] [2021-03-11 14:34:56,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:56,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:56,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:56,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:56,783 INFO L87 Difference]: Start difference. First operand 206 states and 613 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:56,837 INFO L93 Difference]: Finished difference Result 351 states and 891 transitions. [2021-03-11 14:34:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:56,838 INFO L225 Difference]: With dead ends: 351 [2021-03-11 14:34:56,838 INFO L226 Difference]: Without dead ends: 337 [2021-03-11 14:34:56,838 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-03-11 14:34:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 208. [2021-03-11 14:34:56,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.975845410628019) internal successors, (616), 207 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 616 transitions. [2021-03-11 14:34:56,841 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 616 transitions. Word has length 19 [2021-03-11 14:34:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:56,841 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 616 transitions. [2021-03-11 14:34:56,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:56,842 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 616 transitions. [2021-03-11 14:34:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:56,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:56,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:56,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-03-11 14:34:56,842 INFO L428 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:56,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:56,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1559515874, now seen corresponding path program 252 times [2021-03-11 14:34:56,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:56,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249804971] [2021-03-11 14:34:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:56,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:56,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:56,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:56,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:56,865 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:56,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:56,884 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:56,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:56,908 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:56,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:56,927 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:56,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:56,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249804971] [2021-03-11 14:34:56,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:56,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:56,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223074888] [2021-03-11 14:34:56,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:56,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:56,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:56,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:56,946 INFO L87 Difference]: Start difference. First operand 208 states and 616 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:57,004 INFO L93 Difference]: Finished difference Result 347 states and 880 transitions. [2021-03-11 14:34:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:57,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:57,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:57,005 INFO L225 Difference]: With dead ends: 347 [2021-03-11 14:34:57,005 INFO L226 Difference]: Without dead ends: 331 [2021-03-11 14:34:57,005 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:57,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-03-11 14:34:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 202. [2021-03-11 14:34:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 3.0049751243781095) internal successors, (604), 201 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 604 transitions. [2021-03-11 14:34:57,009 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 604 transitions. Word has length 19 [2021-03-11 14:34:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:57,009 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 604 transitions. [2021-03-11 14:34:57,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 604 transitions. [2021-03-11 14:34:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:57,010 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:57,010 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:57,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-03-11 14:34:57,010 INFO L428 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:57,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:57,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1800243944, now seen corresponding path program 253 times [2021-03-11 14:34:57,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:57,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948092344] [2021-03-11 14:34:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:57,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:57,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:57,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:57,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:57,039 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:57,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:57,063 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:57,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:57,082 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:57,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:57,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948092344] [2021-03-11 14:34:57,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:57,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:57,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236704928] [2021-03-11 14:34:57,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:57,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:57,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:57,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:57,101 INFO L87 Difference]: Start difference. First operand 202 states and 604 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:57,147 INFO L93 Difference]: Finished difference Result 352 states and 894 transitions. [2021-03-11 14:34:57,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:57,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:57,148 INFO L225 Difference]: With dead ends: 352 [2021-03-11 14:34:57,148 INFO L226 Difference]: Without dead ends: 336 [2021-03-11 14:34:57,148 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-03-11 14:34:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 208. [2021-03-11 14:34:57,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9855072463768115) internal successors, (618), 207 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 618 transitions. [2021-03-11 14:34:57,151 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 618 transitions. Word has length 19 [2021-03-11 14:34:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:57,151 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 618 transitions. [2021-03-11 14:34:57,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 618 transitions. [2021-03-11 14:34:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:57,152 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:57,152 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:57,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-03-11 14:34:57,152 INFO L428 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:57,152 INFO L82 PathProgramCache]: Analyzing trace with hash -351482602, now seen corresponding path program 254 times [2021-03-11 14:34:57,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:57,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903717738] [2021-03-11 14:34:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:57,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:57,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:57,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:57,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:57,180 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:34:57,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:34:57,205 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:57,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:57,223 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:57,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:57,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903717738] [2021-03-11 14:34:57,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:57,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:57,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156017166] [2021-03-11 14:34:57,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:57,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:57,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:57,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:57,242 INFO L87 Difference]: Start difference. First operand 208 states and 618 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:57,297 INFO L93 Difference]: Finished difference Result 346 states and 879 transitions. [2021-03-11 14:34:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:57,298 INFO L225 Difference]: With dead ends: 346 [2021-03-11 14:34:57,298 INFO L226 Difference]: Without dead ends: 333 [2021-03-11 14:34:57,298 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:57,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-03-11 14:34:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 205. [2021-03-11 14:34:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 2.9950980392156863) internal successors, (611), 204 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 611 transitions. [2021-03-11 14:34:57,301 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 611 transitions. Word has length 19 [2021-03-11 14:34:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:57,301 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 611 transitions. [2021-03-11 14:34:57,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 611 transitions. [2021-03-11 14:34:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:57,302 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:57,302 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:57,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-03-11 14:34:57,302 INFO L428 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:57,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1293897678, now seen corresponding path program 255 times [2021-03-11 14:34:57,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:57,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169241179] [2021-03-11 14:34:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:57,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:57,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:57,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:57,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:57,335 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:57,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:57,352 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:57,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:57,373 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:57,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:57,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169241179] [2021-03-11 14:34:57,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:57,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:57,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9439493] [2021-03-11 14:34:57,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:57,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:57,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:57,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:57,391 INFO L87 Difference]: Start difference. First operand 205 states and 611 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:57,442 INFO L93 Difference]: Finished difference Result 358 states and 908 transitions. [2021-03-11 14:34:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:57,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:57,443 INFO L225 Difference]: With dead ends: 358 [2021-03-11 14:34:57,443 INFO L226 Difference]: Without dead ends: 342 [2021-03-11 14:34:57,443 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:57,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-03-11 14:34:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 211. [2021-03-11 14:34:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 2.961904761904762) internal successors, (622), 210 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 622 transitions. [2021-03-11 14:34:57,446 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 622 transitions. Word has length 19 [2021-03-11 14:34:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:57,446 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 622 transitions. [2021-03-11 14:34:57,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 622 transitions. [2021-03-11 14:34:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:57,446 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:57,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:57,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-03-11 14:34:57,446 INFO L428 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:57,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:57,446 INFO L82 PathProgramCache]: Analyzing trace with hash 317692928, now seen corresponding path program 256 times [2021-03-11 14:34:57,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:57,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265509360] [2021-03-11 14:34:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:57,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:57,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:57,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:57,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:57,477 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:57,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:57,494 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:57,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:57,516 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:57,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:57,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265509360] [2021-03-11 14:34:57,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:57,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:57,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297744522] [2021-03-11 14:34:57,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:57,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:57,538 INFO L87 Difference]: Start difference. First operand 211 states and 622 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:57,603 INFO L93 Difference]: Finished difference Result 355 states and 897 transitions. [2021-03-11 14:34:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:57,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:57,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:57,604 INFO L225 Difference]: With dead ends: 355 [2021-03-11 14:34:57,604 INFO L226 Difference]: Without dead ends: 336 [2021-03-11 14:34:57,604 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:57,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-03-11 14:34:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 205. [2021-03-11 14:34:57,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 2.980392156862745) internal successors, (608), 204 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 608 transitions. [2021-03-11 14:34:57,607 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 608 transitions. Word has length 19 [2021-03-11 14:34:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:57,607 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 608 transitions. [2021-03-11 14:34:57,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 608 transitions. [2021-03-11 14:34:57,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:57,607 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:57,607 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:57,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-03-11 14:34:57,607 INFO L428 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:57,607 INFO L82 PathProgramCache]: Analyzing trace with hash -235841100, now seen corresponding path program 257 times [2021-03-11 14:34:57,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:57,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077680940] [2021-03-11 14:34:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:57,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:57,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:57,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:57,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:57,633 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:57,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:57,646 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:57,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:57,665 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:57,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:57,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077680940] [2021-03-11 14:34:57,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:57,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:57,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636873209] [2021-03-11 14:34:57,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:57,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:57,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:57,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:57,683 INFO L87 Difference]: Start difference. First operand 205 states and 608 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:57,741 INFO L93 Difference]: Finished difference Result 342 states and 869 transitions. [2021-03-11 14:34:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:57,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:57,742 INFO L225 Difference]: With dead ends: 342 [2021-03-11 14:34:57,742 INFO L226 Difference]: Without dead ends: 332 [2021-03-11 14:34:57,742 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:57,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-03-11 14:34:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 207. [2021-03-11 14:34:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.966019417475728) internal successors, (611), 206 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 611 transitions. [2021-03-11 14:34:57,745 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 611 transitions. Word has length 19 [2021-03-11 14:34:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:57,745 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 611 transitions. [2021-03-11 14:34:57,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 611 transitions. [2021-03-11 14:34:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:57,745 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:57,745 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:57,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-03-11 14:34:57,745 INFO L428 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:57,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:57,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1964888434, now seen corresponding path program 258 times [2021-03-11 14:34:57,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:57,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515560737] [2021-03-11 14:34:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:57,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:57,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:57,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:57,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:57,770 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:57,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:57,784 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:57,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:57,803 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:57,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:57,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515560737] [2021-03-11 14:34:57,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:57,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:57,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586684807] [2021-03-11 14:34:57,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:57,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:57,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:57,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:57,822 INFO L87 Difference]: Start difference. First operand 207 states and 611 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:57,878 INFO L93 Difference]: Finished difference Result 345 states and 874 transitions. [2021-03-11 14:34:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:57,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:57,879 INFO L225 Difference]: With dead ends: 345 [2021-03-11 14:34:57,879 INFO L226 Difference]: Without dead ends: 327 [2021-03-11 14:34:57,879 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:57,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-03-11 14:34:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 202. [2021-03-11 14:34:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.990049751243781) internal successors, (601), 201 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 601 transitions. [2021-03-11 14:34:57,882 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 601 transitions. Word has length 19 [2021-03-11 14:34:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:57,882 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 601 transitions. [2021-03-11 14:34:57,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 601 transitions. [2021-03-11 14:34:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:57,882 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:57,882 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:57,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-03-11 14:34:57,882 INFO L428 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:57,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1020844596, now seen corresponding path program 259 times [2021-03-11 14:34:57,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:57,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745478866] [2021-03-11 14:34:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:57,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:57,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:57,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:57,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:57,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:57,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:57,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:57,932 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:57,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:57,952 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:57,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:57,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745478866] [2021-03-11 14:34:57,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:57,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:57,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326923651] [2021-03-11 14:34:57,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:57,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:57,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:57,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:57,970 INFO L87 Difference]: Start difference. First operand 202 states and 601 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:58,026 INFO L93 Difference]: Finished difference Result 342 states and 873 transitions. [2021-03-11 14:34:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:58,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:58,026 INFO L225 Difference]: With dead ends: 342 [2021-03-11 14:34:58,026 INFO L226 Difference]: Without dead ends: 328 [2021-03-11 14:34:58,027 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-03-11 14:34:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 206. [2021-03-11 14:34:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.9804878048780488) internal successors, (611), 205 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 611 transitions. [2021-03-11 14:34:58,029 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 611 transitions. Word has length 19 [2021-03-11 14:34:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:58,029 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 611 transitions. [2021-03-11 14:34:58,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 611 transitions. [2021-03-11 14:34:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:58,030 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:58,030 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:58,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-03-11 14:34:58,030 INFO L428 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:58,030 INFO L82 PathProgramCache]: Analyzing trace with hash 146509270, now seen corresponding path program 260 times [2021-03-11 14:34:58,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:58,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807675893] [2021-03-11 14:34:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:58,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:58,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:58,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:58,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:58,055 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:34:58,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:58,080 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:58,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:58,099 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:58,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:58,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807675893] [2021-03-11 14:34:58,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:58,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:58,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044328743] [2021-03-11 14:34:58,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:58,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:58,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:58,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:58,117 INFO L87 Difference]: Start difference. First operand 206 states and 611 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:58,174 INFO L93 Difference]: Finished difference Result 338 states and 862 transitions. [2021-03-11 14:34:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:58,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:58,175 INFO L225 Difference]: With dead ends: 338 [2021-03-11 14:34:58,175 INFO L226 Difference]: Without dead ends: 326 [2021-03-11 14:34:58,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:58,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-03-11 14:34:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 204. [2021-03-11 14:34:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.9852216748768474) internal successors, (606), 203 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 606 transitions. [2021-03-11 14:34:58,178 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 606 transitions. Word has length 19 [2021-03-11 14:34:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:58,178 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 606 transitions. [2021-03-11 14:34:58,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,178 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 606 transitions. [2021-03-11 14:34:58,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:58,178 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:58,178 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:58,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-03-11 14:34:58,178 INFO L428 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:58,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1040015206, now seen corresponding path program 261 times [2021-03-11 14:34:58,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:58,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864045072] [2021-03-11 14:34:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:58,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:58,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:58,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:58,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:58,208 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:58,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:58,222 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:58,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:58,241 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:58,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:58,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864045072] [2021-03-11 14:34:58,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:58,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:58,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029856218] [2021-03-11 14:34:58,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:58,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:58,260 INFO L87 Difference]: Start difference. First operand 204 states and 606 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:58,314 INFO L93 Difference]: Finished difference Result 348 states and 888 transitions. [2021-03-11 14:34:58,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:58,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:58,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:58,315 INFO L225 Difference]: With dead ends: 348 [2021-03-11 14:34:58,315 INFO L226 Difference]: Without dead ends: 334 [2021-03-11 14:34:58,315 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-03-11 14:34:58,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 209. [2021-03-11 14:34:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.9615384615384617) internal successors, (616), 208 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 616 transitions. [2021-03-11 14:34:58,318 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 616 transitions. Word has length 19 [2021-03-11 14:34:58,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:58,318 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 616 transitions. [2021-03-11 14:34:58,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,318 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 616 transitions. [2021-03-11 14:34:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:58,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:58,318 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:58,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-03-11 14:34:58,318 INFO L428 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:58,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:58,319 INFO L82 PathProgramCache]: Analyzing trace with hash -71131166, now seen corresponding path program 262 times [2021-03-11 14:34:58,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:58,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90297916] [2021-03-11 14:34:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:58,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:58,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:58,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:58,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:58,345 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:58,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:58,359 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:58,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:58,378 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:58,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:58,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90297916] [2021-03-11 14:34:58,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:58,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:58,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745120445] [2021-03-11 14:34:58,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:58,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:58,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:58,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:58,396 INFO L87 Difference]: Start difference. First operand 209 states and 616 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:58,453 INFO L93 Difference]: Finished difference Result 347 states and 881 transitions. [2021-03-11 14:34:58,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:58,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:58,454 INFO L225 Difference]: With dead ends: 347 [2021-03-11 14:34:58,454 INFO L226 Difference]: Without dead ends: 329 [2021-03-11 14:34:58,454 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:58,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-03-11 14:34:58,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 204. [2021-03-11 14:34:58,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.9753694581280787) internal successors, (604), 203 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 604 transitions. [2021-03-11 14:34:58,457 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 604 transitions. Word has length 19 [2021-03-11 14:34:58,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:58,457 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 604 transitions. [2021-03-11 14:34:58,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,457 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 604 transitions. [2021-03-11 14:34:58,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:58,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:58,458 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:58,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-03-11 14:34:58,458 INFO L428 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:58,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:58,458 INFO L82 PathProgramCache]: Analyzing trace with hash 319756962, now seen corresponding path program 263 times [2021-03-11 14:34:58,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:58,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897284038] [2021-03-11 14:34:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:58,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:58,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:58,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:58,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:58,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:58,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:58,497 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:58,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:58,515 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:58,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:58,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897284038] [2021-03-11 14:34:58,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:58,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:58,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643592345] [2021-03-11 14:34:58,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:58,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:58,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:58,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:58,536 INFO L87 Difference]: Start difference. First operand 204 states and 604 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:58,589 INFO L93 Difference]: Finished difference Result 337 states and 858 transitions. [2021-03-11 14:34:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:58,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:58,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:58,589 INFO L225 Difference]: With dead ends: 337 [2021-03-11 14:34:58,589 INFO L226 Difference]: Without dead ends: 327 [2021-03-11 14:34:58,589 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-03-11 14:34:58,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 206. [2021-03-11 14:34:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.9609756097560975) internal successors, (607), 205 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 607 transitions. [2021-03-11 14:34:58,593 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 607 transitions. Word has length 19 [2021-03-11 14:34:58,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:58,593 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 607 transitions. [2021-03-11 14:34:58,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 607 transitions. [2021-03-11 14:34:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:58,594 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:58,594 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:58,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-03-11 14:34:58,594 INFO L428 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:58,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1409290372, now seen corresponding path program 264 times [2021-03-11 14:34:58,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:58,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644984730] [2021-03-11 14:34:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:58,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:58,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:58,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:58,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:58,625 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:58,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:58,641 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:58,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:58,662 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:58,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:58,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644984730] [2021-03-11 14:34:58,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:58,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:58,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117924295] [2021-03-11 14:34:58,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:58,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:58,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:58,685 INFO L87 Difference]: Start difference. First operand 206 states and 607 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:58,759 INFO L93 Difference]: Finished difference Result 340 states and 863 transitions. [2021-03-11 14:34:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:58,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:58,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:58,760 INFO L225 Difference]: With dead ends: 340 [2021-03-11 14:34:58,760 INFO L226 Difference]: Without dead ends: 318 [2021-03-11 14:34:58,760 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:58,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-03-11 14:34:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 197. [2021-03-11 14:34:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 3.0153061224489797) internal successors, (591), 196 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 591 transitions. [2021-03-11 14:34:58,763 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 591 transitions. Word has length 19 [2021-03-11 14:34:58,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:58,764 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 591 transitions. [2021-03-11 14:34:58,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 591 transitions. [2021-03-11 14:34:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:58,764 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:58,764 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:58,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-03-11 14:34:58,764 INFO L428 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:58,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:58,764 INFO L82 PathProgramCache]: Analyzing trace with hash -666960488, now seen corresponding path program 265 times [2021-03-11 14:34:58,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:58,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525678496] [2021-03-11 14:34:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:58,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:58,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:58,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:58,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:58,791 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:58,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:58,804 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:58,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:58,822 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:58,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:58,847 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:58,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:58,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525678496] [2021-03-11 14:34:58,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:58,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:58,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453023841] [2021-03-11 14:34:58,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:58,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:58,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:58,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:58,872 INFO L87 Difference]: Start difference. First operand 197 states and 591 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:58,914 INFO L93 Difference]: Finished difference Result 365 states and 927 transitions. [2021-03-11 14:34:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:58,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:58,915 INFO L225 Difference]: With dead ends: 365 [2021-03-11 14:34:58,915 INFO L226 Difference]: Without dead ends: 349 [2021-03-11 14:34:58,915 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:58,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-03-11 14:34:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 205. [2021-03-11 14:34:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 2.965686274509804) internal successors, (605), 204 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 605 transitions. [2021-03-11 14:34:58,918 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 605 transitions. Word has length 19 [2021-03-11 14:34:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:58,918 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 605 transitions. [2021-03-11 14:34:58,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:58,918 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 605 transitions. [2021-03-11 14:34:58,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:58,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:58,918 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:58,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-03-11 14:34:58,918 INFO L428 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:58,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:58,919 INFO L82 PathProgramCache]: Analyzing trace with hash -292309302, now seen corresponding path program 266 times [2021-03-11 14:34:58,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:58,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254749561] [2021-03-11 14:34:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:58,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:58,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:58,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:58,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:58,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:58,940 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:58,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:58,950 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:58,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:58,965 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:58,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:58,983 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:58,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:59,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254749561] [2021-03-11 14:34:59,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:59,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:59,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978918853] [2021-03-11 14:34:59,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:59,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:59,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:59,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:59,002 INFO L87 Difference]: Start difference. First operand 205 states and 605 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:59,056 INFO L93 Difference]: Finished difference Result 363 states and 917 transitions. [2021-03-11 14:34:59,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:59,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:59,056 INFO L225 Difference]: With dead ends: 363 [2021-03-11 14:34:59,057 INFO L226 Difference]: Without dead ends: 341 [2021-03-11 14:34:59,057 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:59,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-03-11 14:34:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 197. [2021-03-11 14:34:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.979591836734694) internal successors, (584), 196 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 584 transitions. [2021-03-11 14:34:59,059 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 584 transitions. Word has length 19 [2021-03-11 14:34:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:59,059 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 584 transitions. [2021-03-11 14:34:59,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 584 transitions. [2021-03-11 14:34:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:59,060 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:59,060 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:59,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-03-11 14:34:59,060 INFO L428 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:59,060 INFO L82 PathProgramCache]: Analyzing trace with hash 514429266, now seen corresponding path program 267 times [2021-03-11 14:34:59,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:59,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804121817] [2021-03-11 14:34:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:59,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:59,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:59,070 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:59,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:59,081 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:59,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:59,091 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:59,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:59,105 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:59,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:59,124 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:59,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:59,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804121817] [2021-03-11 14:34:59,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:59,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:59,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86538864] [2021-03-11 14:34:59,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:59,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:59,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:59,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:59,143 INFO L87 Difference]: Start difference. First operand 197 states and 584 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:59,182 INFO L93 Difference]: Finished difference Result 362 states and 914 transitions. [2021-03-11 14:34:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:59,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:59,183 INFO L225 Difference]: With dead ends: 362 [2021-03-11 14:34:59,183 INFO L226 Difference]: Without dead ends: 346 [2021-03-11 14:34:59,183 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-03-11 14:34:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 203. [2021-03-11 14:34:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.9455445544554455) internal successors, (595), 202 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 595 transitions. [2021-03-11 14:34:59,187 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 595 transitions. Word has length 19 [2021-03-11 14:34:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:59,187 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 595 transitions. [2021-03-11 14:34:59,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 595 transitions. [2021-03-11 14:34:59,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:59,188 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:59,188 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:59,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-03-11 14:34:59,188 INFO L428 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:59,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:59,188 INFO L82 PathProgramCache]: Analyzing trace with hash -461775484, now seen corresponding path program 268 times [2021-03-11 14:34:59,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:59,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162382185] [2021-03-11 14:34:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:59,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:59,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:59,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:59,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:59,213 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:59,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:59,224 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:59,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:59,238 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:59,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:59,257 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:59,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:59,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162382185] [2021-03-11 14:34:59,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:59,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:59,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054156487] [2021-03-11 14:34:59,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:59,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:59,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:59,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:59,275 INFO L87 Difference]: Start difference. First operand 203 states and 595 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:59,334 INFO L93 Difference]: Finished difference Result 359 states and 903 transitions. [2021-03-11 14:34:59,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:59,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:59,335 INFO L225 Difference]: With dead ends: 359 [2021-03-11 14:34:59,335 INFO L226 Difference]: Without dead ends: 340 [2021-03-11 14:34:59,335 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:59,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-03-11 14:34:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 197. [2021-03-11 14:34:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.9489795918367347) internal successors, (578), 196 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 578 transitions. [2021-03-11 14:34:59,338 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 578 transitions. Word has length 19 [2021-03-11 14:34:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:59,338 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 578 transitions. [2021-03-11 14:34:59,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 578 transitions. [2021-03-11 14:34:59,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:59,339 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:59,339 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:59,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-03-11 14:34:59,339 INFO L428 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:59,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:59,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1704196806, now seen corresponding path program 269 times [2021-03-11 14:34:59,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:59,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175182588] [2021-03-11 14:34:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:59,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:59,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:59,348 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:59,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:59,360 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:59,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:59,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:59,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:59,384 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:59,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:59,408 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:59,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:59,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175182588] [2021-03-11 14:34:59,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:59,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:59,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947476849] [2021-03-11 14:34:59,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:59,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:59,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:59,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:59,427 INFO L87 Difference]: Start difference. First operand 197 states and 578 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:59,494 INFO L93 Difference]: Finished difference Result 357 states and 900 transitions. [2021-03-11 14:34:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:59,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:59,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:59,495 INFO L225 Difference]: With dead ends: 357 [2021-03-11 14:34:59,495 INFO L226 Difference]: Without dead ends: 343 [2021-03-11 14:34:59,495 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:59,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-03-11 14:34:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 202. [2021-03-11 14:34:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.925373134328358) internal successors, (588), 201 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 588 transitions. [2021-03-11 14:34:59,498 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 588 transitions. Word has length 19 [2021-03-11 14:34:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:59,498 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 588 transitions. [2021-03-11 14:34:59,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 588 transitions. [2021-03-11 14:34:59,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:59,499 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:59,499 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:59,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-03-11 14:34:59,499 INFO L428 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:59,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:59,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1732490606, now seen corresponding path program 270 times [2021-03-11 14:34:59,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:59,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990492428] [2021-03-11 14:34:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:59,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:59,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:59,511 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:59,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:59,522 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:59,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:59,532 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:59,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:59,546 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:59,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:59,565 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:59,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:59,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990492428] [2021-03-11 14:34:59,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:59,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:59,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916825862] [2021-03-11 14:34:59,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:59,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:59,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:59,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:59,584 INFO L87 Difference]: Start difference. First operand 202 states and 588 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:59,642 INFO L93 Difference]: Finished difference Result 356 states and 893 transitions. [2021-03-11 14:34:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:59,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:59,643 INFO L225 Difference]: With dead ends: 356 [2021-03-11 14:34:59,643 INFO L226 Difference]: Without dead ends: 330 [2021-03-11 14:34:59,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:59,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-03-11 14:34:59,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 189. [2021-03-11 14:34:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.978723404255319) internal successors, (560), 188 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 560 transitions. [2021-03-11 14:34:59,646 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 560 transitions. Word has length 19 [2021-03-11 14:34:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:59,646 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 560 transitions. [2021-03-11 14:34:59,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 560 transitions. [2021-03-11 14:34:59,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:59,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:59,647 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:59,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-03-11 14:34:59,647 INFO L428 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 710767946, now seen corresponding path program 271 times [2021-03-11 14:34:59,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:59,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856716640] [2021-03-11 14:34:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:59,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:59,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:59,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:59,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:59,669 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:59,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:59,686 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:59,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:59,706 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:34:59,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:34:59,726 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:59,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:59,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856716640] [2021-03-11 14:34:59,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:59,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:59,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501104869] [2021-03-11 14:34:59,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:59,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:59,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:59,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:59,747 INFO L87 Difference]: Start difference. First operand 189 states and 560 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:59,789 INFO L93 Difference]: Finished difference Result 344 states and 860 transitions. [2021-03-11 14:34:59,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:59,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:59,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:59,790 INFO L225 Difference]: With dead ends: 344 [2021-03-11 14:34:59,790 INFO L226 Difference]: Without dead ends: 328 [2021-03-11 14:34:59,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:59,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-03-11 14:34:59,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 201. [2021-03-11 14:34:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 2.93) internal successors, (586), 200 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 586 transitions. [2021-03-11 14:34:59,793 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 586 transitions. Word has length 19 [2021-03-11 14:34:59,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:59,793 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 586 transitions. [2021-03-11 14:34:59,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,793 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 586 transitions. [2021-03-11 14:34:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:59,794 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:59,794 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:59,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-03-11 14:34:59,794 INFO L428 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:59,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:59,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1085419132, now seen corresponding path program 272 times [2021-03-11 14:34:59,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:59,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730256822] [2021-03-11 14:34:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:59,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:59,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:59,804 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:59,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:59,816 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:59,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:59,832 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:59,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:59,846 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:59,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:34:59,865 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:34:59,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:34:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:59,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730256822] [2021-03-11 14:34:59,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:59,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:34:59,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866594611] [2021-03-11 14:34:59,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:34:59,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:59,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:34:59,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:59,884 INFO L87 Difference]: Start difference. First operand 201 states and 586 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:59,940 INFO L93 Difference]: Finished difference Result 342 states and 850 transitions. [2021-03-11 14:34:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:34:59,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:34:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:59,941 INFO L225 Difference]: With dead ends: 342 [2021-03-11 14:34:59,941 INFO L226 Difference]: Without dead ends: 320 [2021-03-11 14:34:59,941 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:34:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-03-11 14:34:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 193. [2021-03-11 14:34:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.9583333333333335) internal successors, (568), 192 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 568 transitions. [2021-03-11 14:34:59,943 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 568 transitions. Word has length 19 [2021-03-11 14:34:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:59,943 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 568 transitions. [2021-03-11 14:34:59,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:59,944 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 568 transitions. [2021-03-11 14:34:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:34:59,944 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:59,944 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:59,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-03-11 14:34:59,944 INFO L428 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:59,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:59,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1240965252, now seen corresponding path program 273 times [2021-03-11 14:34:59,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:59,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161009366] [2021-03-11 14:34:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:59,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:59,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:59,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:59,956 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:59,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:59,968 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:59,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:59,984 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:34:59,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:00,005 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:00,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:00,024 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:00,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:00,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161009366] [2021-03-11 14:35:00,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:00,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:00,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100476371] [2021-03-11 14:35:00,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:00,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:00,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:00,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:00,043 INFO L87 Difference]: Start difference. First operand 193 states and 568 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:00,090 INFO L93 Difference]: Finished difference Result 327 states and 818 transitions. [2021-03-11 14:35:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:00,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:00,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:00,091 INFO L225 Difference]: With dead ends: 327 [2021-03-11 14:35:00,091 INFO L226 Difference]: Without dead ends: 311 [2021-03-11 14:35:00,092 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-03-11 14:35:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 196. [2021-03-11 14:35:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.933333333333333) internal successors, (572), 195 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 572 transitions. [2021-03-11 14:35:00,094 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 572 transitions. Word has length 19 [2021-03-11 14:35:00,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:00,094 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 572 transitions. [2021-03-11 14:35:00,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 572 transitions. [2021-03-11 14:35:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:00,095 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:00,095 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:00,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-03-11 14:35:00,095 INFO L428 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:00,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:00,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1500023478, now seen corresponding path program 274 times [2021-03-11 14:35:00,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:00,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151197450] [2021-03-11 14:35:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:00,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:00,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:00,105 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:00,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:00,117 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:00,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:00,133 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:00,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:00,154 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:00,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:00,173 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:00,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:00,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151197450] [2021-03-11 14:35:00,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:00,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:00,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697517299] [2021-03-11 14:35:00,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:00,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:00,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:00,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:00,193 INFO L87 Difference]: Start difference. First operand 196 states and 572 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:00,235 INFO L93 Difference]: Finished difference Result 312 states and 794 transitions. [2021-03-11 14:35:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:00,236 INFO L225 Difference]: With dead ends: 312 [2021-03-11 14:35:00,236 INFO L226 Difference]: Without dead ends: 299 [2021-03-11 14:35:00,236 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-03-11 14:35:00,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 193. [2021-03-11 14:35:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.9427083333333335) internal successors, (565), 192 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 565 transitions. [2021-03-11 14:35:00,239 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 565 transitions. Word has length 19 [2021-03-11 14:35:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:00,239 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 565 transitions. [2021-03-11 14:35:00,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 565 transitions. [2021-03-11 14:35:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:00,239 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:00,239 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:00,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-03-11 14:35:00,239 INFO L428 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:00,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:00,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1131696324, now seen corresponding path program 275 times [2021-03-11 14:35:00,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:00,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273133013] [2021-03-11 14:35:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:00,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:00,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:00,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:00,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:00,261 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:00,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:00,277 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:00,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:00,300 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:00,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:00,319 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:00,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:00,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273133013] [2021-03-11 14:35:00,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:00,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:00,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632390072] [2021-03-11 14:35:00,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:00,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:00,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:00,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:00,338 INFO L87 Difference]: Start difference. First operand 193 states and 565 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:00,396 INFO L93 Difference]: Finished difference Result 324 states and 810 transitions. [2021-03-11 14:35:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:00,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:00,397 INFO L225 Difference]: With dead ends: 324 [2021-03-11 14:35:00,397 INFO L226 Difference]: Without dead ends: 310 [2021-03-11 14:35:00,397 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-03-11 14:35:00,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 195. [2021-03-11 14:35:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9278350515463916) internal successors, (568), 194 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 568 transitions. [2021-03-11 14:35:00,400 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 568 transitions. Word has length 19 [2021-03-11 14:35:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:00,400 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 568 transitions. [2021-03-11 14:35:00,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 568 transitions. [2021-03-11 14:35:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:00,400 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:00,400 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:00,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-03-11 14:35:00,400 INFO L428 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:00,401 INFO L82 PathProgramCache]: Analyzing trace with hash -11566494, now seen corresponding path program 276 times [2021-03-11 14:35:00,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:00,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812459342] [2021-03-11 14:35:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:00,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:00,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:00,411 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:00,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:00,422 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:00,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:00,438 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:00,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:00,460 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:00,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:00,479 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:00,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:00,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812459342] [2021-03-11 14:35:00,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:00,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:00,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599310971] [2021-03-11 14:35:00,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:00,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:00,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:00,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:00,498 INFO L87 Difference]: Start difference. First operand 195 states and 568 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:00,541 INFO L93 Difference]: Finished difference Result 311 states and 790 transitions. [2021-03-11 14:35:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:00,542 INFO L225 Difference]: With dead ends: 311 [2021-03-11 14:35:00,542 INFO L226 Difference]: Without dead ends: 295 [2021-03-11 14:35:00,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-03-11 14:35:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 189. [2021-03-11 14:35:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9574468085106385) internal successors, (556), 188 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 556 transitions. [2021-03-11 14:35:00,546 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 556 transitions. Word has length 19 [2021-03-11 14:35:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:00,546 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 556 transitions. [2021-03-11 14:35:00,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 556 transitions. [2021-03-11 14:35:00,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:00,546 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:00,546 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:00,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-03-11 14:35:00,546 INFO L428 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:00,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:00,546 INFO L82 PathProgramCache]: Analyzing trace with hash -790658038, now seen corresponding path program 277 times [2021-03-11 14:35:00,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:00,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730772306] [2021-03-11 14:35:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:00,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:00,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:00,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:00,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:00,568 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:00,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:00,584 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:00,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:00,605 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:00,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:00,625 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:00,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:00,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730772306] [2021-03-11 14:35:00,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:00,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:00,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446551570] [2021-03-11 14:35:00,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:00,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:00,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:00,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:00,643 INFO L87 Difference]: Start difference. First operand 189 states and 556 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:00,690 INFO L93 Difference]: Finished difference Result 339 states and 846 transitions. [2021-03-11 14:35:00,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:00,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:00,691 INFO L225 Difference]: With dead ends: 339 [2021-03-11 14:35:00,691 INFO L226 Difference]: Without dead ends: 323 [2021-03-11 14:35:00,691 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-03-11 14:35:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 195. [2021-03-11 14:35:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9381443298969074) internal successors, (570), 194 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2021-03-11 14:35:00,693 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 19 [2021-03-11 14:35:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:00,694 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2021-03-11 14:35:00,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2021-03-11 14:35:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:00,694 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:00,694 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:00,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-03-11 14:35:00,694 INFO L428 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:00,694 INFO L82 PathProgramCache]: Analyzing trace with hash -531599812, now seen corresponding path program 278 times [2021-03-11 14:35:00,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:00,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260958534] [2021-03-11 14:35:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:00,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:00,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:00,704 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:00,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:00,715 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:00,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:00,732 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:00,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:00,753 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:00,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:00,772 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:00,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:00,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260958534] [2021-03-11 14:35:00,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:00,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:00,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856376874] [2021-03-11 14:35:00,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:00,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:00,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:00,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:00,791 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:00,835 INFO L93 Difference]: Finished difference Result 333 states and 831 transitions. [2021-03-11 14:35:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:00,836 INFO L225 Difference]: With dead ends: 333 [2021-03-11 14:35:00,836 INFO L226 Difference]: Without dead ends: 320 [2021-03-11 14:35:00,836 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-03-11 14:35:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 192. [2021-03-11 14:35:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.9476439790575917) internal successors, (563), 191 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 563 transitions. [2021-03-11 14:35:00,840 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 563 transitions. Word has length 19 [2021-03-11 14:35:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:00,840 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 563 transitions. [2021-03-11 14:35:00,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 563 transitions. [2021-03-11 14:35:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:00,840 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:00,840 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:00,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-03-11 14:35:00,840 INFO L428 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:00,841 INFO L82 PathProgramCache]: Analyzing trace with hash 303433550, now seen corresponding path program 279 times [2021-03-11 14:35:00,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:00,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255830007] [2021-03-11 14:35:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:00,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:00,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:00,851 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:00,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:00,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:00,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:00,879 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:00,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:00,893 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:00,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:00,913 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:00,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:00,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255830007] [2021-03-11 14:35:00,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:00,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:00,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94478256] [2021-03-11 14:35:00,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:00,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:00,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:00,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:00,931 INFO L87 Difference]: Start difference. First operand 192 states and 563 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:00,974 INFO L93 Difference]: Finished difference Result 339 states and 843 transitions. [2021-03-11 14:35:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:00,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:00,975 INFO L225 Difference]: With dead ends: 339 [2021-03-11 14:35:00,975 INFO L226 Difference]: Without dead ends: 323 [2021-03-11 14:35:00,975 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-03-11 14:35:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 198. [2021-03-11 14:35:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9137055837563453) internal successors, (574), 197 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 574 transitions. [2021-03-11 14:35:00,978 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 574 transitions. Word has length 19 [2021-03-11 14:35:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:00,978 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 574 transitions. [2021-03-11 14:35:00,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 574 transitions. [2021-03-11 14:35:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:00,978 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:00,979 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:00,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-03-11 14:35:00,979 INFO L428 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:00,979 INFO L82 PathProgramCache]: Analyzing trace with hash -672771200, now seen corresponding path program 280 times [2021-03-11 14:35:00,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:00,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734446874] [2021-03-11 14:35:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:00,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:00,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:00,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:00,990 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:00,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:01,001 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:01,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:01,018 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:01,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:01,032 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:01,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:01,051 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:01,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:01,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734446874] [2021-03-11 14:35:01,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:01,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:01,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871280539] [2021-03-11 14:35:01,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:01,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:01,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:01,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:01,070 INFO L87 Difference]: Start difference. First operand 198 states and 574 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:01,145 INFO L93 Difference]: Finished difference Result 336 states and 832 transitions. [2021-03-11 14:35:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:01,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:01,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:01,146 INFO L225 Difference]: With dead ends: 336 [2021-03-11 14:35:01,146 INFO L226 Difference]: Without dead ends: 317 [2021-03-11 14:35:01,146 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-03-11 14:35:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 192. [2021-03-11 14:35:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.931937172774869) internal successors, (560), 191 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 560 transitions. [2021-03-11 14:35:01,149 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 560 transitions. Word has length 19 [2021-03-11 14:35:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:01,149 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 560 transitions. [2021-03-11 14:35:01,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 560 transitions. [2021-03-11 14:35:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:01,149 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:01,149 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:01,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-03-11 14:35:01,150 INFO L428 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1980171160, now seen corresponding path program 281 times [2021-03-11 14:35:01,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:01,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719200321] [2021-03-11 14:35:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:01,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:01,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:01,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:01,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:01,171 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:01,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:01,188 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:01,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:01,211 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:01,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:01,231 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:01,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:01,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719200321] [2021-03-11 14:35:01,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:01,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:01,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207015927] [2021-03-11 14:35:01,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:01,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:01,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:01,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:01,250 INFO L87 Difference]: Start difference. First operand 192 states and 560 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:01,292 INFO L93 Difference]: Finished difference Result 323 states and 804 transitions. [2021-03-11 14:35:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:01,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:01,292 INFO L225 Difference]: With dead ends: 323 [2021-03-11 14:35:01,292 INFO L226 Difference]: Without dead ends: 313 [2021-03-11 14:35:01,292 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-03-11 14:35:01,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 194. [2021-03-11 14:35:01,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.917098445595855) internal successors, (563), 193 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 563 transitions. [2021-03-11 14:35:01,295 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 563 transitions. Word has length 19 [2021-03-11 14:35:01,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:01,295 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 563 transitions. [2021-03-11 14:35:01,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,295 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 563 transitions. [2021-03-11 14:35:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:01,296 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:01,296 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:01,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-03-11 14:35:01,296 INFO L428 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:01,296 INFO L82 PathProgramCache]: Analyzing trace with hash -490766164, now seen corresponding path program 282 times [2021-03-11 14:35:01,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:01,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546137394] [2021-03-11 14:35:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:01,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:01,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:01,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:01,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:01,319 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:01,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:01,336 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:01,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:01,378 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:01,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:01,397 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:01,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:01,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546137394] [2021-03-11 14:35:01,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:01,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:01,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764479589] [2021-03-11 14:35:01,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:01,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:01,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:01,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:01,416 INFO L87 Difference]: Start difference. First operand 194 states and 563 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:01,475 INFO L93 Difference]: Finished difference Result 321 states and 799 transitions. [2021-03-11 14:35:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:01,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:01,475 INFO L225 Difference]: With dead ends: 321 [2021-03-11 14:35:01,475 INFO L226 Difference]: Without dead ends: 303 [2021-03-11 14:35:01,476 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 138.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:01,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-03-11 14:35:01,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 189. [2021-03-11 14:35:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9414893617021276) internal successors, (553), 188 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 553 transitions. [2021-03-11 14:35:01,478 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 553 transitions. Word has length 19 [2021-03-11 14:35:01,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:01,478 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 553 transitions. [2021-03-11 14:35:01,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 553 transitions. [2021-03-11 14:35:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:01,479 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:01,479 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:01,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-03-11 14:35:01,479 INFO L428 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:01,479 INFO L82 PathProgramCache]: Analyzing trace with hash 504306274, now seen corresponding path program 283 times [2021-03-11 14:35:01,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:01,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984828677] [2021-03-11 14:35:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:01,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:01,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:01,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:01,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:01,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:01,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:01,519 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:01,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:01,542 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:01,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:01,561 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:01,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:01,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984828677] [2021-03-11 14:35:01,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:01,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:01,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115607411] [2021-03-11 14:35:01,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:01,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:01,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:01,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:01,580 INFO L87 Difference]: Start difference. First operand 189 states and 553 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:01,656 INFO L93 Difference]: Finished difference Result 329 states and 825 transitions. [2021-03-11 14:35:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:01,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:01,657 INFO L225 Difference]: With dead ends: 329 [2021-03-11 14:35:01,657 INFO L226 Difference]: Without dead ends: 315 [2021-03-11 14:35:01,657 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:01,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-03-11 14:35:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 193. [2021-03-11 14:35:01,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.9322916666666665) internal successors, (563), 192 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 563 transitions. [2021-03-11 14:35:01,660 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 563 transitions. Word has length 19 [2021-03-11 14:35:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:01,660 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 563 transitions. [2021-03-11 14:35:01,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 563 transitions. [2021-03-11 14:35:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:01,660 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:01,660 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:01,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-03-11 14:35:01,661 INFO L428 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:01,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1624436104, now seen corresponding path program 284 times [2021-03-11 14:35:01,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:01,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442422413] [2021-03-11 14:35:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:01,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:01,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:01,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:01,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:01,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:01,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:01,704 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:01,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:01,726 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:01,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:01,746 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:01,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:01,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442422413] [2021-03-11 14:35:01,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:01,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:01,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024895544] [2021-03-11 14:35:01,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:01,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:01,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:01,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:01,765 INFO L87 Difference]: Start difference. First operand 193 states and 563 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:01,815 INFO L93 Difference]: Finished difference Result 325 states and 814 transitions. [2021-03-11 14:35:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:01,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:01,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:01,816 INFO L225 Difference]: With dead ends: 325 [2021-03-11 14:35:01,816 INFO L226 Difference]: Without dead ends: 313 [2021-03-11 14:35:01,816 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-03-11 14:35:01,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 191. [2021-03-11 14:35:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.9368421052631577) internal successors, (558), 190 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 558 transitions. [2021-03-11 14:35:01,819 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 558 transitions. Word has length 19 [2021-03-11 14:35:01,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:01,819 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 558 transitions. [2021-03-11 14:35:01,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 558 transitions. [2021-03-11 14:35:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:01,819 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:01,819 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:01,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-03-11 14:35:01,819 INFO L428 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:01,819 INFO L82 PathProgramCache]: Analyzing trace with hash -568779106, now seen corresponding path program 285 times [2021-03-11 14:35:01,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:01,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497061015] [2021-03-11 14:35:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:01,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:01,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:01,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:01,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:01,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:01,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:01,858 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:01,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:01,872 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:01,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:01,891 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:01,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:01,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497061015] [2021-03-11 14:35:01,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:01,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:01,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861712190] [2021-03-11 14:35:01,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:01,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:01,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:01,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:01,910 INFO L87 Difference]: Start difference. First operand 191 states and 558 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:01,977 INFO L93 Difference]: Finished difference Result 330 states and 825 transitions. [2021-03-11 14:35:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:01,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:01,978 INFO L225 Difference]: With dead ends: 330 [2021-03-11 14:35:01,978 INFO L226 Difference]: Without dead ends: 316 [2021-03-11 14:35:01,978 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-03-11 14:35:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 196. [2021-03-11 14:35:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.9128205128205127) internal successors, (568), 195 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 568 transitions. [2021-03-11 14:35:01,981 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 568 transitions. Word has length 19 [2021-03-11 14:35:01,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:01,981 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 568 transitions. [2021-03-11 14:35:01,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 568 transitions. [2021-03-11 14:35:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:01,982 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:01,982 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:01,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-03-11 14:35:01,982 INFO L428 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:01,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:01,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1210836024, now seen corresponding path program 286 times [2021-03-11 14:35:01,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:01,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929661635] [2021-03-11 14:35:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:01,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:01,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:01,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:01,992 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:01,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:02,008 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:02,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:02,026 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:02,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:02,040 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:02,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:02,060 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:02,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:02,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929661635] [2021-03-11 14:35:02,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:02,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:02,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521609281] [2021-03-11 14:35:02,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:02,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:02,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:02,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:02,079 INFO L87 Difference]: Start difference. First operand 196 states and 568 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:02,147 INFO L93 Difference]: Finished difference Result 329 states and 818 transitions. [2021-03-11 14:35:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:02,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:02,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:02,147 INFO L225 Difference]: With dead ends: 329 [2021-03-11 14:35:02,148 INFO L226 Difference]: Without dead ends: 311 [2021-03-11 14:35:02,148 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-03-11 14:35:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 191. [2021-03-11 14:35:02,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.9263157894736844) internal successors, (556), 190 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 556 transitions. [2021-03-11 14:35:02,150 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 556 transitions. Word has length 19 [2021-03-11 14:35:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:02,150 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 556 transitions. [2021-03-11 14:35:02,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 556 transitions. [2021-03-11 14:35:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:02,151 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:02,151 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:02,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-03-11 14:35:02,151 INFO L428 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:02,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:02,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1594820036, now seen corresponding path program 287 times [2021-03-11 14:35:02,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:02,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924742948] [2021-03-11 14:35:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:02,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:02,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:02,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:02,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:02,173 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:02,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:02,190 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:02,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:02,214 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:02,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:02,234 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:02,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:02,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924742948] [2021-03-11 14:35:02,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:02,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:02,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618651689] [2021-03-11 14:35:02,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:02,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:02,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:02,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:02,253 INFO L87 Difference]: Start difference. First operand 191 states and 556 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:02,302 INFO L93 Difference]: Finished difference Result 319 states and 795 transitions. [2021-03-11 14:35:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:02,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:02,303 INFO L225 Difference]: With dead ends: 319 [2021-03-11 14:35:02,303 INFO L226 Difference]: Without dead ends: 309 [2021-03-11 14:35:02,303 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-03-11 14:35:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 193. [2021-03-11 14:35:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.9114583333333335) internal successors, (559), 192 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 559 transitions. [2021-03-11 14:35:02,306 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 559 transitions. Word has length 19 [2021-03-11 14:35:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:02,306 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 559 transitions. [2021-03-11 14:35:02,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 559 transitions. [2021-03-11 14:35:02,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:02,306 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:02,306 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:02,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-03-11 14:35:02,306 INFO L428 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:02,306 INFO L82 PathProgramCache]: Analyzing trace with hash -105415040, now seen corresponding path program 288 times [2021-03-11 14:35:02,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:02,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506186741] [2021-03-11 14:35:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:02,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:02,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:02,316 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:02,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:02,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:02,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:02,345 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:02,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:02,369 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:02,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:02,388 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:02,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:02,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506186741] [2021-03-11 14:35:02,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:02,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:02,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949231912] [2021-03-11 14:35:02,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:02,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:02,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:02,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:02,407 INFO L87 Difference]: Start difference. First operand 193 states and 559 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:02,466 INFO L93 Difference]: Finished difference Result 317 states and 790 transitions. [2021-03-11 14:35:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:02,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:02,467 INFO L225 Difference]: With dead ends: 317 [2021-03-11 14:35:02,467 INFO L226 Difference]: Without dead ends: 295 [2021-03-11 14:35:02,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:02,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-03-11 14:35:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 184. [2021-03-11 14:35:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9672131147540983) internal successors, (543), 183 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2021-03-11 14:35:02,470 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 19 [2021-03-11 14:35:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:02,470 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2021-03-11 14:35:02,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2021-03-11 14:35:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:02,470 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:02,470 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:02,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-03-11 14:35:02,470 INFO L428 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:02,471 INFO L82 PathProgramCache]: Analyzing trace with hash -907792650, now seen corresponding path program 289 times [2021-03-11 14:35:02,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:02,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136253171] [2021-03-11 14:35:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:02,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:02,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:02,481 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:02,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:02,494 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:02,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:02,513 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:02,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:02,528 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:02,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:02,548 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:02,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:02,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136253171] [2021-03-11 14:35:02,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:02,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:02,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295443530] [2021-03-11 14:35:02,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:02,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:02,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:02,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:02,568 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:02,618 INFO L93 Difference]: Finished difference Result 330 states and 816 transitions. [2021-03-11 14:35:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:02,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:02,619 INFO L225 Difference]: With dead ends: 330 [2021-03-11 14:35:02,619 INFO L226 Difference]: Without dead ends: 314 [2021-03-11 14:35:02,619 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-03-11 14:35:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 199. [2021-03-11 14:35:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2021-03-11 14:35:02,622 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 19 [2021-03-11 14:35:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:02,622 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2021-03-11 14:35:02,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2021-03-11 14:35:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:02,623 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:02,623 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:02,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-03-11 14:35:02,623 INFO L428 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:02,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:02,623 INFO L82 PathProgramCache]: Analyzing trace with hash -533141464, now seen corresponding path program 290 times [2021-03-11 14:35:02,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:02,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778983230] [2021-03-11 14:35:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:02,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:02,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:02,633 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:02,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:02,646 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:02,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:02,665 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:02,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:02,680 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:02,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:02,700 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:02,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:02,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778983230] [2021-03-11 14:35:02,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:02,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:02,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099404145] [2021-03-11 14:35:02,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:02,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:02,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:02,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:02,719 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:02,781 INFO L93 Difference]: Finished difference Result 328 states and 806 transitions. [2021-03-11 14:35:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:02,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:02,781 INFO L225 Difference]: With dead ends: 328 [2021-03-11 14:35:02,782 INFO L226 Difference]: Without dead ends: 306 [2021-03-11 14:35:02,782 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-03-11 14:35:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 191. [2021-03-11 14:35:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.957894736842105) internal successors, (562), 190 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 562 transitions. [2021-03-11 14:35:02,784 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 562 transitions. Word has length 19 [2021-03-11 14:35:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:02,784 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 562 transitions. [2021-03-11 14:35:02,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 562 transitions. [2021-03-11 14:35:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:02,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:02,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:02,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-03-11 14:35:02,785 INFO L428 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:02,785 INFO L82 PathProgramCache]: Analyzing trace with hash -703191568, now seen corresponding path program 291 times [2021-03-11 14:35:02,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:02,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552712908] [2021-03-11 14:35:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:02,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:02,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:02,795 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:02,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:02,808 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:02,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:02,827 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:02,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:02,854 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:02,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:02,874 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:02,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:02,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552712908] [2021-03-11 14:35:02,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:02,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:02,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407426127] [2021-03-11 14:35:02,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:02,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:02,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:02,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:02,893 INFO L87 Difference]: Start difference. First operand 191 states and 562 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:02,939 INFO L93 Difference]: Finished difference Result 321 states and 789 transitions. [2021-03-11 14:35:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:02,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:02,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:02,940 INFO L225 Difference]: With dead ends: 321 [2021-03-11 14:35:02,940 INFO L226 Difference]: Without dead ends: 305 [2021-03-11 14:35:02,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-03-11 14:35:02,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 194. [2021-03-11 14:35:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.9326424870466323) internal successors, (566), 193 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 566 transitions. [2021-03-11 14:35:02,943 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 566 transitions. Word has length 19 [2021-03-11 14:35:02,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:02,943 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 566 transitions. [2021-03-11 14:35:02,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 566 transitions. [2021-03-11 14:35:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:02,943 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:02,943 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:02,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-03-11 14:35:02,944 INFO L428 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:02,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:02,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1440049182, now seen corresponding path program 292 times [2021-03-11 14:35:02,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:02,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137469612] [2021-03-11 14:35:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:02,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:02,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:02,956 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:02,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:02,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:02,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:02,988 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:02,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:03,010 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:03,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:03,029 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:03,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137469612] [2021-03-11 14:35:03,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:03,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045311930] [2021-03-11 14:35:03,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:03,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:03,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:03,049 INFO L87 Difference]: Start difference. First operand 194 states and 566 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,116 INFO L93 Difference]: Finished difference Result 315 states and 774 transitions. [2021-03-11 14:35:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:03,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:03,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,117 INFO L225 Difference]: With dead ends: 315 [2021-03-11 14:35:03,117 INFO L226 Difference]: Without dead ends: 302 [2021-03-11 14:35:03,117 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:03,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-03-11 14:35:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 191. [2021-03-11 14:35:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.942105263157895) internal successors, (559), 190 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 559 transitions. [2021-03-11 14:35:03,120 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 559 transitions. Word has length 19 [2021-03-11 14:35:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,120 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 559 transitions. [2021-03-11 14:35:03,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 559 transitions. [2021-03-11 14:35:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:03,121 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,121 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-03-11 14:35:03,121 INFO L428 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2101207602, now seen corresponding path program 293 times [2021-03-11 14:35:03,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574115685] [2021-03-11 14:35:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:03,132 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:03,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:03,145 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:03,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:03,167 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:03,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:03,192 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:03,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:03,211 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:03,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574115685] [2021-03-11 14:35:03,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:03,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795515741] [2021-03-11 14:35:03,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:03,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:03,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:03,230 INFO L87 Difference]: Start difference. First operand 191 states and 559 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,292 INFO L93 Difference]: Finished difference Result 316 states and 778 transitions. [2021-03-11 14:35:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:03,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:03,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,292 INFO L225 Difference]: With dead ends: 316 [2021-03-11 14:35:03,292 INFO L226 Difference]: Without dead ends: 302 [2021-03-11 14:35:03,292 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-03-11 14:35:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 193. [2021-03-11 14:35:03,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.9270833333333335) internal successors, (562), 192 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 562 transitions. [2021-03-11 14:35:03,295 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 562 transitions. Word has length 19 [2021-03-11 14:35:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,295 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 562 transitions. [2021-03-11 14:35:03,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 562 transitions. [2021-03-11 14:35:03,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:03,296 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,296 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-03-11 14:35:03,296 INFO L428 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1319424368, now seen corresponding path program 294 times [2021-03-11 14:35:03,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446594950] [2021-03-11 14:35:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:03,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:03,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:03,319 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:03,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:03,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:03,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:03,363 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:03,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:03,381 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:03,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446594950] [2021-03-11 14:35:03,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:03,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777440251] [2021-03-11 14:35:03,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:03,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:03,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:03,400 INFO L87 Difference]: Start difference. First operand 193 states and 562 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,487 INFO L93 Difference]: Finished difference Result 312 states and 767 transitions. [2021-03-11 14:35:03,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:03,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:03,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,488 INFO L225 Difference]: With dead ends: 312 [2021-03-11 14:35:03,488 INFO L226 Difference]: Without dead ends: 296 [2021-03-11 14:35:03,488 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:03,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-03-11 14:35:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 187. [2021-03-11 14:35:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9623655913978495) internal successors, (551), 186 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2021-03-11 14:35:03,490 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 19 [2021-03-11 14:35:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,490 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2021-03-11 14:35:03,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2021-03-11 14:35:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:03,491 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,491 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-03-11 14:35:03,491 INFO L428 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1330278376, now seen corresponding path program 295 times [2021-03-11 14:35:03,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975373314] [2021-03-11 14:35:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:03,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:03,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:03,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:03,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:03,531 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:03,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:03,546 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:03,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:03,565 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:03,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975373314] [2021-03-11 14:35:03,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:03,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457564738] [2021-03-11 14:35:03,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:03,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:03,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:03,584 INFO L87 Difference]: Start difference. First operand 187 states and 551 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,634 INFO L93 Difference]: Finished difference Result 318 states and 780 transitions. [2021-03-11 14:35:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:03,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,634 INFO L225 Difference]: With dead ends: 318 [2021-03-11 14:35:03,635 INFO L226 Difference]: Without dead ends: 302 [2021-03-11 14:35:03,635 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-03-11 14:35:03,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 199. [2021-03-11 14:35:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.914141414141414) internal successors, (577), 198 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 577 transitions. [2021-03-11 14:35:03,638 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 577 transitions. Word has length 19 [2021-03-11 14:35:03,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,638 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 577 transitions. [2021-03-11 14:35:03,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 577 transitions. [2021-03-11 14:35:03,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:03,638 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,639 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-03-11 14:35:03,639 INFO L428 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,639 INFO L82 PathProgramCache]: Analyzing trace with hash -955627190, now seen corresponding path program 296 times [2021-03-11 14:35:03,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330356071] [2021-03-11 14:35:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:03,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:03,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:03,667 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:03,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:03,685 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:03,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:03,700 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:03,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:03,719 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:03,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330356071] [2021-03-11 14:35:03,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:03,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990766900] [2021-03-11 14:35:03,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:03,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:03,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:03,740 INFO L87 Difference]: Start difference. First operand 199 states and 577 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,807 INFO L93 Difference]: Finished difference Result 316 states and 770 transitions. [2021-03-11 14:35:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:03,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,808 INFO L225 Difference]: With dead ends: 316 [2021-03-11 14:35:03,808 INFO L226 Difference]: Without dead ends: 294 [2021-03-11 14:35:03,808 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:03,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-03-11 14:35:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 191. [2021-03-11 14:35:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.942105263157895) internal successors, (559), 190 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 559 transitions. [2021-03-11 14:35:03,810 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 559 transitions. Word has length 19 [2021-03-11 14:35:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,810 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 559 transitions. [2021-03-11 14:35:03,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 559 transitions. [2021-03-11 14:35:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:03,811 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,811 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-03-11 14:35:03,811 INFO L428 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,811 INFO L82 PathProgramCache]: Analyzing trace with hash -800081070, now seen corresponding path program 297 times [2021-03-11 14:35:03,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772628652] [2021-03-11 14:35:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:03,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:03,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:03,840 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:03,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:03,860 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:03,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:03,883 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:03,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:03,903 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:03,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772628652] [2021-03-11 14:35:03,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:03,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628769632] [2021-03-11 14:35:03,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:03,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:03,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:03,923 INFO L87 Difference]: Start difference. First operand 191 states and 559 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,970 INFO L93 Difference]: Finished difference Result 301 states and 738 transitions. [2021-03-11 14:35:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:03,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,971 INFO L225 Difference]: With dead ends: 301 [2021-03-11 14:35:03,971 INFO L226 Difference]: Without dead ends: 285 [2021-03-11 14:35:03,971 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:03,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-03-11 14:35:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 194. [2021-03-11 14:35:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.917098445595855) internal successors, (563), 193 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 563 transitions. [2021-03-11 14:35:03,974 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 563 transitions. Word has length 19 [2021-03-11 14:35:03,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,974 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 563 transitions. [2021-03-11 14:35:03,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 563 transitions. [2021-03-11 14:35:03,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:03,974 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,974 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-03-11 14:35:03,974 INFO L428 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,974 INFO L82 PathProgramCache]: Analyzing trace with hash -541022844, now seen corresponding path program 298 times [2021-03-11 14:35:03,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360753594] [2021-03-11 14:35:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:03,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:03,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:03,997 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:03,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,014 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:04,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:04,036 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:04,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:04,055 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:04,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:04,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360753594] [2021-03-11 14:35:04,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:04,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:04,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558155997] [2021-03-11 14:35:04,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:04,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:04,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:04,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:04,075 INFO L87 Difference]: Start difference. First operand 194 states and 563 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:04,120 INFO L93 Difference]: Finished difference Result 286 states and 714 transitions. [2021-03-11 14:35:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:04,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:04,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:04,121 INFO L225 Difference]: With dead ends: 286 [2021-03-11 14:35:04,121 INFO L226 Difference]: Without dead ends: 273 [2021-03-11 14:35:04,121 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-03-11 14:35:04,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 191. [2021-03-11 14:35:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.9263157894736844) internal successors, (556), 190 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 556 transitions. [2021-03-11 14:35:04,124 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 556 transitions. Word has length 19 [2021-03-11 14:35:04,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,124 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 556 transitions. [2021-03-11 14:35:04,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 556 transitions. [2021-03-11 14:35:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:04,124 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,124 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-03-11 14:35:04,124 INFO L428 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1122224650, now seen corresponding path program 299 times [2021-03-11 14:35:04,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175734071] [2021-03-11 14:35:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:04,147 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:04,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,164 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:04,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:04,186 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:04,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:04,205 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:04,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:04,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175734071] [2021-03-11 14:35:04,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:04,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:04,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827945456] [2021-03-11 14:35:04,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:04,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:04,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:04,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:04,225 INFO L87 Difference]: Start difference. First operand 191 states and 556 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:04,285 INFO L93 Difference]: Finished difference Result 298 states and 730 transitions. [2021-03-11 14:35:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:04,286 INFO L225 Difference]: With dead ends: 298 [2021-03-11 14:35:04,286 INFO L226 Difference]: Without dead ends: 284 [2021-03-11 14:35:04,286 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-03-11 14:35:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 193. [2021-03-11 14:35:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.9114583333333335) internal successors, (559), 192 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 559 transitions. [2021-03-11 14:35:04,289 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 559 transitions. Word has length 19 [2021-03-11 14:35:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,289 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 559 transitions. [2021-03-11 14:35:04,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 559 transitions. [2021-03-11 14:35:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:04,289 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,289 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-03-11 14:35:04,289 INFO L428 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,290 INFO L82 PathProgramCache]: Analyzing trace with hash -2052612816, now seen corresponding path program 300 times [2021-03-11 14:35:04,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461193218] [2021-03-11 14:35:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,299 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:04,313 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:04,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,329 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:04,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:04,351 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:04,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:04,375 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:04,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:04,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461193218] [2021-03-11 14:35:04,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:04,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:04,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638543836] [2021-03-11 14:35:04,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:04,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:04,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:04,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:04,394 INFO L87 Difference]: Start difference. First operand 193 states and 559 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:04,446 INFO L93 Difference]: Finished difference Result 285 states and 710 transitions. [2021-03-11 14:35:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:04,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:04,447 INFO L225 Difference]: With dead ends: 285 [2021-03-11 14:35:04,447 INFO L226 Difference]: Without dead ends: 269 [2021-03-11 14:35:04,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-03-11 14:35:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 187. [2021-03-11 14:35:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.946236559139785) internal successors, (548), 186 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 548 transitions. [2021-03-11 14:35:04,450 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 548 transitions. Word has length 19 [2021-03-11 14:35:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,450 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 548 transitions. [2021-03-11 14:35:04,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 548 transitions. [2021-03-11 14:35:04,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:04,450 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,450 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-03-11 14:35:04,450 INFO L428 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1446944266, now seen corresponding path program 301 times [2021-03-11 14:35:04,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395207229] [2021-03-11 14:35:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:04,476 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:04,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,492 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:04,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:04,515 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:04,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:04,535 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:04,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:04,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395207229] [2021-03-11 14:35:04,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:04,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:04,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49870307] [2021-03-11 14:35:04,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:04,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:04,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:04,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:04,554 INFO L87 Difference]: Start difference. First operand 187 states and 548 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:04,603 INFO L93 Difference]: Finished difference Result 294 states and 721 transitions. [2021-03-11 14:35:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:04,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:04,603 INFO L225 Difference]: With dead ends: 294 [2021-03-11 14:35:04,603 INFO L226 Difference]: Without dead ends: 278 [2021-03-11 14:35:04,603 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-03-11 14:35:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 192. [2021-03-11 14:35:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.9214659685863875) internal successors, (558), 191 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 558 transitions. [2021-03-11 14:35:04,606 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 558 transitions. Word has length 19 [2021-03-11 14:35:04,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,606 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 558 transitions. [2021-03-11 14:35:04,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 558 transitions. [2021-03-11 14:35:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:04,606 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,606 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-03-11 14:35:04,607 INFO L428 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash 696296484, now seen corresponding path program 302 times [2021-03-11 14:35:04,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338758128] [2021-03-11 14:35:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:04,633 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:04,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,649 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:04,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:04,671 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:04,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:04,690 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:04,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338758128] [2021-03-11 14:35:04,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:04,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:04,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886673998] [2021-03-11 14:35:04,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:04,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:04,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:04,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:04,710 INFO L87 Difference]: Start difference. First operand 192 states and 558 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:04,772 INFO L93 Difference]: Finished difference Result 288 states and 706 transitions. [2021-03-11 14:35:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:04,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:04,773 INFO L225 Difference]: With dead ends: 288 [2021-03-11 14:35:04,773 INFO L226 Difference]: Without dead ends: 275 [2021-03-11 14:35:04,773 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-03-11 14:35:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 189. [2021-03-11 14:35:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9361702127659575) internal successors, (552), 188 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 552 transitions. [2021-03-11 14:35:04,776 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 552 transitions. Word has length 19 [2021-03-11 14:35:04,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,776 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 552 transitions. [2021-03-11 14:35:04,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,776 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 552 transitions. [2021-03-11 14:35:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:04,776 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,776 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-03-11 14:35:04,776 INFO L428 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1247585176, now seen corresponding path program 303 times [2021-03-11 14:35:04,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231142065] [2021-03-11 14:35:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:04,805 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:04,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,822 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:04,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:04,844 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:04,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:04,876 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:04,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:04,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231142065] [2021-03-11 14:35:04,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:04,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:04,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676251112] [2021-03-11 14:35:04,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:04,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:04,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:04,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:04,901 INFO L87 Difference]: Start difference. First operand 189 states and 552 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:04,963 INFO L93 Difference]: Finished difference Result 283 states and 697 transitions. [2021-03-11 14:35:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:04,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:04,964 INFO L225 Difference]: With dead ends: 283 [2021-03-11 14:35:04,964 INFO L226 Difference]: Without dead ends: 267 [2021-03-11 14:35:04,964 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-03-11 14:35:04,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 192. [2021-03-11 14:35:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.910994764397906) internal successors, (556), 191 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 556 transitions. [2021-03-11 14:35:04,967 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 556 transitions. Word has length 19 [2021-03-11 14:35:04,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,967 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 556 transitions. [2021-03-11 14:35:04,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,968 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 556 transitions. [2021-03-11 14:35:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:04,968 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,968 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-03-11 14:35:04,968 INFO L428 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1506643402, now seen corresponding path program 304 times [2021-03-11 14:35:04,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943741006] [2021-03-11 14:35:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,001 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:05,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:05,021 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:05,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:05,049 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:05,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:05,075 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:05,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943741006] [2021-03-11 14:35:05,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:05,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900651897] [2021-03-11 14:35:05,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:05,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:05,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:05,103 INFO L87 Difference]: Start difference. First operand 192 states and 556 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:05,147 INFO L93 Difference]: Finished difference Result 268 states and 673 transitions. [2021-03-11 14:35:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:05,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:05,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:05,148 INFO L225 Difference]: With dead ends: 268 [2021-03-11 14:35:05,148 INFO L226 Difference]: Without dead ends: 255 [2021-03-11 14:35:05,148 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:05,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-03-11 14:35:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 189. [2021-03-11 14:35:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.925531914893617) internal successors, (550), 188 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 550 transitions. [2021-03-11 14:35:05,151 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 550 transitions. Word has length 19 [2021-03-11 14:35:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:05,151 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 550 transitions. [2021-03-11 14:35:05,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 550 transitions. [2021-03-11 14:35:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:05,151 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:05,151 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:05,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-03-11 14:35:05,151 INFO L428 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:05,151 INFO L82 PathProgramCache]: Analyzing trace with hash 266205080, now seen corresponding path program 305 times [2021-03-11 14:35:05,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:05,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512869862] [2021-03-11 14:35:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:05,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:05,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:05,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:05,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,175 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:05,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:05,191 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:05,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:05,206 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:05,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:05,225 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:05,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512869862] [2021-03-11 14:35:05,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:05,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178397885] [2021-03-11 14:35:05,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:05,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:05,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:05,245 INFO L87 Difference]: Start difference. First operand 189 states and 550 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:05,303 INFO L93 Difference]: Finished difference Result 266 states and 669 transitions. [2021-03-11 14:35:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:05,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:05,304 INFO L225 Difference]: With dead ends: 266 [2021-03-11 14:35:05,304 INFO L226 Difference]: Without dead ends: 256 [2021-03-11 14:35:05,304 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-03-11 14:35:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 190. [2021-03-11 14:35:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9153439153439153) internal successors, (551), 189 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 551 transitions. [2021-03-11 14:35:05,306 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 551 transitions. Word has length 19 [2021-03-11 14:35:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:05,306 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 551 transitions. [2021-03-11 14:35:05,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 551 transitions. [2021-03-11 14:35:05,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:05,306 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:05,307 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:05,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-03-11 14:35:05,307 INFO L428 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:05,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:05,307 INFO L82 PathProgramCache]: Analyzing trace with hash 26562742, now seen corresponding path program 306 times [2021-03-11 14:35:05,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:05,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754339032] [2021-03-11 14:35:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:05,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:05,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:05,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:05,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,330 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:05,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:05,346 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:05,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:05,361 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:05,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:05,381 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:05,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754339032] [2021-03-11 14:35:05,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:05,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939045804] [2021-03-11 14:35:05,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:05,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:05,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:05,400 INFO L87 Difference]: Start difference. First operand 190 states and 551 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:05,443 INFO L93 Difference]: Finished difference Result 255 states and 656 transitions. [2021-03-11 14:35:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:05,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:05,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:05,444 INFO L225 Difference]: With dead ends: 255 [2021-03-11 14:35:05,444 INFO L226 Difference]: Without dead ends: 242 [2021-03-11 14:35:05,444 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-03-11 14:35:05,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 187. [2021-03-11 14:35:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.935483870967742) internal successors, (546), 186 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 546 transitions. [2021-03-11 14:35:05,447 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 546 transitions. Word has length 19 [2021-03-11 14:35:05,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:05,447 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 546 transitions. [2021-03-11 14:35:05,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,447 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 546 transitions. [2021-03-11 14:35:05,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:05,448 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:05,448 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:05,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-03-11 14:35:05,448 INFO L428 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:05,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1887873640, now seen corresponding path program 307 times [2021-03-11 14:35:05,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:05,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697915422] [2021-03-11 14:35:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:05,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:05,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:05,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:05,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,476 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:05,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:05,497 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:05,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:05,526 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:05,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:05,548 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:05,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697915422] [2021-03-11 14:35:05,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:05,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819998495] [2021-03-11 14:35:05,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:05,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:05,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:05,572 INFO L87 Difference]: Start difference. First operand 187 states and 546 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:05,644 INFO L93 Difference]: Finished difference Result 287 states and 706 transitions. [2021-03-11 14:35:05,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:05,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:05,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:05,645 INFO L225 Difference]: With dead ends: 287 [2021-03-11 14:35:05,645 INFO L226 Difference]: Without dead ends: 273 [2021-03-11 14:35:05,645 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 149.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:05,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-03-11 14:35:05,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 190. [2021-03-11 14:35:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9206349206349205) internal successors, (552), 189 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 552 transitions. [2021-03-11 14:35:05,649 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 552 transitions. Word has length 19 [2021-03-11 14:35:05,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:05,649 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 552 transitions. [2021-03-11 14:35:05,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 552 transitions. [2021-03-11 14:35:05,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:05,649 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:05,649 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:05,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-03-11 14:35:05,649 INFO L428 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:05,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:05,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1013538314, now seen corresponding path program 308 times [2021-03-11 14:35:05,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:05,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627988858] [2021-03-11 14:35:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:05,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:05,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:05,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:05,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:05,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:05,698 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:05,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:05,728 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:05,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:05,751 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:05,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627988858] [2021-03-11 14:35:05,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:05,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412687263] [2021-03-11 14:35:05,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:05,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:05,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:05,771 INFO L87 Difference]: Start difference. First operand 190 states and 552 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:05,832 INFO L93 Difference]: Finished difference Result 283 states and 695 transitions. [2021-03-11 14:35:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:05,833 INFO L225 Difference]: With dead ends: 283 [2021-03-11 14:35:05,833 INFO L226 Difference]: Without dead ends: 271 [2021-03-11 14:35:05,833 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-03-11 14:35:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 188. [2021-03-11 14:35:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.93048128342246) internal successors, (548), 187 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 548 transitions. [2021-03-11 14:35:05,835 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 548 transitions. Word has length 19 [2021-03-11 14:35:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:05,835 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 548 transitions. [2021-03-11 14:35:05,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 548 transitions. [2021-03-11 14:35:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:05,836 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:05,836 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:05,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-03-11 14:35:05,836 INFO L428 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:05,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:05,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1246071542, now seen corresponding path program 309 times [2021-03-11 14:35:05,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:05,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678700139] [2021-03-11 14:35:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:05,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:05,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:05,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:05,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,859 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:05,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:05,878 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:05,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:05,901 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:05,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:05,921 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:05,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678700139] [2021-03-11 14:35:05,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:05,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100382954] [2021-03-11 14:35:05,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:05,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:05,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:05,940 INFO L87 Difference]: Start difference. First operand 188 states and 548 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,005 INFO L93 Difference]: Finished difference Result 279 states and 688 transitions. [2021-03-11 14:35:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:06,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,006 INFO L225 Difference]: With dead ends: 279 [2021-03-11 14:35:06,006 INFO L226 Difference]: Without dead ends: 265 [2021-03-11 14:35:06,006 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-03-11 14:35:06,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 190. [2021-03-11 14:35:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9153439153439153) internal successors, (551), 189 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 551 transitions. [2021-03-11 14:35:06,008 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 551 transitions. Word has length 19 [2021-03-11 14:35:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,008 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 551 transitions. [2021-03-11 14:35:06,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 551 transitions. [2021-03-11 14:35:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:06,009 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,009 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-03-11 14:35:06,009 INFO L428 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,009 INFO L82 PathProgramCache]: Analyzing trace with hash -125941712, now seen corresponding path program 310 times [2021-03-11 14:35:06,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681455973] [2021-03-11 14:35:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:06,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:06,037 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:06,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:06,058 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:06,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:06,085 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:06,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:06,106 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:06,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681455973] [2021-03-11 14:35:06,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:06,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941777358] [2021-03-11 14:35:06,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:06,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:06,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:06,125 INFO L87 Difference]: Start difference. First operand 190 states and 551 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,168 INFO L93 Difference]: Finished difference Result 266 states and 668 transitions. [2021-03-11 14:35:06,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:06,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,169 INFO L225 Difference]: With dead ends: 266 [2021-03-11 14:35:06,169 INFO L226 Difference]: Without dead ends: 254 [2021-03-11 14:35:06,169 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-03-11 14:35:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 188. [2021-03-11 14:35:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9251336898395723) internal successors, (547), 187 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 547 transitions. [2021-03-11 14:35:06,172 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 547 transitions. Word has length 19 [2021-03-11 14:35:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,172 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 547 transitions. [2021-03-11 14:35:06,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 547 transitions. [2021-03-11 14:35:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:06,172 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,172 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-03-11 14:35:06,172 INFO L428 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,172 INFO L82 PathProgramCache]: Analyzing trace with hash 651556204, now seen corresponding path program 311 times [2021-03-11 14:35:06,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602883303] [2021-03-11 14:35:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,182 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:06,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:06,195 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:06,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:06,215 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:06,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:06,230 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:06,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:06,249 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:06,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602883303] [2021-03-11 14:35:06,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:06,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951210417] [2021-03-11 14:35:06,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:06,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:06,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:06,268 INFO L87 Difference]: Start difference. First operand 188 states and 547 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,334 INFO L93 Difference]: Finished difference Result 265 states and 666 transitions. [2021-03-11 14:35:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,335 INFO L225 Difference]: With dead ends: 265 [2021-03-11 14:35:06,335 INFO L226 Difference]: Without dead ends: 255 [2021-03-11 14:35:06,335 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-03-11 14:35:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 189. [2021-03-11 14:35:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9148936170212765) internal successors, (548), 188 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 548 transitions. [2021-03-11 14:35:06,337 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 548 transitions. Word has length 19 [2021-03-11 14:35:06,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,337 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 548 transitions. [2021-03-11 14:35:06,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 548 transitions. [2021-03-11 14:35:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:06,338 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,338 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-03-11 14:35:06,338 INFO L428 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,338 INFO L82 PathProgramCache]: Analyzing trace with hash 411913866, now seen corresponding path program 312 times [2021-03-11 14:35:06,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998618442] [2021-03-11 14:35:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,348 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:06,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:06,361 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:06,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:06,380 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:06,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:06,395 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:06,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:06,415 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:06,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998618442] [2021-03-11 14:35:06,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:06,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104050162] [2021-03-11 14:35:06,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:06,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:06,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:06,434 INFO L87 Difference]: Start difference. First operand 189 states and 548 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,480 INFO L93 Difference]: Finished difference Result 254 states and 653 transitions. [2021-03-11 14:35:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:06,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:06,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,480 INFO L225 Difference]: With dead ends: 254 [2021-03-11 14:35:06,480 INFO L226 Difference]: Without dead ends: 239 [2021-03-11 14:35:06,480 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-03-11 14:35:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 184. [2021-03-11 14:35:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9508196721311477) internal successors, (540), 183 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 540 transitions. [2021-03-11 14:35:06,483 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 540 transitions. Word has length 19 [2021-03-11 14:35:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,483 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 540 transitions. [2021-03-11 14:35:06,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,483 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 540 transitions. [2021-03-11 14:35:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:06,483 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,483 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-03-11 14:35:06,483 INFO L428 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2756816, now seen corresponding path program 313 times [2021-03-11 14:35:06,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449640266] [2021-03-11 14:35:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:06,500 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:06,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:06,519 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:06,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:06,545 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:06,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:06,565 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:06,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449640266] [2021-03-11 14:35:06,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:06,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688417055] [2021-03-11 14:35:06,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:06,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:06,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:06,584 INFO L87 Difference]: Start difference. First operand 184 states and 540 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,629 INFO L93 Difference]: Finished difference Result 315 states and 778 transitions. [2021-03-11 14:35:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:06,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,630 INFO L225 Difference]: With dead ends: 315 [2021-03-11 14:35:06,630 INFO L226 Difference]: Without dead ends: 299 [2021-03-11 14:35:06,630 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-03-11 14:35:06,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 191. [2021-03-11 14:35:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.9368421052631577) internal successors, (558), 190 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 558 transitions. [2021-03-11 14:35:06,632 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 558 transitions. Word has length 19 [2021-03-11 14:35:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,633 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 558 transitions. [2021-03-11 14:35:06,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 558 transitions. [2021-03-11 14:35:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:06,633 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,633 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-03-11 14:35:06,633 INFO L428 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2140483934, now seen corresponding path program 314 times [2021-03-11 14:35:06,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247177200] [2021-03-11 14:35:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:06,650 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:06,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:06,669 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:06,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:06,695 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:06,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:06,714 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:06,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247177200] [2021-03-11 14:35:06,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:06,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882854300] [2021-03-11 14:35:06,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:06,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:06,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:06,734 INFO L87 Difference]: Start difference. First operand 191 states and 558 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,801 INFO L93 Difference]: Finished difference Result 309 states and 763 transitions. [2021-03-11 14:35:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:06,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:06,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,802 INFO L225 Difference]: With dead ends: 309 [2021-03-11 14:35:06,802 INFO L226 Difference]: Without dead ends: 296 [2021-03-11 14:35:06,802 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-03-11 14:35:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 188. [2021-03-11 14:35:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9518716577540105) internal successors, (552), 187 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 552 transitions. [2021-03-11 14:35:06,805 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 552 transitions. Word has length 19 [2021-03-11 14:35:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,805 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 552 transitions. [2021-03-11 14:35:06,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,805 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 552 transitions. [2021-03-11 14:35:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:06,805 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,805 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-03-11 14:35:06,805 INFO L428 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1603194670, now seen corresponding path program 315 times [2021-03-11 14:35:06,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364378753] [2021-03-11 14:35:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:06,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:06,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:06,849 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:06,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:06,870 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:06,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:06,889 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:06,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364378753] [2021-03-11 14:35:06,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:06,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168473229] [2021-03-11 14:35:06,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:06,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:06,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:06,909 INFO L87 Difference]: Start difference. First operand 188 states and 552 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,959 INFO L93 Difference]: Finished difference Result 315 states and 776 transitions. [2021-03-11 14:35:06,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:06,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:06,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,960 INFO L225 Difference]: With dead ends: 315 [2021-03-11 14:35:06,960 INFO L226 Difference]: Without dead ends: 299 [2021-03-11 14:35:06,960 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-03-11 14:35:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 191. [2021-03-11 14:35:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.9263157894736844) internal successors, (556), 190 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 556 transitions. [2021-03-11 14:35:06,962 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 556 transitions. Word has length 19 [2021-03-11 14:35:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,963 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 556 transitions. [2021-03-11 14:35:06,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 556 transitions. [2021-03-11 14:35:06,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:06,963 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,963 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-03-11 14:35:06,963 INFO L428 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1344136444, now seen corresponding path program 316 times [2021-03-11 14:35:06,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256007445] [2021-03-11 14:35:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:06,993 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:06,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:07,012 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:07,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:07,034 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:07,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:07,054 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:07,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256007445] [2021-03-11 14:35:07,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:07,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685096221] [2021-03-11 14:35:07,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:07,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:07,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:07,073 INFO L87 Difference]: Start difference. First operand 191 states and 556 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,122 INFO L93 Difference]: Finished difference Result 309 states and 761 transitions. [2021-03-11 14:35:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:07,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:07,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,122 INFO L225 Difference]: With dead ends: 309 [2021-03-11 14:35:07,122 INFO L226 Difference]: Without dead ends: 296 [2021-03-11 14:35:07,122 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-03-11 14:35:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 188. [2021-03-11 14:35:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9411764705882355) internal successors, (550), 187 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 550 transitions. [2021-03-11 14:35:07,125 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 550 transitions. Word has length 19 [2021-03-11 14:35:07,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,125 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 550 transitions. [2021-03-11 14:35:07,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 550 transitions. [2021-03-11 14:35:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:07,125 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,125 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-03-11 14:35:07,125 INFO L428 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1710392530, now seen corresponding path program 317 times [2021-03-11 14:35:07,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257464788] [2021-03-11 14:35:07,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:07,142 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:07,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:07,162 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:07,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:07,177 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:07,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:07,196 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:07,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257464788] [2021-03-11 14:35:07,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:07,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012153045] [2021-03-11 14:35:07,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:07,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:07,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:07,215 INFO L87 Difference]: Start difference. First operand 188 states and 550 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,279 INFO L93 Difference]: Finished difference Result 301 states and 745 transitions. [2021-03-11 14:35:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:07,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,280 INFO L225 Difference]: With dead ends: 301 [2021-03-11 14:35:07,280 INFO L226 Difference]: Without dead ends: 291 [2021-03-11 14:35:07,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-03-11 14:35:07,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 189. [2021-03-11 14:35:07,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9308510638297873) internal successors, (551), 188 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2021-03-11 14:35:07,282 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 19 [2021-03-11 14:35:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,283 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2021-03-11 14:35:07,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,283 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2021-03-11 14:35:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:07,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-03-11 14:35:07,283 INFO L428 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1470750192, now seen corresponding path program 318 times [2021-03-11 14:35:07,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144037686] [2021-03-11 14:35:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:07,302 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:07,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:07,321 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:07,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:07,336 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:07,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:07,356 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:07,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144037686] [2021-03-11 14:35:07,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:07,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568339411] [2021-03-11 14:35:07,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:07,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:07,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:07,376 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,427 INFO L93 Difference]: Finished difference Result 301 states and 744 transitions. [2021-03-11 14:35:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,428 INFO L225 Difference]: With dead ends: 301 [2021-03-11 14:35:07,428 INFO L226 Difference]: Without dead ends: 288 [2021-03-11 14:35:07,428 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-03-11 14:35:07,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 186. [2021-03-11 14:35:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9513513513513514) internal successors, (546), 185 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 546 transitions. [2021-03-11 14:35:07,430 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 546 transitions. Word has length 19 [2021-03-11 14:35:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,430 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 546 transitions. [2021-03-11 14:35:07,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,431 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 546 transitions. [2021-03-11 14:35:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:07,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-03-11 14:35:07,431 INFO L428 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,431 INFO L82 PathProgramCache]: Analyzing trace with hash -445655956, now seen corresponding path program 319 times [2021-03-11 14:35:07,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377354976] [2021-03-11 14:35:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:07,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:07,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:07,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:07,483 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:07,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:07,503 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:07,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377354976] [2021-03-11 14:35:07,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:07,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876605905] [2021-03-11 14:35:07,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:07,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:07,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:07,523 INFO L87 Difference]: Start difference. First operand 186 states and 546 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,568 INFO L93 Difference]: Finished difference Result 314 states and 773 transitions. [2021-03-11 14:35:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:07,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,568 INFO L225 Difference]: With dead ends: 314 [2021-03-11 14:35:07,569 INFO L226 Difference]: Without dead ends: 298 [2021-03-11 14:35:07,569 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-03-11 14:35:07,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 192. [2021-03-11 14:35:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.931937172774869) internal successors, (560), 191 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 560 transitions. [2021-03-11 14:35:07,571 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 560 transitions. Word has length 19 [2021-03-11 14:35:07,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,571 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 560 transitions. [2021-03-11 14:35:07,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 560 transitions. [2021-03-11 14:35:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:07,572 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,572 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-03-11 14:35:07,572 INFO L428 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1697584794, now seen corresponding path program 320 times [2021-03-11 14:35:07,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505506345] [2021-03-11 14:35:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:07,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:07,598 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:07,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:07,624 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:07,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:07,644 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:07,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505506345] [2021-03-11 14:35:07,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:07,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755563049] [2021-03-11 14:35:07,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:07,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:07,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:07,663 INFO L87 Difference]: Start difference. First operand 192 states and 560 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,727 INFO L93 Difference]: Finished difference Result 308 states and 758 transitions. [2021-03-11 14:35:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:07,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:07,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,728 INFO L225 Difference]: With dead ends: 308 [2021-03-11 14:35:07,728 INFO L226 Difference]: Without dead ends: 295 [2021-03-11 14:35:07,728 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-03-11 14:35:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 189. [2021-03-11 14:35:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9414893617021276) internal successors, (553), 188 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 553 transitions. [2021-03-11 14:35:07,730 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 553 transitions. Word has length 19 [2021-03-11 14:35:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,731 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 553 transitions. [2021-03-11 14:35:07,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 553 transitions. [2021-03-11 14:35:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:07,731 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,731 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-03-11 14:35:07,731 INFO L428 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,731 INFO L82 PathProgramCache]: Analyzing trace with hash -952002222, now seen corresponding path program 321 times [2021-03-11 14:35:07,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437677948] [2021-03-11 14:35:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:07,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:07,759 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:07,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:07,774 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:07,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:07,794 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:07,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437677948] [2021-03-11 14:35:07,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:07,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700155146] [2021-03-11 14:35:07,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:07,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:07,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:07,813 INFO L87 Difference]: Start difference. First operand 189 states and 553 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,862 INFO L93 Difference]: Finished difference Result 320 states and 787 transitions. [2021-03-11 14:35:07,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:07,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,863 INFO L225 Difference]: With dead ends: 320 [2021-03-11 14:35:07,863 INFO L226 Difference]: Without dead ends: 304 [2021-03-11 14:35:07,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-03-11 14:35:07,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 195. [2021-03-11 14:35:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2021-03-11 14:35:07,866 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 19 [2021-03-11 14:35:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,866 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2021-03-11 14:35:07,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2021-03-11 14:35:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:07,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,866 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-03-11 14:35:07,866 INFO L428 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1928206972, now seen corresponding path program 322 times [2021-03-11 14:35:07,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671086051] [2021-03-11 14:35:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:07,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:07,895 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:07,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:07,910 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:07,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:07,933 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:07,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671086051] [2021-03-11 14:35:07,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:07,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440142702] [2021-03-11 14:35:07,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:07,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:07,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:07,953 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,023 INFO L93 Difference]: Finished difference Result 317 states and 776 transitions. [2021-03-11 14:35:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:08,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:08,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,023 INFO L225 Difference]: With dead ends: 317 [2021-03-11 14:35:08,024 INFO L226 Difference]: Without dead ends: 298 [2021-03-11 14:35:08,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-03-11 14:35:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 189. [2021-03-11 14:35:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.925531914893617) internal successors, (550), 188 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 550 transitions. [2021-03-11 14:35:08,026 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 550 transitions. Word has length 19 [2021-03-11 14:35:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,026 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 550 transitions. [2021-03-11 14:35:08,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 550 transitions. [2021-03-11 14:35:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:08,027 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,027 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-03-11 14:35:08,027 INFO L428 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1813226296, now seen corresponding path program 323 times [2021-03-11 14:35:08,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199460039] [2021-03-11 14:35:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:08,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:08,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:08,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:08,067 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:08,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:08,086 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:08,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199460039] [2021-03-11 14:35:08,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:08,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46081342] [2021-03-11 14:35:08,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:08,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:08,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:08,105 INFO L87 Difference]: Start difference. First operand 189 states and 550 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,167 INFO L93 Difference]: Finished difference Result 304 states and 748 transitions. [2021-03-11 14:35:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:08,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:08,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,168 INFO L225 Difference]: With dead ends: 304 [2021-03-11 14:35:08,168 INFO L226 Difference]: Without dead ends: 294 [2021-03-11 14:35:08,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-03-11 14:35:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 191. [2021-03-11 14:35:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.9105263157894736) internal successors, (553), 190 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 553 transitions. [2021-03-11 14:35:08,171 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 553 transitions. Word has length 19 [2021-03-11 14:35:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,171 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 553 transitions. [2021-03-11 14:35:08,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 553 transitions. [2021-03-11 14:35:08,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:08,171 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,171 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-03-11 14:35:08,171 INFO L428 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,171 INFO L82 PathProgramCache]: Analyzing trace with hash 84178962, now seen corresponding path program 324 times [2021-03-11 14:35:08,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376742758] [2021-03-11 14:35:08,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:08,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:08,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:08,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:08,219 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:08,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:08,242 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:08,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376742758] [2021-03-11 14:35:08,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:08,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943096519] [2021-03-11 14:35:08,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:08,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:08,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:08,265 INFO L87 Difference]: Start difference. First operand 191 states and 553 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,340 INFO L93 Difference]: Finished difference Result 307 states and 753 transitions. [2021-03-11 14:35:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:08,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,341 INFO L225 Difference]: With dead ends: 307 [2021-03-11 14:35:08,341 INFO L226 Difference]: Without dead ends: 289 [2021-03-11 14:35:08,341 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-03-11 14:35:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 186. [2021-03-11 14:35:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9405405405405407) internal successors, (544), 185 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 544 transitions. [2021-03-11 14:35:08,344 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 544 transitions. Word has length 19 [2021-03-11 14:35:08,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,344 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 544 transitions. [2021-03-11 14:35:08,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 544 transitions. [2021-03-11 14:35:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:08,345 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,345 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-03-11 14:35:08,345 INFO L428 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,345 INFO L82 PathProgramCache]: Analyzing trace with hash -120059732, now seen corresponding path program 325 times [2021-03-11 14:35:08,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477972616] [2021-03-11 14:35:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:08,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:08,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:08,382 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:08,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:08,404 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:08,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:08,424 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:08,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477972616] [2021-03-11 14:35:08,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:08,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93826654] [2021-03-11 14:35:08,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:08,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:08,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:08,443 INFO L87 Difference]: Start difference. First operand 186 states and 544 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,492 INFO L93 Difference]: Finished difference Result 311 states and 761 transitions. [2021-03-11 14:35:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:08,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:08,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,493 INFO L225 Difference]: With dead ends: 311 [2021-03-11 14:35:08,493 INFO L226 Difference]: Without dead ends: 295 [2021-03-11 14:35:08,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-03-11 14:35:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 192. [2021-03-11 14:35:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.9214659685863875) internal successors, (558), 191 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 558 transitions. [2021-03-11 14:35:08,496 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 558 transitions. Word has length 19 [2021-03-11 14:35:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,496 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 558 transitions. [2021-03-11 14:35:08,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 558 transitions. [2021-03-11 14:35:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:08,496 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,496 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-03-11 14:35:08,496 INFO L428 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,496 INFO L82 PathProgramCache]: Analyzing trace with hash 138998494, now seen corresponding path program 326 times [2021-03-11 14:35:08,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019110293] [2021-03-11 14:35:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:08,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:08,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:08,530 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:08,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:08,551 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:08,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:08,571 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:08,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019110293] [2021-03-11 14:35:08,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:08,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30829883] [2021-03-11 14:35:08,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:08,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:08,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:08,590 INFO L87 Difference]: Start difference. First operand 192 states and 558 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,643 INFO L93 Difference]: Finished difference Result 305 states and 746 transitions. [2021-03-11 14:35:08,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:08,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:08,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,644 INFO L225 Difference]: With dead ends: 305 [2021-03-11 14:35:08,644 INFO L226 Difference]: Without dead ends: 292 [2021-03-11 14:35:08,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-03-11 14:35:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 189. [2021-03-11 14:35:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9308510638297873) internal successors, (551), 188 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2021-03-11 14:35:08,646 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 19 [2021-03-11 14:35:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,646 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2021-03-11 14:35:08,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2021-03-11 14:35:08,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:08,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,647 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-03-11 14:35:08,647 INFO L428 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,647 INFO L82 PathProgramCache]: Analyzing trace with hash 974031856, now seen corresponding path program 327 times [2021-03-11 14:35:08,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524840850] [2021-03-11 14:35:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:08,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:08,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:08,681 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:08,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:08,696 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:08,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:08,715 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:08,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524840850] [2021-03-11 14:35:08,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:08,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483558201] [2021-03-11 14:35:08,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:08,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:08,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:08,735 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,781 INFO L93 Difference]: Finished difference Result 311 states and 758 transitions. [2021-03-11 14:35:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:08,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,782 INFO L225 Difference]: With dead ends: 311 [2021-03-11 14:35:08,782 INFO L226 Difference]: Without dead ends: 295 [2021-03-11 14:35:08,782 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-03-11 14:35:08,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 195. [2021-03-11 14:35:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.8969072164948453) internal successors, (562), 194 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 562 transitions. [2021-03-11 14:35:08,785 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 562 transitions. Word has length 19 [2021-03-11 14:35:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,785 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 562 transitions. [2021-03-11 14:35:08,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 562 transitions. [2021-03-11 14:35:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:08,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-03-11 14:35:08,786 INFO L428 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,786 INFO L82 PathProgramCache]: Analyzing trace with hash -2172894, now seen corresponding path program 328 times [2021-03-11 14:35:08,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195238186] [2021-03-11 14:35:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:08,802 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:08,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:08,819 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:08,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:08,834 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:08,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:08,852 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:08,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195238186] [2021-03-11 14:35:08,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:08,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148578600] [2021-03-11 14:35:08,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:08,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:08,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:08,871 INFO L87 Difference]: Start difference. First operand 195 states and 562 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,941 INFO L93 Difference]: Finished difference Result 308 states and 747 transitions. [2021-03-11 14:35:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:08,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,942 INFO L225 Difference]: With dead ends: 308 [2021-03-11 14:35:08,942 INFO L226 Difference]: Without dead ends: 289 [2021-03-11 14:35:08,942 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-03-11 14:35:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 189. [2021-03-11 14:35:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9148936170212765) internal successors, (548), 188 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 548 transitions. [2021-03-11 14:35:08,945 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 548 transitions. Word has length 19 [2021-03-11 14:35:08,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,945 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 548 transitions. [2021-03-11 14:35:08,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 548 transitions. [2021-03-11 14:35:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:08,945 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,945 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-03-11 14:35:08,945 INFO L428 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1309572854, now seen corresponding path program 329 times [2021-03-11 14:35:08,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298175038] [2021-03-11 14:35:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:08,963 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:08,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:08,980 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:08,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:09,004 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:09,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:09,024 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:09,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298175038] [2021-03-11 14:35:09,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:09,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848954085] [2021-03-11 14:35:09,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:09,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:09,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:09,043 INFO L87 Difference]: Start difference. First operand 189 states and 548 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,098 INFO L93 Difference]: Finished difference Result 295 states and 719 transitions. [2021-03-11 14:35:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:09,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:09,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,099 INFO L225 Difference]: With dead ends: 295 [2021-03-11 14:35:09,099 INFO L226 Difference]: Without dead ends: 285 [2021-03-11 14:35:09,099 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-03-11 14:35:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 191. [2021-03-11 14:35:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.9) internal successors, (551), 190 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 551 transitions. [2021-03-11 14:35:09,102 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 551 transitions. Word has length 19 [2021-03-11 14:35:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,102 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 551 transitions. [2021-03-11 14:35:09,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 551 transitions. [2021-03-11 14:35:09,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:09,102 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,102 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-03-11 14:35:09,102 INFO L428 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,102 INFO L82 PathProgramCache]: Analyzing trace with hash 179832142, now seen corresponding path program 330 times [2021-03-11 14:35:09,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900607878] [2021-03-11 14:35:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:09,126 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:09,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:09,144 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:09,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:09,168 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:09,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:09,190 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:09,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900607878] [2021-03-11 14:35:09,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:09,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491906632] [2021-03-11 14:35:09,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:09,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:09,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:09,210 INFO L87 Difference]: Start difference. First operand 191 states and 551 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,277 INFO L93 Difference]: Finished difference Result 293 states and 714 transitions. [2021-03-11 14:35:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:09,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:09,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,278 INFO L225 Difference]: With dead ends: 293 [2021-03-11 14:35:09,278 INFO L226 Difference]: Without dead ends: 275 [2021-03-11 14:35:09,278 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-03-11 14:35:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 186. [2021-03-11 14:35:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9297297297297296) internal successors, (542), 185 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 542 transitions. [2021-03-11 14:35:09,280 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 542 transitions. Word has length 19 [2021-03-11 14:35:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,280 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 542 transitions. [2021-03-11 14:35:09,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 542 transitions. [2021-03-11 14:35:09,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:09,281 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,281 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-03-11 14:35:09,281 INFO L428 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,281 INFO L82 PathProgramCache]: Analyzing trace with hash -245646298, now seen corresponding path program 331 times [2021-03-11 14:35:09,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690047513] [2021-03-11 14:35:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:09,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,312 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:09,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:09,330 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:09,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:09,353 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:09,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690047513] [2021-03-11 14:35:09,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:09,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916299251] [2021-03-11 14:35:09,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:09,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:09,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:09,376 INFO L87 Difference]: Start difference. First operand 186 states and 542 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,451 INFO L93 Difference]: Finished difference Result 283 states and 694 transitions. [2021-03-11 14:35:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:09,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,452 INFO L225 Difference]: With dead ends: 283 [2021-03-11 14:35:09,452 INFO L226 Difference]: Without dead ends: 273 [2021-03-11 14:35:09,452 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-03-11 14:35:09,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 188. [2021-03-11 14:35:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9197860962566846) internal successors, (546), 187 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 546 transitions. [2021-03-11 14:35:09,456 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 546 transitions. Word has length 19 [2021-03-11 14:35:09,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,456 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 546 transitions. [2021-03-11 14:35:09,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 546 transitions. [2021-03-11 14:35:09,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:09,456 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,456 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-03-11 14:35:09,456 INFO L428 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,457 INFO L82 PathProgramCache]: Analyzing trace with hash -485288636, now seen corresponding path program 332 times [2021-03-11 14:35:09,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677022336] [2021-03-11 14:35:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:09,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,489 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:09,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:09,507 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:09,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:09,531 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:09,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677022336] [2021-03-11 14:35:09,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:09,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237066689] [2021-03-11 14:35:09,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:09,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:09,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:09,557 INFO L87 Difference]: Start difference. First operand 188 states and 546 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,611 INFO L93 Difference]: Finished difference Result 283 states and 693 transitions. [2021-03-11 14:35:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:09,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:09,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,612 INFO L225 Difference]: With dead ends: 283 [2021-03-11 14:35:09,612 INFO L226 Difference]: Without dead ends: 272 [2021-03-11 14:35:09,612 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-03-11 14:35:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 187. [2021-03-11 14:35:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.924731182795699) internal successors, (544), 186 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 544 transitions. [2021-03-11 14:35:09,615 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 544 transitions. Word has length 19 [2021-03-11 14:35:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,615 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 544 transitions. [2021-03-11 14:35:09,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 544 transitions. [2021-03-11 14:35:09,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:09,615 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,615 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-03-11 14:35:09,615 INFO L428 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1318731678, now seen corresponding path program 333 times [2021-03-11 14:35:09,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930723215] [2021-03-11 14:35:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:09,632 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,642 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:09,657 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:09,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:09,676 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:09,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930723215] [2021-03-11 14:35:09,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:09,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859430280] [2021-03-11 14:35:09,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:09,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:09,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:09,696 INFO L87 Difference]: Start difference. First operand 187 states and 544 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,758 INFO L93 Difference]: Finished difference Result 280 states and 688 transitions. [2021-03-11 14:35:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:09,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,758 INFO L225 Difference]: With dead ends: 280 [2021-03-11 14:35:09,758 INFO L226 Difference]: Without dead ends: 270 [2021-03-11 14:35:09,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-03-11 14:35:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 189. [2021-03-11 14:35:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9095744680851063) internal successors, (547), 188 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 547 transitions. [2021-03-11 14:35:09,761 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 547 transitions. Word has length 19 [2021-03-11 14:35:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,761 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 547 transitions. [2021-03-11 14:35:09,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 547 transitions. [2021-03-11 14:35:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:09,761 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,761 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-03-11 14:35:09,761 INFO L428 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,762 INFO L82 PathProgramCache]: Analyzing trace with hash -363752674, now seen corresponding path program 334 times [2021-03-11 14:35:09,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970701150] [2021-03-11 14:35:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:09,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,788 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:09,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:09,803 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:09,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:09,823 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:09,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970701150] [2021-03-11 14:35:09,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:09,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607869336] [2021-03-11 14:35:09,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:09,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:09,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:09,843 INFO L87 Difference]: Start difference. First operand 189 states and 547 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,905 INFO L93 Difference]: Finished difference Result 283 states and 693 transitions. [2021-03-11 14:35:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:09,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,906 INFO L225 Difference]: With dead ends: 283 [2021-03-11 14:35:09,906 INFO L226 Difference]: Without dead ends: 268 [2021-03-11 14:35:09,906 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-03-11 14:35:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 187. [2021-03-11 14:35:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9193548387096775) internal successors, (543), 186 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 543 transitions. [2021-03-11 14:35:09,909 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 543 transitions. Word has length 19 [2021-03-11 14:35:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,909 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 543 transitions. [2021-03-11 14:35:09,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 543 transitions. [2021-03-11 14:35:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:09,909 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,909 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-03-11 14:35:09,909 INFO L428 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,909 INFO L82 PathProgramCache]: Analyzing trace with hash 52566942, now seen corresponding path program 335 times [2021-03-11 14:35:09,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359662550] [2021-03-11 14:35:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:09,930 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,942 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:09,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:09,970 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:09,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:09,994 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:09,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359662550] [2021-03-11 14:35:10,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:10,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519889520] [2021-03-11 14:35:10,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:10,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:10,017 INFO L87 Difference]: Start difference. First operand 187 states and 543 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,074 INFO L93 Difference]: Finished difference Result 278 states and 682 transitions. [2021-03-11 14:35:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:10,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:10,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,074 INFO L225 Difference]: With dead ends: 278 [2021-03-11 14:35:10,074 INFO L226 Difference]: Without dead ends: 268 [2021-03-11 14:35:10,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-03-11 14:35:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 189. [2021-03-11 14:35:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.904255319148936) internal successors, (546), 188 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 546 transitions. [2021-03-11 14:35:10,077 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 546 transitions. Word has length 19 [2021-03-11 14:35:10,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,077 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 546 transitions. [2021-03-11 14:35:10,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,077 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 546 transitions. [2021-03-11 14:35:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:10,077 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,077 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-03-11 14:35:10,078 INFO L428 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1541971938, now seen corresponding path program 336 times [2021-03-11 14:35:10,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091114336] [2021-03-11 14:35:10,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:10,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:10,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:10,117 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:10,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:10,146 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:10,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:10,166 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:10,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091114336] [2021-03-11 14:35:10,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:10,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481578496] [2021-03-11 14:35:10,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:10,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:10,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:10,185 INFO L87 Difference]: Start difference. First operand 189 states and 546 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,252 INFO L93 Difference]: Finished difference Result 276 states and 677 transitions. [2021-03-11 14:35:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,253 INFO L225 Difference]: With dead ends: 276 [2021-03-11 14:35:10,253 INFO L226 Difference]: Without dead ends: 258 [2021-03-11 14:35:10,253 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-03-11 14:35:10,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 184. [2021-03-11 14:35:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.939890710382514) internal successors, (538), 183 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 538 transitions. [2021-03-11 14:35:10,257 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 538 transitions. Word has length 19 [2021-03-11 14:35:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,257 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 538 transitions. [2021-03-11 14:35:10,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 538 transitions. [2021-03-11 14:35:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:10,257 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,257 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-03-11 14:35:10,257 INFO L428 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1064346626, now seen corresponding path program 337 times [2021-03-11 14:35:10,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182222384] [2021-03-11 14:35:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:10,275 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:10,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:10,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:10,320 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:10,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:10,339 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:10,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182222384] [2021-03-11 14:35:10,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:10,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722869190] [2021-03-11 14:35:10,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:10,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:10,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:10,358 INFO L87 Difference]: Start difference. First operand 184 states and 538 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,423 INFO L93 Difference]: Finished difference Result 296 states and 736 transitions. [2021-03-11 14:35:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:10,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,424 INFO L225 Difference]: With dead ends: 296 [2021-03-11 14:35:10,424 INFO L226 Difference]: Without dead ends: 282 [2021-03-11 14:35:10,424 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-11 14:35:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 188. [2021-03-11 14:35:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.93048128342246) internal successors, (548), 187 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 548 transitions. [2021-03-11 14:35:10,426 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 548 transitions. Word has length 19 [2021-03-11 14:35:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,427 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 548 transitions. [2021-03-11 14:35:10,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 548 transitions. [2021-03-11 14:35:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:10,427 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,427 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-03-11 14:35:10,427 INFO L428 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,427 INFO L82 PathProgramCache]: Analyzing trace with hash 190011300, now seen corresponding path program 338 times [2021-03-11 14:35:10,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790746047] [2021-03-11 14:35:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:10,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:10,467 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:10,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:10,494 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:10,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:10,514 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:10,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790746047] [2021-03-11 14:35:10,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:10,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004890970] [2021-03-11 14:35:10,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:10,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:10,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:10,533 INFO L87 Difference]: Start difference. First operand 188 states and 548 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,593 INFO L93 Difference]: Finished difference Result 292 states and 725 transitions. [2021-03-11 14:35:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:10,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,594 INFO L225 Difference]: With dead ends: 292 [2021-03-11 14:35:10,594 INFO L226 Difference]: Without dead ends: 280 [2021-03-11 14:35:10,594 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-03-11 14:35:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 186. [2021-03-11 14:35:10,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9405405405405407) internal successors, (544), 185 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 544 transitions. [2021-03-11 14:35:10,597 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 544 transitions. Word has length 19 [2021-03-11 14:35:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,597 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 544 transitions. [2021-03-11 14:35:10,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 544 transitions. [2021-03-11 14:35:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:10,597 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,597 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-03-11 14:35:10,597 INFO L428 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2069598556, now seen corresponding path program 339 times [2021-03-11 14:35:10,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108118022] [2021-03-11 14:35:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:10,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:10,645 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:10,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:10,675 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:10,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:10,696 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:10,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108118022] [2021-03-11 14:35:10,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:10,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157751488] [2021-03-11 14:35:10,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:10,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:10,715 INFO L87 Difference]: Start difference. First operand 186 states and 544 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,775 INFO L93 Difference]: Finished difference Result 296 states and 735 transitions. [2021-03-11 14:35:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:10,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,775 INFO L225 Difference]: With dead ends: 296 [2021-03-11 14:35:10,775 INFO L226 Difference]: Without dead ends: 282 [2021-03-11 14:35:10,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-11 14:35:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 188. [2021-03-11 14:35:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9251336898395723) internal successors, (547), 187 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 547 transitions. [2021-03-11 14:35:10,778 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 547 transitions. Word has length 19 [2021-03-11 14:35:10,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,778 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 547 transitions. [2021-03-11 14:35:10,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 547 transitions. [2021-03-11 14:35:10,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:10,783 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,783 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-03-11 14:35:10,783 INFO L428 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,784 INFO L82 PathProgramCache]: Analyzing trace with hash -949468726, now seen corresponding path program 340 times [2021-03-11 14:35:10,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561713910] [2021-03-11 14:35:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:10,807 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:10,834 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:10,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:10,867 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:10,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:10,892 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:10,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561713910] [2021-03-11 14:35:10,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:10,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490001773] [2021-03-11 14:35:10,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:10,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:10,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:10,913 INFO L87 Difference]: Start difference. First operand 188 states and 547 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,967 INFO L93 Difference]: Finished difference Result 292 states and 724 transitions. [2021-03-11 14:35:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:10,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:10,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,968 INFO L225 Difference]: With dead ends: 292 [2021-03-11 14:35:10,968 INFO L226 Difference]: Without dead ends: 280 [2021-03-11 14:35:10,968 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-03-11 14:35:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 186. [2021-03-11 14:35:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9351351351351354) internal successors, (543), 185 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 543 transitions. [2021-03-11 14:35:10,970 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 543 transitions. Word has length 19 [2021-03-11 14:35:10,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,970 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 543 transitions. [2021-03-11 14:35:10,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,970 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 543 transitions. [2021-03-11 14:35:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:10,971 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,971 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-03-11 14:35:10,971 INFO L428 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,971 INFO L82 PathProgramCache]: Analyzing trace with hash -171970810, now seen corresponding path program 341 times [2021-03-11 14:35:10,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169238880] [2021-03-11 14:35:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:10,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:11,007 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:11,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:11,023 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:11,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:11,042 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:11,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169238880] [2021-03-11 14:35:11,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:11,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501324597] [2021-03-11 14:35:11,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:11,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:11,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:11,062 INFO L87 Difference]: Start difference. First operand 186 states and 543 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,125 INFO L93 Difference]: Finished difference Result 287 states and 713 transitions. [2021-03-11 14:35:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:11,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,125 INFO L225 Difference]: With dead ends: 287 [2021-03-11 14:35:11,126 INFO L226 Difference]: Without dead ends: 277 [2021-03-11 14:35:11,126 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-03-11 14:35:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 187. [2021-03-11 14:35:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.924731182795699) internal successors, (544), 186 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 544 transitions. [2021-03-11 14:35:11,128 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 544 transitions. Word has length 19 [2021-03-11 14:35:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,128 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 544 transitions. [2021-03-11 14:35:11,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,128 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 544 transitions. [2021-03-11 14:35:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:11,128 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,129 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-03-11 14:35:11,129 INFO L428 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,129 INFO L82 PathProgramCache]: Analyzing trace with hash -411613148, now seen corresponding path program 342 times [2021-03-11 14:35:11,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708494877] [2021-03-11 14:35:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:11,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:11,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:11,165 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:11,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:11,180 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:11,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:11,201 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:11,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708494877] [2021-03-11 14:35:11,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:11,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973395768] [2021-03-11 14:35:11,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:11,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:11,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:11,220 INFO L87 Difference]: Start difference. First operand 187 states and 544 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,276 INFO L93 Difference]: Finished difference Result 287 states and 712 transitions. [2021-03-11 14:35:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:11,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,277 INFO L225 Difference]: With dead ends: 287 [2021-03-11 14:35:11,277 INFO L226 Difference]: Without dead ends: 275 [2021-03-11 14:35:11,277 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-03-11 14:35:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 185. [2021-03-11 14:35:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9402173913043477) internal successors, (541), 184 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 541 transitions. [2021-03-11 14:35:11,280 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 541 transitions. Word has length 19 [2021-03-11 14:35:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,280 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 541 transitions. [2021-03-11 14:35:11,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 541 transitions. [2021-03-11 14:35:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:11,280 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,280 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-03-11 14:35:11,280 INFO L428 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2136529082, now seen corresponding path program 343 times [2021-03-11 14:35:11,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774436175] [2021-03-11 14:35:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:11,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:11,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:11,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:11,333 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:11,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:11,353 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:11,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774436175] [2021-03-11 14:35:11,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:11,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878075836] [2021-03-11 14:35:11,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:11,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:11,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:11,373 INFO L87 Difference]: Start difference. First operand 185 states and 541 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,440 INFO L93 Difference]: Finished difference Result 297 states and 737 transitions. [2021-03-11 14:35:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,441 INFO L225 Difference]: With dead ends: 297 [2021-03-11 14:35:11,441 INFO L226 Difference]: Without dead ends: 283 [2021-03-11 14:35:11,441 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-03-11 14:35:11,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 189. [2021-03-11 14:35:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9308510638297873) internal successors, (551), 188 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2021-03-11 14:35:11,444 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 19 [2021-03-11 14:35:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,444 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2021-03-11 14:35:11,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2021-03-11 14:35:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:11,444 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,444 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-03-11 14:35:11,444 INFO L428 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1284102888, now seen corresponding path program 344 times [2021-03-11 14:35:11,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956047698] [2021-03-11 14:35:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:11,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:11,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:11,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:11,498 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:11,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:11,518 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:11,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956047698] [2021-03-11 14:35:11,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:11,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234940788] [2021-03-11 14:35:11,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:11,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:11,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:11,538 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,607 INFO L93 Difference]: Finished difference Result 293 states and 726 transitions. [2021-03-11 14:35:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:11,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,608 INFO L225 Difference]: With dead ends: 293 [2021-03-11 14:35:11,608 INFO L226 Difference]: Without dead ends: 281 [2021-03-11 14:35:11,608 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-03-11 14:35:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 187. [2021-03-11 14:35:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.935483870967742) internal successors, (546), 186 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 546 transitions. [2021-03-11 14:35:11,611 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 546 transitions. Word has length 19 [2021-03-11 14:35:11,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,611 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 546 transitions. [2021-03-11 14:35:11,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 546 transitions. [2021-03-11 14:35:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:11,611 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,611 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-03-11 14:35:11,611 INFO L428 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1698016266, now seen corresponding path program 345 times [2021-03-11 14:35:11,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625195159] [2021-03-11 14:35:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:11,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:11,638 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:11,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:11,653 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:11,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:11,677 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:11,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625195159] [2021-03-11 14:35:11,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:11,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400463239] [2021-03-11 14:35:11,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:11,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:11,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:11,697 INFO L87 Difference]: Start difference. First operand 187 states and 546 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,761 INFO L93 Difference]: Finished difference Result 303 states and 752 transitions. [2021-03-11 14:35:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:11,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,762 INFO L225 Difference]: With dead ends: 303 [2021-03-11 14:35:11,762 INFO L226 Difference]: Without dead ends: 289 [2021-03-11 14:35:11,762 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-03-11 14:35:11,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 192. [2021-03-11 14:35:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.910994764397906) internal successors, (556), 191 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 556 transitions. [2021-03-11 14:35:11,765 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 556 transitions. Word has length 19 [2021-03-11 14:35:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,765 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 556 transitions. [2021-03-11 14:35:11,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 556 transitions. [2021-03-11 14:35:11,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:11,765 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,765 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-03-11 14:35:11,765 INFO L428 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1628066990, now seen corresponding path program 346 times [2021-03-11 14:35:11,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492088414] [2021-03-11 14:35:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:11,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:11,792 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:11,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:11,807 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:11,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:11,826 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:11,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492088414] [2021-03-11 14:35:11,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:11,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362466250] [2021-03-11 14:35:11,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:11,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:11,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:11,845 INFO L87 Difference]: Start difference. First operand 192 states and 556 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,908 INFO L93 Difference]: Finished difference Result 302 states and 745 transitions. [2021-03-11 14:35:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,909 INFO L225 Difference]: With dead ends: 302 [2021-03-11 14:35:11,909 INFO L226 Difference]: Without dead ends: 284 [2021-03-11 14:35:11,909 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-03-11 14:35:11,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 187. [2021-03-11 14:35:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.924731182795699) internal successors, (544), 186 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 544 transitions. [2021-03-11 14:35:11,911 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 544 transitions. Word has length 19 [2021-03-11 14:35:11,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,911 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 544 transitions. [2021-03-11 14:35:11,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,912 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 544 transitions. [2021-03-11 14:35:11,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:11,912 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,912 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-03-11 14:35:11,912 INFO L428 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1237178862, now seen corresponding path program 347 times [2021-03-11 14:35:11,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334096561] [2021-03-11 14:35:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:11,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:11,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:11,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:11,953 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:11,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:11,973 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:11,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334096561] [2021-03-11 14:35:11,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:11,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974351991] [2021-03-11 14:35:11,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:11,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:11,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:11,993 INFO L87 Difference]: Start difference. First operand 187 states and 544 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,052 INFO L93 Difference]: Finished difference Result 292 states and 722 transitions. [2021-03-11 14:35:12,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:12,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,053 INFO L225 Difference]: With dead ends: 292 [2021-03-11 14:35:12,053 INFO L226 Difference]: Without dead ends: 282 [2021-03-11 14:35:12,053 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-11 14:35:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 189. [2021-03-11 14:35:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9095744680851063) internal successors, (547), 188 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 547 transitions. [2021-03-11 14:35:12,056 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 547 transitions. Word has length 19 [2021-03-11 14:35:12,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,056 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 547 transitions. [2021-03-11 14:35:12,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 547 transitions. [2021-03-11 14:35:12,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:12,056 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,056 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-03-11 14:35:12,056 INFO L428 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1328741100, now seen corresponding path program 348 times [2021-03-11 14:35:12,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644737047] [2021-03-11 14:35:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:12,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:12,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,098 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:12,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:12,118 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:12,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644737047] [2021-03-11 14:35:12,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:12,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564073771] [2021-03-11 14:35:12,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:12,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:12,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:12,138 INFO L87 Difference]: Start difference. First operand 189 states and 547 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,208 INFO L93 Difference]: Finished difference Result 295 states and 727 transitions. [2021-03-11 14:35:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:12,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,209 INFO L225 Difference]: With dead ends: 295 [2021-03-11 14:35:12,209 INFO L226 Difference]: Without dead ends: 278 [2021-03-11 14:35:12,209 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-03-11 14:35:12,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 185. [2021-03-11 14:35:12,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9347826086956523) internal successors, (540), 184 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 540 transitions. [2021-03-11 14:35:12,211 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 540 transitions. Word has length 19 [2021-03-11 14:35:12,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,211 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 540 transitions. [2021-03-11 14:35:12,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,212 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 540 transitions. [2021-03-11 14:35:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:12,212 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,212 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-03-11 14:35:12,212 INFO L428 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1719022474, now seen corresponding path program 349 times [2021-03-11 14:35:12,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124999816] [2021-03-11 14:35:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:12,235 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,252 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:12,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:12,275 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:12,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:12,295 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:12,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124999816] [2021-03-11 14:35:12,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:12,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585503702] [2021-03-11 14:35:12,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:12,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:12,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:12,315 INFO L87 Difference]: Start difference. First operand 185 states and 540 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,380 INFO L93 Difference]: Finished difference Result 295 states and 729 transitions. [2021-03-11 14:35:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:12,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,381 INFO L225 Difference]: With dead ends: 295 [2021-03-11 14:35:12,381 INFO L226 Difference]: Without dead ends: 281 [2021-03-11 14:35:12,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-03-11 14:35:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 189. [2021-03-11 14:35:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.925531914893617) internal successors, (550), 188 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 550 transitions. [2021-03-11 14:35:12,384 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 550 transitions. Word has length 19 [2021-03-11 14:35:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,384 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 550 transitions. [2021-03-11 14:35:12,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 550 transitions. [2021-03-11 14:35:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:12,384 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,384 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-03-11 14:35:12,384 INFO L428 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1455814992, now seen corresponding path program 350 times [2021-03-11 14:35:12,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123881258] [2021-03-11 14:35:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:12,405 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,425 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:12,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:12,451 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:12,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:12,475 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:12,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123881258] [2021-03-11 14:35:12,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:12,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472307505] [2021-03-11 14:35:12,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:12,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:12,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:12,499 INFO L87 Difference]: Start difference. First operand 189 states and 550 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,557 INFO L93 Difference]: Finished difference Result 291 states and 718 transitions. [2021-03-11 14:35:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:12,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,558 INFO L225 Difference]: With dead ends: 291 [2021-03-11 14:35:12,558 INFO L226 Difference]: Without dead ends: 279 [2021-03-11 14:35:12,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-03-11 14:35:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 187. [2021-03-11 14:35:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9301075268817205) internal successors, (545), 186 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 545 transitions. [2021-03-11 14:35:12,561 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 545 transitions. Word has length 19 [2021-03-11 14:35:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,562 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 545 transitions. [2021-03-11 14:35:12,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 545 transitions. [2021-03-11 14:35:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:12,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-03-11 14:35:12,562 INFO L428 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,562 INFO L82 PathProgramCache]: Analyzing trace with hash 645937094, now seen corresponding path program 351 times [2021-03-11 14:35:12,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867934742] [2021-03-11 14:35:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:12,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,603 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:12,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:12,618 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:12,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:12,639 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:12,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867934742] [2021-03-11 14:35:12,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:12,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295941943] [2021-03-11 14:35:12,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:12,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:12,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:12,659 INFO L87 Difference]: Start difference. First operand 187 states and 545 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,723 INFO L93 Difference]: Finished difference Result 296 states and 729 transitions. [2021-03-11 14:35:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:12,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,724 INFO L225 Difference]: With dead ends: 296 [2021-03-11 14:35:12,724 INFO L226 Difference]: Without dead ends: 282 [2021-03-11 14:35:12,724 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-11 14:35:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 192. [2021-03-11 14:35:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2021-03-11 14:35:12,727 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 19 [2021-03-11 14:35:12,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,727 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2021-03-11 14:35:12,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,727 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2021-03-11 14:35:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:12,727 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,727 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-03-11 14:35:12,727 INFO L428 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,728 INFO L82 PathProgramCache]: Analyzing trace with hash 3880176, now seen corresponding path program 352 times [2021-03-11 14:35:12,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246075266] [2021-03-11 14:35:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:12,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,762 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:12,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:12,777 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:12,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:12,797 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:12,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246075266] [2021-03-11 14:35:12,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:12,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060968004] [2021-03-11 14:35:12,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:12,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:12,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:12,817 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,884 INFO L93 Difference]: Finished difference Result 295 states and 722 transitions. [2021-03-11 14:35:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:12,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,885 INFO L225 Difference]: With dead ends: 295 [2021-03-11 14:35:12,885 INFO L226 Difference]: Without dead ends: 277 [2021-03-11 14:35:12,885 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-03-11 14:35:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 187. [2021-03-11 14:35:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9193548387096775) internal successors, (543), 186 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 543 transitions. [2021-03-11 14:35:12,888 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 543 transitions. Word has length 19 [2021-03-11 14:35:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,888 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 543 transitions. [2021-03-11 14:35:12,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 543 transitions. [2021-03-11 14:35:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:12,888 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,888 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-03-11 14:35:12,888 INFO L428 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,889 INFO L82 PathProgramCache]: Analyzing trace with hash -380103836, now seen corresponding path program 353 times [2021-03-11 14:35:12,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092151812] [2021-03-11 14:35:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:12,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,925 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:12,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:12,950 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:12,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:12,970 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:12,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092151812] [2021-03-11 14:35:12,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:12,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185169829] [2021-03-11 14:35:12,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:12,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:12,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:12,990 INFO L87 Difference]: Start difference. First operand 187 states and 543 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,036 INFO L93 Difference]: Finished difference Result 285 states and 699 transitions. [2021-03-11 14:35:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:13,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:13,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,037 INFO L225 Difference]: With dead ends: 285 [2021-03-11 14:35:13,037 INFO L226 Difference]: Without dead ends: 275 [2021-03-11 14:35:13,038 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-03-11 14:35:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 189. [2021-03-11 14:35:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.904255319148936) internal successors, (546), 188 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 546 transitions. [2021-03-11 14:35:13,040 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 546 transitions. Word has length 19 [2021-03-11 14:35:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,040 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 546 transitions. [2021-03-11 14:35:13,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 546 transitions. [2021-03-11 14:35:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:13,040 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,040 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-03-11 14:35:13,041 INFO L428 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1109301160, now seen corresponding path program 354 times [2021-03-11 14:35:13,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820017050] [2021-03-11 14:35:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:13,057 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:13,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:13,075 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:13,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:13,100 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:13,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:13,119 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:13,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820017050] [2021-03-11 14:35:13,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:13,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289882576] [2021-03-11 14:35:13,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:13,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:13,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:13,139 INFO L87 Difference]: Start difference. First operand 189 states and 546 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,207 INFO L93 Difference]: Finished difference Result 283 states and 694 transitions. [2021-03-11 14:35:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:13,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,208 INFO L225 Difference]: With dead ends: 283 [2021-03-11 14:35:13,208 INFO L226 Difference]: Without dead ends: 266 [2021-03-11 14:35:13,208 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-03-11 14:35:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 185. [2021-03-11 14:35:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9293478260869565) internal successors, (539), 184 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 539 transitions. [2021-03-11 14:35:13,211 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 539 transitions. Word has length 19 [2021-03-11 14:35:13,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,211 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 539 transitions. [2021-03-11 14:35:13,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,211 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 539 transitions. [2021-03-11 14:35:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:13,211 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,211 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-03-11 14:35:13,212 INFO L428 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1184663342, now seen corresponding path program 355 times [2021-03-11 14:35:13,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486557047] [2021-03-11 14:35:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:13,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,248 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:13,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:13,264 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:13,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:13,283 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:13,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486557047] [2021-03-11 14:35:13,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:13,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649758261] [2021-03-11 14:35:13,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:13,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:13,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:13,303 INFO L87 Difference]: Start difference. First operand 185 states and 539 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,363 INFO L93 Difference]: Finished difference Result 277 states and 681 transitions. [2021-03-11 14:35:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:13,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,364 INFO L225 Difference]: With dead ends: 277 [2021-03-11 14:35:13,364 INFO L226 Difference]: Without dead ends: 267 [2021-03-11 14:35:13,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-03-11 14:35:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 187. [2021-03-11 14:35:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9193548387096775) internal successors, (543), 186 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 543 transitions. [2021-03-11 14:35:13,367 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 543 transitions. Word has length 19 [2021-03-11 14:35:13,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,367 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 543 transitions. [2021-03-11 14:35:13,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 543 transitions. [2021-03-11 14:35:13,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:13,367 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,367 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-03-11 14:35:13,367 INFO L428 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1424305680, now seen corresponding path program 356 times [2021-03-11 14:35:13,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256354956] [2021-03-11 14:35:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:13,389 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,400 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:13,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:13,416 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:13,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:13,436 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:13,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256354956] [2021-03-11 14:35:13,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:13,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170020881] [2021-03-11 14:35:13,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:13,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:13,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:13,456 INFO L87 Difference]: Start difference. First operand 187 states and 543 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,502 INFO L93 Difference]: Finished difference Result 277 states and 680 transitions. [2021-03-11 14:35:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:13,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:13,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,503 INFO L225 Difference]: With dead ends: 277 [2021-03-11 14:35:13,503 INFO L226 Difference]: Without dead ends: 266 [2021-03-11 14:35:13,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-03-11 14:35:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 186. [2021-03-11 14:35:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.924324324324324) internal successors, (541), 185 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 541 transitions. [2021-03-11 14:35:13,505 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 541 transitions. Word has length 19 [2021-03-11 14:35:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,505 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 541 transitions. [2021-03-11 14:35:13,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 541 transitions. [2021-03-11 14:35:13,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:13,505 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,505 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-03-11 14:35:13,506 INFO L428 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,506 INFO L82 PathProgramCache]: Analyzing trace with hash 2037218574, now seen corresponding path program 357 times [2021-03-11 14:35:13,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936691787] [2021-03-11 14:35:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:13,531 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:13,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:13,557 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:13,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:13,577 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:13,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936691787] [2021-03-11 14:35:13,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:13,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246375874] [2021-03-11 14:35:13,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:13,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:13,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:13,596 INFO L87 Difference]: Start difference. First operand 186 states and 541 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,655 INFO L93 Difference]: Finished difference Result 274 states and 675 transitions. [2021-03-11 14:35:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:13,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,656 INFO L225 Difference]: With dead ends: 274 [2021-03-11 14:35:13,656 INFO L226 Difference]: Without dead ends: 264 [2021-03-11 14:35:13,656 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-03-11 14:35:13,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 188. [2021-03-11 14:35:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.909090909090909) internal successors, (544), 187 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 544 transitions. [2021-03-11 14:35:13,659 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 544 transitions. Word has length 19 [2021-03-11 14:35:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,659 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 544 transitions. [2021-03-11 14:35:13,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 544 transitions. [2021-03-11 14:35:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:13,659 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,659 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-03-11 14:35:13,659 INFO L428 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1302769718, now seen corresponding path program 358 times [2021-03-11 14:35:13,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832621475] [2021-03-11 14:35:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:13,676 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:13,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:13,701 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:13,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:13,720 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:13,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832621475] [2021-03-11 14:35:13,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:13,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607076682] [2021-03-11 14:35:13,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:13,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:13,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:13,739 INFO L87 Difference]: Start difference. First operand 188 states and 544 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,801 INFO L93 Difference]: Finished difference Result 277 states and 680 transitions. [2021-03-11 14:35:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:13,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,801 INFO L225 Difference]: With dead ends: 277 [2021-03-11 14:35:13,801 INFO L226 Difference]: Without dead ends: 262 [2021-03-11 14:35:13,801 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-03-11 14:35:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 186. [2021-03-11 14:35:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.918918918918919) internal successors, (540), 185 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 540 transitions. [2021-03-11 14:35:13,804 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 540 transitions. Word has length 19 [2021-03-11 14:35:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,804 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 540 transitions. [2021-03-11 14:35:13,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 540 transitions. [2021-03-11 14:35:13,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:13,804 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,804 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-03-11 14:35:13,804 INFO L428 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,805 INFO L82 PathProgramCache]: Analyzing trace with hash -886450102, now seen corresponding path program 359 times [2021-03-11 14:35:13,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657120156] [2021-03-11 14:35:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:13,821 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,832 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:13,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:13,856 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:13,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:13,876 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:13,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657120156] [2021-03-11 14:35:13,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:13,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305030718] [2021-03-11 14:35:13,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:13,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:13,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:13,896 INFO L87 Difference]: Start difference. First operand 186 states and 540 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,944 INFO L93 Difference]: Finished difference Result 272 states and 669 transitions. [2021-03-11 14:35:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:13,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,945 INFO L225 Difference]: With dead ends: 272 [2021-03-11 14:35:13,945 INFO L226 Difference]: Without dead ends: 262 [2021-03-11 14:35:13,945 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-03-11 14:35:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 188. [2021-03-11 14:35:13,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9037433155080214) internal successors, (543), 187 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 543 transitions. [2021-03-11 14:35:13,948 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 543 transitions. Word has length 19 [2021-03-11 14:35:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,948 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 543 transitions. [2021-03-11 14:35:13,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 543 transitions. [2021-03-11 14:35:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:13,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,949 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-03-11 14:35:13,949 INFO L428 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,949 INFO L82 PathProgramCache]: Analyzing trace with hash 602954894, now seen corresponding path program 360 times [2021-03-11 14:35:13,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583304153] [2021-03-11 14:35:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:13,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,976 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:13,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:14,000 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:14,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:14,020 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:14,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583304153] [2021-03-11 14:35:14,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:14,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431449881] [2021-03-11 14:35:14,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:14,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:14,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:14,040 INFO L87 Difference]: Start difference. First operand 188 states and 543 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,110 INFO L93 Difference]: Finished difference Result 270 states and 664 transitions. [2021-03-11 14:35:14,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:14,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,111 INFO L225 Difference]: With dead ends: 270 [2021-03-11 14:35:14,111 INFO L226 Difference]: Without dead ends: 249 [2021-03-11 14:35:14,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-03-11 14:35:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 180. [2021-03-11 14:35:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9608938547486034) internal successors, (530), 179 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 530 transitions. [2021-03-11 14:35:14,114 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 530 transitions. Word has length 19 [2021-03-11 14:35:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,114 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 530 transitions. [2021-03-11 14:35:14,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 530 transitions. [2021-03-11 14:35:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:14,114 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,114 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-03-11 14:35:14,114 INFO L428 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,115 INFO L82 PathProgramCache]: Analyzing trace with hash 234329704, now seen corresponding path program 361 times [2021-03-11 14:35:14,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392669731] [2021-03-11 14:35:14,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,157 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:14,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:14,172 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:14,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:14,193 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:14,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392669731] [2021-03-11 14:35:14,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:14,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339542176] [2021-03-11 14:35:14,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:14,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:14,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:14,212 INFO L87 Difference]: Start difference. First operand 180 states and 530 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,262 INFO L93 Difference]: Finished difference Result 319 states and 780 transitions. [2021-03-11 14:35:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:14,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,262 INFO L225 Difference]: With dead ends: 319 [2021-03-11 14:35:14,262 INFO L226 Difference]: Without dead ends: 303 [2021-03-11 14:35:14,263 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-03-11 14:35:14,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 192. [2021-03-11 14:35:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.910994764397906) internal successors, (556), 191 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 556 transitions. [2021-03-11 14:35:14,265 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 556 transitions. Word has length 19 [2021-03-11 14:35:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,265 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 556 transitions. [2021-03-11 14:35:14,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 556 transitions. [2021-03-11 14:35:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:14,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-03-11 14:35:14,266 INFO L428 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,266 INFO L82 PathProgramCache]: Analyzing trace with hash 608980890, now seen corresponding path program 362 times [2021-03-11 14:35:14,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199481535] [2021-03-11 14:35:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,289 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:14,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:14,324 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:14,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:14,350 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:14,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199481535] [2021-03-11 14:35:14,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:14,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036530257] [2021-03-11 14:35:14,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:14,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:14,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:14,370 INFO L87 Difference]: Start difference. First operand 192 states and 556 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,434 INFO L93 Difference]: Finished difference Result 317 states and 770 transitions. [2021-03-11 14:35:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:14,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,435 INFO L225 Difference]: With dead ends: 317 [2021-03-11 14:35:14,435 INFO L226 Difference]: Without dead ends: 295 [2021-03-11 14:35:14,435 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-03-11 14:35:14,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 184. [2021-03-11 14:35:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.939890710382514) internal successors, (538), 183 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 538 transitions. [2021-03-11 14:35:14,438 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 538 transitions. Word has length 19 [2021-03-11 14:35:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,438 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 538 transitions. [2021-03-11 14:35:14,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 538 transitions. [2021-03-11 14:35:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:14,438 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,438 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-03-11 14:35:14,438 INFO L428 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,439 INFO L82 PathProgramCache]: Analyzing trace with hash 438930786, now seen corresponding path program 363 times [2021-03-11 14:35:14,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129229049] [2021-03-11 14:35:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,462 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,481 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:14,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:14,504 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:14,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:14,525 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:14,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129229049] [2021-03-11 14:35:14,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:14,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464617526] [2021-03-11 14:35:14,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:14,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:14,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:14,544 INFO L87 Difference]: Start difference. First operand 184 states and 538 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,593 INFO L93 Difference]: Finished difference Result 310 states and 753 transitions. [2021-03-11 14:35:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:14,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:14,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,594 INFO L225 Difference]: With dead ends: 310 [2021-03-11 14:35:14,594 INFO L226 Difference]: Without dead ends: 294 [2021-03-11 14:35:14,594 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-03-11 14:35:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 187. [2021-03-11 14:35:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.913978494623656) internal successors, (542), 186 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 542 transitions. [2021-03-11 14:35:14,597 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 542 transitions. Word has length 19 [2021-03-11 14:35:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,597 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 542 transitions. [2021-03-11 14:35:14,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,597 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 542 transitions. [2021-03-11 14:35:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:14,597 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,597 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-03-11 14:35:14,598 INFO L428 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1712795760, now seen corresponding path program 364 times [2021-03-11 14:35:14,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922709923] [2021-03-11 14:35:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,608 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,621 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,641 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:14,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:14,664 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:14,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:14,684 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:14,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922709923] [2021-03-11 14:35:14,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:14,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902227567] [2021-03-11 14:35:14,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:14,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:14,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:14,703 INFO L87 Difference]: Start difference. First operand 187 states and 542 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,763 INFO L93 Difference]: Finished difference Result 304 states and 738 transitions. [2021-03-11 14:35:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:14,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,764 INFO L225 Difference]: With dead ends: 304 [2021-03-11 14:35:14,764 INFO L226 Difference]: Without dead ends: 291 [2021-03-11 14:35:14,764 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-03-11 14:35:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 184. [2021-03-11 14:35:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9234972677595628) internal successors, (535), 183 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 535 transitions. [2021-03-11 14:35:14,767 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 535 transitions. Word has length 19 [2021-03-11 14:35:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,767 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 535 transitions. [2021-03-11 14:35:14,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 535 transitions. [2021-03-11 14:35:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:14,767 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,767 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-03-11 14:35:14,767 INFO L428 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,767 INFO L82 PathProgramCache]: Analyzing trace with hash -959085248, now seen corresponding path program 365 times [2021-03-11 14:35:14,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983162957] [2021-03-11 14:35:14,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,810 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:14,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:14,836 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:14,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:14,856 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:14,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983162957] [2021-03-11 14:35:14,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:14,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710487342] [2021-03-11 14:35:14,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:14,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:14,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:14,875 INFO L87 Difference]: Start difference. First operand 184 states and 535 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,938 INFO L93 Difference]: Finished difference Result 305 states and 742 transitions. [2021-03-11 14:35:14,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:14,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:14,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,939 INFO L225 Difference]: With dead ends: 305 [2021-03-11 14:35:14,939 INFO L226 Difference]: Without dead ends: 291 [2021-03-11 14:35:14,939 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-03-11 14:35:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 186. [2021-03-11 14:35:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.908108108108108) internal successors, (538), 185 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 538 transitions. [2021-03-11 14:35:14,942 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 538 transitions. Word has length 19 [2021-03-11 14:35:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,942 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 538 transitions. [2021-03-11 14:35:14,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 538 transitions. [2021-03-11 14:35:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:14,942 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,942 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-03-11 14:35:14,942 INFO L428 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1833420574, now seen corresponding path program 366 times [2021-03-11 14:35:14,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830371382] [2021-03-11 14:35:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,966 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:14,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:15,011 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:15,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:15,031 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:15,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830371382] [2021-03-11 14:35:15,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:15,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891706259] [2021-03-11 14:35:15,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:15,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:15,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:15,051 INFO L87 Difference]: Start difference. First operand 186 states and 538 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,112 INFO L93 Difference]: Finished difference Result 301 states and 731 transitions. [2021-03-11 14:35:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:15,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:15,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,113 INFO L225 Difference]: With dead ends: 301 [2021-03-11 14:35:15,113 INFO L226 Difference]: Without dead ends: 285 [2021-03-11 14:35:15,113 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-03-11 14:35:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 180. [2021-03-11 14:35:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9441340782122905) internal successors, (527), 179 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 527 transitions. [2021-03-11 14:35:15,115 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 527 transitions. Word has length 19 [2021-03-11 14:35:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,115 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 527 transitions. [2021-03-11 14:35:15,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 527 transitions. [2021-03-11 14:35:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:15,116 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,116 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-03-11 14:35:15,116 INFO L428 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,116 INFO L82 PathProgramCache]: Analyzing trace with hash -188156022, now seen corresponding path program 367 times [2021-03-11 14:35:15,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556305980] [2021-03-11 14:35:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,140 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:15,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:15,157 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:15,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:15,172 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:15,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:15,192 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:15,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556305980] [2021-03-11 14:35:15,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:15,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36279843] [2021-03-11 14:35:15,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:15,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:15,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:15,212 INFO L87 Difference]: Start difference. First operand 180 states and 527 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,258 INFO L93 Difference]: Finished difference Result 319 states and 777 transitions. [2021-03-11 14:35:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,259 INFO L225 Difference]: With dead ends: 319 [2021-03-11 14:35:15,259 INFO L226 Difference]: Without dead ends: 303 [2021-03-11 14:35:15,259 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-03-11 14:35:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 192. [2021-03-11 14:35:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.8952879581151834) internal successors, (553), 191 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 553 transitions. [2021-03-11 14:35:15,262 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 553 transitions. Word has length 19 [2021-03-11 14:35:15,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,262 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 553 transitions. [2021-03-11 14:35:15,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 553 transitions. [2021-03-11 14:35:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:15,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,262 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-03-11 14:35:15,263 INFO L428 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,263 INFO L82 PathProgramCache]: Analyzing trace with hash 186495164, now seen corresponding path program 368 times [2021-03-11 14:35:15,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296015720] [2021-03-11 14:35:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,289 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:15,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:15,306 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:15,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:15,321 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:15,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:15,340 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:15,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296015720] [2021-03-11 14:35:15,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:15,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724954596] [2021-03-11 14:35:15,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:15,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:15,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:15,359 INFO L87 Difference]: Start difference. First operand 192 states and 553 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,417 INFO L93 Difference]: Finished difference Result 317 states and 767 transitions. [2021-03-11 14:35:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:15,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,418 INFO L225 Difference]: With dead ends: 317 [2021-03-11 14:35:15,418 INFO L226 Difference]: Without dead ends: 295 [2021-03-11 14:35:15,418 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-03-11 14:35:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 184. [2021-03-11 14:35:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9234972677595628) internal successors, (535), 183 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 535 transitions. [2021-03-11 14:35:15,421 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 535 transitions. Word has length 19 [2021-03-11 14:35:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,421 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 535 transitions. [2021-03-11 14:35:15,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,422 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 535 transitions. [2021-03-11 14:35:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:15,422 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,422 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-03-11 14:35:15,422 INFO L428 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,422 INFO L82 PathProgramCache]: Analyzing trace with hash 342041284, now seen corresponding path program 369 times [2021-03-11 14:35:15,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014711935] [2021-03-11 14:35:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,433 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,459 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:15,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:15,480 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:15,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:15,508 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:15,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:15,534 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:15,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014711935] [2021-03-11 14:35:15,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:15,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652933819] [2021-03-11 14:35:15,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:15,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:15,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:15,560 INFO L87 Difference]: Start difference. First operand 184 states and 535 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,618 INFO L93 Difference]: Finished difference Result 310 states and 750 transitions. [2021-03-11 14:35:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:15,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,619 INFO L225 Difference]: With dead ends: 310 [2021-03-11 14:35:15,619 INFO L226 Difference]: Without dead ends: 294 [2021-03-11 14:35:15,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 133.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-03-11 14:35:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 187. [2021-03-11 14:35:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.8978494623655915) internal successors, (539), 186 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 539 transitions. [2021-03-11 14:35:15,623 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 539 transitions. Word has length 19 [2021-03-11 14:35:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,623 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 539 transitions. [2021-03-11 14:35:15,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 539 transitions. [2021-03-11 14:35:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:15,623 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,623 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-03-11 14:35:15,624 INFO L428 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,624 INFO L82 PathProgramCache]: Analyzing trace with hash 601099510, now seen corresponding path program 370 times [2021-03-11 14:35:15,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389216224] [2021-03-11 14:35:15,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,638 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,652 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:15,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:15,668 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:15,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:15,690 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:15,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:15,710 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:15,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389216224] [2021-03-11 14:35:15,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:15,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268873617] [2021-03-11 14:35:15,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:15,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:15,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:15,730 INFO L87 Difference]: Start difference. First operand 187 states and 539 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,776 INFO L93 Difference]: Finished difference Result 304 states and 735 transitions. [2021-03-11 14:35:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:15,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,776 INFO L225 Difference]: With dead ends: 304 [2021-03-11 14:35:15,776 INFO L226 Difference]: Without dead ends: 291 [2021-03-11 14:35:15,777 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-03-11 14:35:15,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 184. [2021-03-11 14:35:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.907103825136612) internal successors, (532), 183 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 532 transitions. [2021-03-11 14:35:15,779 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 532 transitions. Word has length 19 [2021-03-11 14:35:15,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,779 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 532 transitions. [2021-03-11 14:35:15,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 532 transitions. [2021-03-11 14:35:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:15,779 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,779 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-03-11 14:35:15,779 INFO L428 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2030620292, now seen corresponding path program 371 times [2021-03-11 14:35:15,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589385047] [2021-03-11 14:35:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,789 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,803 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:15,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:15,819 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:15,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:15,841 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:15,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:15,861 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:15,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589385047] [2021-03-11 14:35:15,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:15,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567937340] [2021-03-11 14:35:15,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:15,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:15,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:15,881 INFO L87 Difference]: Start difference. First operand 184 states and 532 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,943 INFO L93 Difference]: Finished difference Result 305 states and 739 transitions. [2021-03-11 14:35:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:15,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:15,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,943 INFO L225 Difference]: With dead ends: 305 [2021-03-11 14:35:15,943 INFO L226 Difference]: Without dead ends: 291 [2021-03-11 14:35:15,944 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-03-11 14:35:15,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 186. [2021-03-11 14:35:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.891891891891892) internal successors, (535), 185 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 535 transitions. [2021-03-11 14:35:15,946 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 535 transitions. Word has length 19 [2021-03-11 14:35:15,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,946 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 535 transitions. [2021-03-11 14:35:15,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,946 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 535 transitions. [2021-03-11 14:35:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:15,946 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,946 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-03-11 14:35:15,946 INFO L428 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,947 INFO L82 PathProgramCache]: Analyzing trace with hash -910490462, now seen corresponding path program 372 times [2021-03-11 14:35:15,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850519152] [2021-03-11 14:35:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,957 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:15,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:15,987 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:15,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:16,010 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:16,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:16,030 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:16,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850519152] [2021-03-11 14:35:16,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:16,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698420070] [2021-03-11 14:35:16,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:16,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:16,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:16,050 INFO L87 Difference]: Start difference. First operand 186 states and 535 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,103 INFO L93 Difference]: Finished difference Result 301 states and 728 transitions. [2021-03-11 14:35:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:16,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:16,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,104 INFO L225 Difference]: With dead ends: 301 [2021-03-11 14:35:16,104 INFO L226 Difference]: Without dead ends: 285 [2021-03-11 14:35:16,104 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-03-11 14:35:16,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 180. [2021-03-11 14:35:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9273743016759775) internal successors, (524), 179 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 524 transitions. [2021-03-11 14:35:16,106 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 524 transitions. Word has length 19 [2021-03-11 14:35:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,106 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 524 transitions. [2021-03-11 14:35:16,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 524 transitions. [2021-03-11 14:35:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:16,106 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,106 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-03-11 14:35:16,107 INFO L428 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash -304821912, now seen corresponding path program 373 times [2021-03-11 14:35:16,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254319091] [2021-03-11 14:35:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,131 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:16,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:16,148 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:16,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:16,171 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:16,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:16,196 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:16,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254319091] [2021-03-11 14:35:16,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:16,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617974186] [2021-03-11 14:35:16,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:16,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:16,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:16,221 INFO L87 Difference]: Start difference. First operand 180 states and 524 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,285 INFO L93 Difference]: Finished difference Result 298 states and 719 transitions. [2021-03-11 14:35:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:16,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,286 INFO L225 Difference]: With dead ends: 298 [2021-03-11 14:35:16,286 INFO L226 Difference]: Without dead ends: 282 [2021-03-11 14:35:16,286 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-11 14:35:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 185. [2021-03-11 14:35:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.902173913043478) internal successors, (534), 184 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 534 transitions. [2021-03-11 14:35:16,289 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 534 transitions. Word has length 19 [2021-03-11 14:35:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,289 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 534 transitions. [2021-03-11 14:35:16,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 534 transitions. [2021-03-11 14:35:16,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:16,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-03-11 14:35:16,290 INFO L428 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1838418838, now seen corresponding path program 374 times [2021-03-11 14:35:16,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666802806] [2021-03-11 14:35:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,317 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:16,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:16,334 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:16,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:16,357 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:16,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:16,377 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:16,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666802806] [2021-03-11 14:35:16,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:16,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518756339] [2021-03-11 14:35:16,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:16,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:16,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:16,396 INFO L87 Difference]: Start difference. First operand 185 states and 534 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,458 INFO L93 Difference]: Finished difference Result 292 states and 704 transitions. [2021-03-11 14:35:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:16,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,459 INFO L225 Difference]: With dead ends: 292 [2021-03-11 14:35:16,459 INFO L226 Difference]: Without dead ends: 279 [2021-03-11 14:35:16,459 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-03-11 14:35:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 182. [2021-03-11 14:35:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9171270718232045) internal successors, (528), 181 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 528 transitions. [2021-03-11 14:35:16,461 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 528 transitions. Word has length 19 [2021-03-11 14:35:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,461 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 528 transitions. [2021-03-11 14:35:16,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 528 transitions. [2021-03-11 14:35:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:16,462 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,462 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-03-11 14:35:16,462 INFO L428 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1905259766, now seen corresponding path program 375 times [2021-03-11 14:35:16,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396931109] [2021-03-11 14:35:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,486 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:16,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:16,503 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:16,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:16,528 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:16,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:16,548 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:16,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396931109] [2021-03-11 14:35:16,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:16,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073419420] [2021-03-11 14:35:16,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:16,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:16,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:16,568 INFO L87 Difference]: Start difference. First operand 182 states and 528 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,617 INFO L93 Difference]: Finished difference Result 298 states and 717 transitions. [2021-03-11 14:35:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:16,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,618 INFO L225 Difference]: With dead ends: 298 [2021-03-11 14:35:16,618 INFO L226 Difference]: Without dead ends: 282 [2021-03-11 14:35:16,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-11 14:35:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 185. [2021-03-11 14:35:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.891304347826087) internal successors, (532), 184 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 532 transitions. [2021-03-11 14:35:16,621 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 532 transitions. Word has length 19 [2021-03-11 14:35:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,621 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 532 transitions. [2021-03-11 14:35:16,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 532 transitions. [2021-03-11 14:35:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:16,621 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,621 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-03-11 14:35:16,621 INFO L428 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1646201540, now seen corresponding path program 376 times [2021-03-11 14:35:16,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005368405] [2021-03-11 14:35:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,631 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,645 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:16,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:16,661 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:16,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:16,684 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:16,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:16,704 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:16,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005368405] [2021-03-11 14:35:16,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:16,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660752108] [2021-03-11 14:35:16,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:16,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:16,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:16,723 INFO L87 Difference]: Start difference. First operand 185 states and 532 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,772 INFO L93 Difference]: Finished difference Result 292 states and 702 transitions. [2021-03-11 14:35:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:16,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,773 INFO L225 Difference]: With dead ends: 292 [2021-03-11 14:35:16,773 INFO L226 Difference]: Without dead ends: 279 [2021-03-11 14:35:16,773 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-03-11 14:35:16,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 182. [2021-03-11 14:35:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9060773480662982) internal successors, (526), 181 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 526 transitions. [2021-03-11 14:35:16,775 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 526 transitions. Word has length 19 [2021-03-11 14:35:16,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,775 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 526 transitions. [2021-03-11 14:35:16,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 526 transitions. [2021-03-11 14:35:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:16,776 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,776 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-03-11 14:35:16,776 INFO L428 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1408327434, now seen corresponding path program 377 times [2021-03-11 14:35:16,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222222816] [2021-03-11 14:35:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,786 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,800 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:16,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:16,816 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:16,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:16,832 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:16,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:16,851 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:16,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222222816] [2021-03-11 14:35:16,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:16,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723747246] [2021-03-11 14:35:16,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:16,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:16,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:16,871 INFO L87 Difference]: Start difference. First operand 182 states and 526 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,935 INFO L93 Difference]: Finished difference Result 284 states and 686 transitions. [2021-03-11 14:35:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,936 INFO L225 Difference]: With dead ends: 284 [2021-03-11 14:35:16,936 INFO L226 Difference]: Without dead ends: 274 [2021-03-11 14:35:16,936 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-03-11 14:35:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 183. [2021-03-11 14:35:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.8956043956043955) internal successors, (527), 182 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 527 transitions. [2021-03-11 14:35:16,939 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 527 transitions. Word has length 19 [2021-03-11 14:35:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,939 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 527 transitions. [2021-03-11 14:35:16,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,939 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 527 transitions. [2021-03-11 14:35:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:16,939 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,939 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-03-11 14:35:16,939 INFO L428 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1168685096, now seen corresponding path program 378 times [2021-03-11 14:35:16,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862522380] [2021-03-11 14:35:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,949 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,963 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:16,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:16,980 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:16,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:16,995 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:16,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:17,016 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:17,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862522380] [2021-03-11 14:35:17,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:17,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888664962] [2021-03-11 14:35:17,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:17,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:17,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:17,035 INFO L87 Difference]: Start difference. First operand 183 states and 527 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,087 INFO L93 Difference]: Finished difference Result 284 states and 685 transitions. [2021-03-11 14:35:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:17,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,088 INFO L225 Difference]: With dead ends: 284 [2021-03-11 14:35:17,088 INFO L226 Difference]: Without dead ends: 271 [2021-03-11 14:35:17,088 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-03-11 14:35:17,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 180. [2021-03-11 14:35:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.916201117318436) internal successors, (522), 179 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 522 transitions. [2021-03-11 14:35:17,092 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 522 transitions. Word has length 19 [2021-03-11 14:35:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,092 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 522 transitions. [2021-03-11 14:35:17,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 522 transitions. [2021-03-11 14:35:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:17,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-03-11 14:35:17,092 INFO L428 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1264971302, now seen corresponding path program 379 times [2021-03-11 14:35:17,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11021694] [2021-03-11 14:35:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,118 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:17,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:17,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:17,165 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:17,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:17,184 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:17,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11021694] [2021-03-11 14:35:17,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:17,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537242800] [2021-03-11 14:35:17,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:17,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:17,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:17,204 INFO L87 Difference]: Start difference. First operand 180 states and 522 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,266 INFO L93 Difference]: Finished difference Result 288 states and 699 transitions. [2021-03-11 14:35:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:17,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:17,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,266 INFO L225 Difference]: With dead ends: 288 [2021-03-11 14:35:17,266 INFO L226 Difference]: Without dead ends: 274 [2021-03-11 14:35:17,267 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-03-11 14:35:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 183. [2021-03-11 14:35:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.901098901098901) internal successors, (528), 182 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 528 transitions. [2021-03-11 14:35:17,269 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 528 transitions. Word has length 19 [2021-03-11 14:35:17,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,269 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 528 transitions. [2021-03-11 14:35:17,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 528 transitions. [2021-03-11 14:35:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:17,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-03-11 14:35:17,271 INFO L428 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2139306628, now seen corresponding path program 380 times [2021-03-11 14:35:17,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300493591] [2021-03-11 14:35:17,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,287 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:17,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:17,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:17,346 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:17,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:17,366 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:17,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300493591] [2021-03-11 14:35:17,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:17,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890782315] [2021-03-11 14:35:17,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:17,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:17,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:17,386 INFO L87 Difference]: Start difference. First operand 183 states and 528 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,454 INFO L93 Difference]: Finished difference Result 284 states and 688 transitions. [2021-03-11 14:35:17,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:17,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:17,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,455 INFO L225 Difference]: With dead ends: 284 [2021-03-11 14:35:17,455 INFO L226 Difference]: Without dead ends: 272 [2021-03-11 14:35:17,455 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-03-11 14:35:17,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 181. [2021-03-11 14:35:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.911111111111111) internal successors, (524), 180 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 524 transitions. [2021-03-11 14:35:17,458 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 524 transitions. Word has length 19 [2021-03-11 14:35:17,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,459 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 524 transitions. [2021-03-11 14:35:17,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 524 transitions. [2021-03-11 14:35:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:17,459 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,459 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-03-11 14:35:17,459 INFO L428 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,460 INFO L82 PathProgramCache]: Analyzing trace with hash -103949188, now seen corresponding path program 381 times [2021-03-11 14:35:17,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255031277] [2021-03-11 14:35:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,484 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:17,503 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:17,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:17,525 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:17,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:17,545 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:17,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255031277] [2021-03-11 14:35:17,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:17,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938097301] [2021-03-11 14:35:17,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:17,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:17,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:17,564 INFO L87 Difference]: Start difference. First operand 181 states and 524 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,624 INFO L93 Difference]: Finished difference Result 288 states and 698 transitions. [2021-03-11 14:35:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:17,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,625 INFO L225 Difference]: With dead ends: 288 [2021-03-11 14:35:17,625 INFO L226 Difference]: Without dead ends: 274 [2021-03-11 14:35:17,625 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-03-11 14:35:17,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 183. [2021-03-11 14:35:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.8956043956043955) internal successors, (527), 182 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 527 transitions. [2021-03-11 14:35:17,628 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 527 transitions. Word has length 19 [2021-03-11 14:35:17,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,628 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 527 transitions. [2021-03-11 14:35:17,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,628 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 527 transitions. [2021-03-11 14:35:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:17,629 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,629 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-03-11 14:35:17,629 INFO L428 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1016180642, now seen corresponding path program 382 times [2021-03-11 14:35:17,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955308470] [2021-03-11 14:35:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,639 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:17,672 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:17,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:17,694 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:17,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:17,715 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:17,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955308470] [2021-03-11 14:35:17,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:17,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340432845] [2021-03-11 14:35:17,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:17,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:17,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:17,738 INFO L87 Difference]: Start difference. First operand 183 states and 527 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,788 INFO L93 Difference]: Finished difference Result 284 states and 687 transitions. [2021-03-11 14:35:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:17,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,789 INFO L225 Difference]: With dead ends: 284 [2021-03-11 14:35:17,789 INFO L226 Difference]: Without dead ends: 272 [2021-03-11 14:35:17,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-03-11 14:35:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 181. [2021-03-11 14:35:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.9055555555555554) internal successors, (523), 180 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 523 transitions. [2021-03-11 14:35:17,791 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 523 transitions. Word has length 19 [2021-03-11 14:35:17,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,791 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 523 transitions. [2021-03-11 14:35:17,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,791 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 523 transitions. [2021-03-11 14:35:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:17,792 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,792 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-03-11 14:35:17,792 INFO L428 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1793678558, now seen corresponding path program 383 times [2021-03-11 14:35:17,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234369005] [2021-03-11 14:35:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,802 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:17,835 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:17,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:17,850 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:17,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:17,870 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:17,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234369005] [2021-03-11 14:35:17,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:17,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424229231] [2021-03-11 14:35:17,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:17,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:17,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:17,890 INFO L87 Difference]: Start difference. First operand 181 states and 523 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,954 INFO L93 Difference]: Finished difference Result 279 states and 676 transitions. [2021-03-11 14:35:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:17,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:17,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,954 INFO L225 Difference]: With dead ends: 279 [2021-03-11 14:35:17,954 INFO L226 Difference]: Without dead ends: 269 [2021-03-11 14:35:17,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-03-11 14:35:17,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 182. [2021-03-11 14:35:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.8950276243093924) internal successors, (524), 181 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 524 transitions. [2021-03-11 14:35:17,957 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 524 transitions. Word has length 19 [2021-03-11 14:35:17,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,957 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 524 transitions. [2021-03-11 14:35:17,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 524 transitions. [2021-03-11 14:35:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:17,957 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,957 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-03-11 14:35:17,957 INFO L428 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1554036220, now seen corresponding path program 384 times [2021-03-11 14:35:17,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462606054] [2021-03-11 14:35:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,967 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,003 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:18,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:18,032 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:18,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:18,052 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:18,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462606054] [2021-03-11 14:35:18,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:18,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392995422] [2021-03-11 14:35:18,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:18,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:18,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:18,072 INFO L87 Difference]: Start difference. First operand 182 states and 524 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,120 INFO L93 Difference]: Finished difference Result 279 states and 675 transitions. [2021-03-11 14:35:18,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:18,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:18,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,120 INFO L225 Difference]: With dead ends: 279 [2021-03-11 14:35:18,120 INFO L226 Difference]: Without dead ends: 264 [2021-03-11 14:35:18,120 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-03-11 14:35:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 177. [2021-03-11 14:35:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.9318181818181817) internal successors, (516), 176 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 516 transitions. [2021-03-11 14:35:18,123 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 516 transitions. Word has length 19 [2021-03-11 14:35:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,123 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 516 transitions. [2021-03-11 14:35:18,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 516 transitions. [2021-03-11 14:35:18,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:18,123 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,123 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-03-11 14:35:18,123 INFO L428 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,123 INFO L82 PathProgramCache]: Analyzing trace with hash 22174086, now seen corresponding path program 385 times [2021-03-11 14:35:18,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708300520] [2021-03-11 14:35:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:18,140 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,160 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:18,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:18,175 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:18,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:18,195 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:18,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708300520] [2021-03-11 14:35:18,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:18,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286561071] [2021-03-11 14:35:18,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:18,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:18,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:18,215 INFO L87 Difference]: Start difference. First operand 177 states and 516 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,262 INFO L93 Difference]: Finished difference Result 321 states and 784 transitions. [2021-03-11 14:35:18,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:18,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,263 INFO L225 Difference]: With dead ends: 321 [2021-03-11 14:35:18,263 INFO L226 Difference]: Without dead ends: 305 [2021-03-11 14:35:18,263 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-03-11 14:35:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 185. [2021-03-11 14:35:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.880434782608696) internal successors, (530), 184 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 530 transitions. [2021-03-11 14:35:18,266 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 530 transitions. Word has length 19 [2021-03-11 14:35:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,266 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 530 transitions. [2021-03-11 14:35:18,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 530 transitions. [2021-03-11 14:35:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:18,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-03-11 14:35:18,266 INFO L428 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash 396825272, now seen corresponding path program 386 times [2021-03-11 14:35:18,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922887773] [2021-03-11 14:35:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:18,287 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:18,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:18,327 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:18,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:18,348 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:18,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922887773] [2021-03-11 14:35:18,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:18,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888513429] [2021-03-11 14:35:18,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:18,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:18,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:18,368 INFO L87 Difference]: Start difference. First operand 185 states and 530 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,426 INFO L93 Difference]: Finished difference Result 319 states and 774 transitions. [2021-03-11 14:35:18,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:18,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:18,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,427 INFO L225 Difference]: With dead ends: 319 [2021-03-11 14:35:18,427 INFO L226 Difference]: Without dead ends: 297 [2021-03-11 14:35:18,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-03-11 14:35:18,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 177. [2021-03-11 14:35:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.909090909090909) internal successors, (512), 176 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 512 transitions. [2021-03-11 14:35:18,429 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 512 transitions. Word has length 19 [2021-03-11 14:35:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,429 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 512 transitions. [2021-03-11 14:35:18,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 512 transitions. [2021-03-11 14:35:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:18,429 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,429 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-03-11 14:35:18,430 INFO L428 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,430 INFO L82 PathProgramCache]: Analyzing trace with hash 226775168, now seen corresponding path program 387 times [2021-03-11 14:35:18,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662852911] [2021-03-11 14:35:18,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:18,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:18,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:18,489 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:18,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:18,509 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:18,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662852911] [2021-03-11 14:35:18,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:18,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999476046] [2021-03-11 14:35:18,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:18,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:18,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:18,528 INFO L87 Difference]: Start difference. First operand 177 states and 512 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,572 INFO L93 Difference]: Finished difference Result 312 states and 757 transitions. [2021-03-11 14:35:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:18,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:18,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,573 INFO L225 Difference]: With dead ends: 312 [2021-03-11 14:35:18,573 INFO L226 Difference]: Without dead ends: 296 [2021-03-11 14:35:18,573 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-03-11 14:35:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 180. [2021-03-11 14:35:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.88268156424581) internal successors, (516), 179 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 516 transitions. [2021-03-11 14:35:18,575 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 516 transitions. Word has length 19 [2021-03-11 14:35:18,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,575 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 516 transitions. [2021-03-11 14:35:18,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,575 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 516 transitions. [2021-03-11 14:35:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:18,576 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,576 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-03-11 14:35:18,576 INFO L428 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1924951378, now seen corresponding path program 388 times [2021-03-11 14:35:18,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895522276] [2021-03-11 14:35:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:18,595 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,614 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:18,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:18,637 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:18,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:18,657 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:18,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895522276] [2021-03-11 14:35:18,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:18,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57609427] [2021-03-11 14:35:18,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:18,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:18,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:18,676 INFO L87 Difference]: Start difference. First operand 180 states and 516 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,740 INFO L93 Difference]: Finished difference Result 306 states and 742 transitions. [2021-03-11 14:35:18,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:18,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:18,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,740 INFO L225 Difference]: With dead ends: 306 [2021-03-11 14:35:18,740 INFO L226 Difference]: Without dead ends: 293 [2021-03-11 14:35:18,741 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-03-11 14:35:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 177. [2021-03-11 14:35:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.8920454545454546) internal successors, (509), 176 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 509 transitions. [2021-03-11 14:35:18,743 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 509 transitions. Word has length 19 [2021-03-11 14:35:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,743 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 509 transitions. [2021-03-11 14:35:18,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 509 transitions. [2021-03-11 14:35:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:18,743 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,743 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-03-11 14:35:18,743 INFO L428 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1171240866, now seen corresponding path program 389 times [2021-03-11 14:35:18,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275835311] [2021-03-11 14:35:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:18,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,779 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:18,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:18,805 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:18,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:18,825 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:18,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275835311] [2021-03-11 14:35:18,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:18,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764251312] [2021-03-11 14:35:18,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:18,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:18,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:18,845 INFO L87 Difference]: Start difference. First operand 177 states and 509 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,906 INFO L93 Difference]: Finished difference Result 307 states and 746 transitions. [2021-03-11 14:35:18,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:18,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,907 INFO L225 Difference]: With dead ends: 307 [2021-03-11 14:35:18,907 INFO L226 Difference]: Without dead ends: 293 [2021-03-11 14:35:18,907 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-03-11 14:35:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 179. [2021-03-11 14:35:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.8764044943820224) internal successors, (512), 178 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 512 transitions. [2021-03-11 14:35:18,909 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 512 transitions. Word has length 19 [2021-03-11 14:35:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,909 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 512 transitions. [2021-03-11 14:35:18,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 512 transitions. [2021-03-11 14:35:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:18,910 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,910 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-03-11 14:35:18,910 INFO L428 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2045576192, now seen corresponding path program 390 times [2021-03-11 14:35:18,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595323581] [2021-03-11 14:35:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:18,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:18,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:18,976 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:18,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:18,995 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:18,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595323581] [2021-03-11 14:35:19,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:19,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005128802] [2021-03-11 14:35:19,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:19,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:19,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:19,015 INFO L87 Difference]: Start difference. First operand 179 states and 512 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,074 INFO L93 Difference]: Finished difference Result 303 states and 735 transitions. [2021-03-11 14:35:19,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:19,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,075 INFO L225 Difference]: With dead ends: 303 [2021-03-11 14:35:19,075 INFO L226 Difference]: Without dead ends: 287 [2021-03-11 14:35:19,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-03-11 14:35:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 173. [2021-03-11 14:35:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.9069767441860463) internal successors, (500), 172 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 500 transitions. [2021-03-11 14:35:19,077 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 500 transitions. Word has length 19 [2021-03-11 14:35:19,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,077 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 500 transitions. [2021-03-11 14:35:19,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 500 transitions. [2021-03-11 14:35:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:19,077 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,077 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-03-11 14:35:19,077 INFO L428 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,078 INFO L82 PathProgramCache]: Analyzing trace with hash -822797366, now seen corresponding path program 391 times [2021-03-11 14:35:19,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937428741] [2021-03-11 14:35:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:19,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,105 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:19,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:19,120 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:19,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:19,140 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:19,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937428741] [2021-03-11 14:35:19,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:19,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168213457] [2021-03-11 14:35:19,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:19,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:19,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:19,160 INFO L87 Difference]: Start difference. First operand 173 states and 500 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,202 INFO L93 Difference]: Finished difference Result 321 states and 787 transitions. [2021-03-11 14:35:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:19,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,203 INFO L225 Difference]: With dead ends: 321 [2021-03-11 14:35:19,203 INFO L226 Difference]: Without dead ends: 305 [2021-03-11 14:35:19,203 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-03-11 14:35:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 187. [2021-03-11 14:35:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.8763440860215055) internal successors, (535), 186 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 535 transitions. [2021-03-11 14:35:19,205 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 535 transitions. Word has length 19 [2021-03-11 14:35:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,205 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 535 transitions. [2021-03-11 14:35:19,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,206 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 535 transitions. [2021-03-11 14:35:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:19,206 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,206 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-03-11 14:35:19,206 INFO L428 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,206 INFO L82 PathProgramCache]: Analyzing trace with hash -448146180, now seen corresponding path program 392 times [2021-03-11 14:35:19,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624916665] [2021-03-11 14:35:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:19,222 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,233 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:19,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:19,248 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:19,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:19,267 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:19,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624916665] [2021-03-11 14:35:19,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:19,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911330817] [2021-03-11 14:35:19,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:19,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:19,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:19,287 INFO L87 Difference]: Start difference. First operand 187 states and 535 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,343 INFO L93 Difference]: Finished difference Result 319 states and 777 transitions. [2021-03-11 14:35:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:19,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,343 INFO L225 Difference]: With dead ends: 319 [2021-03-11 14:35:19,343 INFO L226 Difference]: Without dead ends: 297 [2021-03-11 14:35:19,343 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-03-11 14:35:19,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 179. [2021-03-11 14:35:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.893258426966292) internal successors, (515), 178 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 515 transitions. [2021-03-11 14:35:19,346 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 515 transitions. Word has length 19 [2021-03-11 14:35:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,346 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 515 transitions. [2021-03-11 14:35:19,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 515 transitions. [2021-03-11 14:35:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:19,346 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,346 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-03-11 14:35:19,346 INFO L428 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,347 INFO L82 PathProgramCache]: Analyzing trace with hash 32996164, now seen corresponding path program 393 times [2021-03-11 14:35:19,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145258607] [2021-03-11 14:35:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:19,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,374 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:19,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:19,399 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:19,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:19,420 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:19,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145258607] [2021-03-11 14:35:19,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:19,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487917074] [2021-03-11 14:35:19,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:19,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:19,439 INFO L87 Difference]: Start difference. First operand 179 states and 515 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,482 INFO L93 Difference]: Finished difference Result 308 states and 755 transitions. [2021-03-11 14:35:19,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:19,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:19,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,482 INFO L225 Difference]: With dead ends: 308 [2021-03-11 14:35:19,482 INFO L226 Difference]: Without dead ends: 292 [2021-03-11 14:35:19,483 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-03-11 14:35:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 184. [2021-03-11 14:35:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.8633879781420766) internal successors, (524), 183 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 524 transitions. [2021-03-11 14:35:19,485 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 524 transitions. Word has length 19 [2021-03-11 14:35:19,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,485 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 524 transitions. [2021-03-11 14:35:19,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 524 transitions. [2021-03-11 14:35:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:19,485 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,485 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-03-11 14:35:19,485 INFO L428 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,486 INFO L82 PathProgramCache]: Analyzing trace with hash -718065930, now seen corresponding path program 394 times [2021-03-11 14:35:19,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847165434] [2021-03-11 14:35:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:19,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,513 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:19,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:19,538 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:19,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:19,557 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:19,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847165434] [2021-03-11 14:35:19,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:19,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093426646] [2021-03-11 14:35:19,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:19,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:19,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:19,577 INFO L87 Difference]: Start difference. First operand 184 states and 524 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,639 INFO L93 Difference]: Finished difference Result 295 states and 734 transitions. [2021-03-11 14:35:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:19,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:19,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,640 INFO L225 Difference]: With dead ends: 295 [2021-03-11 14:35:19,640 INFO L226 Difference]: Without dead ends: 278 [2021-03-11 14:35:19,640 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-03-11 14:35:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 179. [2021-03-11 14:35:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.865168539325843) internal successors, (510), 178 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 510 transitions. [2021-03-11 14:35:19,643 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 510 transitions. Word has length 19 [2021-03-11 14:35:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,643 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 510 transitions. [2021-03-11 14:35:19,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 510 transitions. [2021-03-11 14:35:19,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:19,643 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,643 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-03-11 14:35:19,643 INFO L428 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1988186406, now seen corresponding path program 395 times [2021-03-11 14:35:19,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465760426] [2021-03-11 14:35:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:19,660 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,671 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:19,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:19,685 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:19,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:19,705 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:19,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465760426] [2021-03-11 14:35:19,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:19,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113180583] [2021-03-11 14:35:19,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:19,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:19,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:19,724 INFO L87 Difference]: Start difference. First operand 179 states and 510 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,784 INFO L93 Difference]: Finished difference Result 305 states and 745 transitions. [2021-03-11 14:35:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:19,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,785 INFO L225 Difference]: With dead ends: 305 [2021-03-11 14:35:19,785 INFO L226 Difference]: Without dead ends: 291 [2021-03-11 14:35:19,785 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-03-11 14:35:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 183. [2021-03-11 14:35:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.8461538461538463) internal successors, (518), 182 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 518 transitions. [2021-03-11 14:35:19,788 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 518 transitions. Word has length 19 [2021-03-11 14:35:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,788 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 518 transitions. [2021-03-11 14:35:19,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,789 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 518 transitions. [2021-03-11 14:35:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:19,789 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,789 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-03-11 14:35:19,789 INFO L428 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1988781052, now seen corresponding path program 396 times [2021-03-11 14:35:19,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430420766] [2021-03-11 14:35:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:19,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,820 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:19,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:19,836 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:19,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:19,856 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:19,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430420766] [2021-03-11 14:35:19,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:19,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043121875] [2021-03-11 14:35:19,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:19,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:19,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:19,876 INFO L87 Difference]: Start difference. First operand 183 states and 518 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,938 INFO L93 Difference]: Finished difference Result 294 states and 728 transitions. [2021-03-11 14:35:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:19,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,939 INFO L225 Difference]: With dead ends: 294 [2021-03-11 14:35:19,939 INFO L226 Difference]: Without dead ends: 272 [2021-03-11 14:35:19,939 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-03-11 14:35:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 173. [2021-03-11 14:35:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.883720930232558) internal successors, (496), 172 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 496 transitions. [2021-03-11 14:35:19,941 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 496 transitions. Word has length 19 [2021-03-11 14:35:19,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,941 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 496 transitions. [2021-03-11 14:35:19,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 496 transitions. [2021-03-11 14:35:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:19,941 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,941 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-03-11 14:35:19,942 INFO L428 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,942 INFO L82 PathProgramCache]: Analyzing trace with hash 986570822, now seen corresponding path program 397 times [2021-03-11 14:35:19,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951105640] [2021-03-11 14:35:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:19,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:19,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:19,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:19,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:20,000 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:20,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:20,021 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:20,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951105640] [2021-03-11 14:35:20,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:20,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177948599] [2021-03-11 14:35:20,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:20,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:20,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:20,041 INFO L87 Difference]: Start difference. First operand 173 states and 496 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,090 INFO L93 Difference]: Finished difference Result 303 states and 733 transitions. [2021-03-11 14:35:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:20,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:20,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,091 INFO L225 Difference]: With dead ends: 303 [2021-03-11 14:35:20,091 INFO L226 Difference]: Without dead ends: 287 [2021-03-11 14:35:20,091 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-03-11 14:35:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 179. [2021-03-11 14:35:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.865168539325843) internal successors, (510), 178 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 510 transitions. [2021-03-11 14:35:20,095 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 510 transitions. Word has length 19 [2021-03-11 14:35:20,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,095 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 510 transitions. [2021-03-11 14:35:20,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 510 transitions. [2021-03-11 14:35:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:20,096 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,096 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-03-11 14:35:20,096 INFO L428 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1165155724, now seen corresponding path program 398 times [2021-03-11 14:35:20,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816884919] [2021-03-11 14:35:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:20,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:20,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:20,136 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:20,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:20,160 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:20,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:20,179 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:20,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816884919] [2021-03-11 14:35:20,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:20,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734999711] [2021-03-11 14:35:20,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:20,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:20,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:20,199 INFO L87 Difference]: Start difference. First operand 179 states and 510 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,259 INFO L93 Difference]: Finished difference Result 297 states and 718 transitions. [2021-03-11 14:35:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:20,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,260 INFO L225 Difference]: With dead ends: 297 [2021-03-11 14:35:20,260 INFO L226 Difference]: Without dead ends: 284 [2021-03-11 14:35:20,260 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-03-11 14:35:20,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 176. [2021-03-11 14:35:20,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.874285714285714) internal successors, (503), 175 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 503 transitions. [2021-03-11 14:35:20,265 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 503 transitions. Word has length 19 [2021-03-11 14:35:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,266 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 503 transitions. [2021-03-11 14:35:20,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,266 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 503 transitions. [2021-03-11 14:35:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:20,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-03-11 14:35:20,266 INFO L428 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2080662410, now seen corresponding path program 399 times [2021-03-11 14:35:20,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713874131] [2021-03-11 14:35:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:20,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:20,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:20,301 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:20,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:20,326 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:20,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:20,347 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:20,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713874131] [2021-03-11 14:35:20,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:20,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411526207] [2021-03-11 14:35:20,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:20,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:20,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:20,366 INFO L87 Difference]: Start difference. First operand 176 states and 503 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,413 INFO L93 Difference]: Finished difference Result 299 states and 727 transitions. [2021-03-11 14:35:20,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:20,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:20,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,414 INFO L225 Difference]: With dead ends: 299 [2021-03-11 14:35:20,414 INFO L226 Difference]: Without dead ends: 283 [2021-03-11 14:35:20,414 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-03-11 14:35:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 181. [2021-03-11 14:35:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.8444444444444446) internal successors, (512), 180 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 512 transitions. [2021-03-11 14:35:20,418 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 512 transitions. Word has length 19 [2021-03-11 14:35:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,418 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 512 transitions. [2021-03-11 14:35:20,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 512 transitions. [2021-03-11 14:35:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:20,418 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,418 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-03-11 14:35:20,418 INFO L428 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1329600316, now seen corresponding path program 400 times [2021-03-11 14:35:20,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701909942] [2021-03-11 14:35:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:20,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:20,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:20,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:20,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:20,483 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:20,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:20,503 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:20,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701909942] [2021-03-11 14:35:20,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:20,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282973726] [2021-03-11 14:35:20,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:20,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:20,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:20,523 INFO L87 Difference]: Start difference. First operand 181 states and 512 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,583 INFO L93 Difference]: Finished difference Result 286 states and 706 transitions. [2021-03-11 14:35:20,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:20,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,584 INFO L225 Difference]: With dead ends: 286 [2021-03-11 14:35:20,584 INFO L226 Difference]: Without dead ends: 269 [2021-03-11 14:35:20,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-03-11 14:35:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 176. [2021-03-11 14:35:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.857142857142857) internal successors, (500), 175 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 500 transitions. [2021-03-11 14:35:20,586 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 500 transitions. Word has length 19 [2021-03-11 14:35:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,586 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 500 transitions. [2021-03-11 14:35:20,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,586 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 500 transitions. [2021-03-11 14:35:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:20,586 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,587 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-03-11 14:35:20,587 INFO L428 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1804719824, now seen corresponding path program 401 times [2021-03-11 14:35:20,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310831505] [2021-03-11 14:35:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:20,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:20,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:20,627 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:20,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:20,642 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:20,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:20,662 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:20,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310831505] [2021-03-11 14:35:20,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:20,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118177818] [2021-03-11 14:35:20,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:20,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:20,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:20,682 INFO L87 Difference]: Start difference. First operand 176 states and 500 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,740 INFO L93 Difference]: Finished difference Result 290 states and 703 transitions. [2021-03-11 14:35:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:20,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,740 INFO L225 Difference]: With dead ends: 290 [2021-03-11 14:35:20,740 INFO L226 Difference]: Without dead ends: 280 [2021-03-11 14:35:20,740 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-03-11 14:35:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 178. [2021-03-11 14:35:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.84180790960452) internal successors, (503), 177 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 503 transitions. [2021-03-11 14:35:20,743 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 503 transitions. Word has length 19 [2021-03-11 14:35:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,743 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 503 transitions. [2021-03-11 14:35:20,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 503 transitions. [2021-03-11 14:35:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:20,743 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,743 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-03-11 14:35:20,743 INFO L428 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,744 INFO L82 PathProgramCache]: Analyzing trace with hash -94106516, now seen corresponding path program 402 times [2021-03-11 14:35:20,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245083279] [2021-03-11 14:35:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:20,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:20,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:20,780 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:20,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:20,795 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:20,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:20,815 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:20,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245083279] [2021-03-11 14:35:20,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:20,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906294928] [2021-03-11 14:35:20,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:20,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:20,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:20,835 INFO L87 Difference]: Start difference. First operand 178 states and 503 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,892 INFO L93 Difference]: Finished difference Result 283 states and 697 transitions. [2021-03-11 14:35:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:20,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,893 INFO L225 Difference]: With dead ends: 283 [2021-03-11 14:35:20,893 INFO L226 Difference]: Without dead ends: 266 [2021-03-11 14:35:20,893 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-03-11 14:35:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 173. [2021-03-11 14:35:20,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.866279069767442) internal successors, (493), 172 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 493 transitions. [2021-03-11 14:35:20,895 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 493 transitions. Word has length 19 [2021-03-11 14:35:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,896 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 493 transitions. [2021-03-11 14:35:20,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 493 transitions. [2021-03-11 14:35:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:20,896 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,896 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-03-11 14:35:20,896 INFO L428 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash 196668370, now seen corresponding path program 403 times [2021-03-11 14:35:20,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836983818] [2021-03-11 14:35:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:20,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:20,924 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:20,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:20,950 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:20,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:20,970 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:20,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836983818] [2021-03-11 14:35:20,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:20,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128372583] [2021-03-11 14:35:20,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:20,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:20,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:20,990 INFO L87 Difference]: Start difference. First operand 173 states and 493 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,049 INFO L93 Difference]: Finished difference Result 294 states and 714 transitions. [2021-03-11 14:35:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:21,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:21,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,050 INFO L225 Difference]: With dead ends: 294 [2021-03-11 14:35:21,050 INFO L226 Difference]: Without dead ends: 280 [2021-03-11 14:35:21,050 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-03-11 14:35:21,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 177. [2021-03-11 14:35:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.8579545454545454) internal successors, (503), 176 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 503 transitions. [2021-03-11 14:35:21,053 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 503 transitions. Word has length 19 [2021-03-11 14:35:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,053 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 503 transitions. [2021-03-11 14:35:21,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 503 transitions. [2021-03-11 14:35:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:21,053 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,053 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-03-11 14:35:21,053 INFO L428 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,053 INFO L82 PathProgramCache]: Analyzing trace with hash -677666956, now seen corresponding path program 404 times [2021-03-11 14:35:21,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74466588] [2021-03-11 14:35:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:21,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:21,080 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:21,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:21,106 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:21,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:21,126 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:21,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74466588] [2021-03-11 14:35:21,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:21,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615916279] [2021-03-11 14:35:21,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:21,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:21,146 INFO L87 Difference]: Start difference. First operand 177 states and 503 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,206 INFO L93 Difference]: Finished difference Result 290 states and 703 transitions. [2021-03-11 14:35:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:21,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,207 INFO L225 Difference]: With dead ends: 290 [2021-03-11 14:35:21,207 INFO L226 Difference]: Without dead ends: 278 [2021-03-11 14:35:21,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-03-11 14:35:21,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 175. [2021-03-11 14:35:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 2.8620689655172415) internal successors, (498), 174 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 498 transitions. [2021-03-11 14:35:21,209 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 498 transitions. Word has length 19 [2021-03-11 14:35:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,209 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 498 transitions. [2021-03-11 14:35:21,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 498 transitions. [2021-03-11 14:35:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:21,210 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,210 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-03-11 14:35:21,210 INFO L428 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1686073366, now seen corresponding path program 405 times [2021-03-11 14:35:21,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722899521] [2021-03-11 14:35:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:21,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:21,236 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:21,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:21,251 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:21,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:21,271 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:21,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722899521] [2021-03-11 14:35:21,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:21,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712452054] [2021-03-11 14:35:21,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:21,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:21,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:21,293 INFO L87 Difference]: Start difference. First operand 175 states and 498 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,354 INFO L93 Difference]: Finished difference Result 292 states and 712 transitions. [2021-03-11 14:35:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,355 INFO L225 Difference]: With dead ends: 292 [2021-03-11 14:35:21,355 INFO L226 Difference]: Without dead ends: 278 [2021-03-11 14:35:21,355 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-03-11 14:35:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 179. [2021-03-11 14:35:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.842696629213483) internal successors, (506), 178 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 506 transitions. [2021-03-11 14:35:21,358 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 506 transitions. Word has length 19 [2021-03-11 14:35:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,358 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 506 transitions. [2021-03-11 14:35:21,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 506 transitions. [2021-03-11 14:35:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:21,358 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,358 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-03-11 14:35:21,358 INFO L428 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,358 INFO L82 PathProgramCache]: Analyzing trace with hash 940776222, now seen corresponding path program 406 times [2021-03-11 14:35:21,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780804020] [2021-03-11 14:35:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:21,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:21,385 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:21,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:21,400 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:21,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:21,419 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:21,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780804020] [2021-03-11 14:35:21,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:21,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587122211] [2021-03-11 14:35:21,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:21,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:21,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:21,438 INFO L87 Difference]: Start difference. First operand 179 states and 506 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,495 INFO L93 Difference]: Finished difference Result 281 states and 695 transitions. [2021-03-11 14:35:21,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:21,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:21,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,496 INFO L225 Difference]: With dead ends: 281 [2021-03-11 14:35:21,496 INFO L226 Difference]: Without dead ends: 265 [2021-03-11 14:35:21,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-03-11 14:35:21,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 175. [2021-03-11 14:35:21,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 2.8505747126436782) internal successors, (496), 174 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 496 transitions. [2021-03-11 14:35:21,499 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 496 transitions. Word has length 19 [2021-03-11 14:35:21,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,499 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 496 transitions. [2021-03-11 14:35:21,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,499 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 496 transitions. [2021-03-11 14:35:21,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:21,499 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,499 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-03-11 14:35:21,499 INFO L428 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1249121762, now seen corresponding path program 407 times [2021-03-11 14:35:21,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349625069] [2021-03-11 14:35:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:21,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:21,536 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:21,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:21,557 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:21,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:21,585 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:21,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349625069] [2021-03-11 14:35:21,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:21,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646160813] [2021-03-11 14:35:21,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:21,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:21,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:21,612 INFO L87 Difference]: Start difference. First operand 175 states and 496 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,677 INFO L93 Difference]: Finished difference Result 286 states and 694 transitions. [2021-03-11 14:35:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:21,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,677 INFO L225 Difference]: With dead ends: 286 [2021-03-11 14:35:21,677 INFO L226 Difference]: Without dead ends: 276 [2021-03-11 14:35:21,678 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-03-11 14:35:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 177. [2021-03-11 14:35:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.835227272727273) internal successors, (499), 176 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 499 transitions. [2021-03-11 14:35:21,680 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 499 transitions. Word has length 19 [2021-03-11 14:35:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,680 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 499 transitions. [2021-03-11 14:35:21,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 499 transitions. [2021-03-11 14:35:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:21,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,681 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-03-11 14:35:21,681 INFO L428 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,681 INFO L82 PathProgramCache]: Analyzing trace with hash 461491546, now seen corresponding path program 408 times [2021-03-11 14:35:21,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064817926] [2021-03-11 14:35:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:21,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:21,708 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:21,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:21,723 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:21,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:21,743 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:21,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064817926] [2021-03-11 14:35:21,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:21,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774562938] [2021-03-11 14:35:21,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:21,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:21,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:21,762 INFO L87 Difference]: Start difference. First operand 177 states and 499 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,823 INFO L93 Difference]: Finished difference Result 279 states and 688 transitions. [2021-03-11 14:35:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:21,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,824 INFO L225 Difference]: With dead ends: 279 [2021-03-11 14:35:21,824 INFO L226 Difference]: Without dead ends: 259 [2021-03-11 14:35:21,824 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-03-11 14:35:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 169. [2021-03-11 14:35:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.886904761904762) internal successors, (485), 168 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 485 transitions. [2021-03-11 14:35:21,826 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 485 transitions. Word has length 19 [2021-03-11 14:35:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,826 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 485 transitions. [2021-03-11 14:35:21,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 485 transitions. [2021-03-11 14:35:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:21,827 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,827 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-03-11 14:35:21,827 INFO L428 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,827 INFO L82 PathProgramCache]: Analyzing trace with hash -612467258, now seen corresponding path program 409 times [2021-03-11 14:35:21,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310644141] [2021-03-11 14:35:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:21,846 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:21,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:21,862 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:21,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:21,878 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:21,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:21,898 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:21,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310644141] [2021-03-11 14:35:21,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:21,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425168929] [2021-03-11 14:35:21,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:21,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:21,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:21,918 INFO L87 Difference]: Start difference. First operand 169 states and 485 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,965 INFO L93 Difference]: Finished difference Result 305 states and 732 transitions. [2021-03-11 14:35:21,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:21,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,966 INFO L225 Difference]: With dead ends: 305 [2021-03-11 14:35:21,966 INFO L226 Difference]: Without dead ends: 289 [2021-03-11 14:35:21,966 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-03-11 14:35:21,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 177. [2021-03-11 14:35:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.835227272727273) internal successors, (499), 176 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 499 transitions. [2021-03-11 14:35:21,968 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 499 transitions. Word has length 19 [2021-03-11 14:35:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,968 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 499 transitions. [2021-03-11 14:35:21,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 499 transitions. [2021-03-11 14:35:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:21,969 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,969 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-03-11 14:35:21,969 INFO L428 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash -237816072, now seen corresponding path program 410 times [2021-03-11 14:35:21,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450723740] [2021-03-11 14:35:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:21,986 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:21,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:22,003 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:22,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:22,019 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:22,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:22,039 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:22,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450723740] [2021-03-11 14:35:22,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:22,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383178500] [2021-03-11 14:35:22,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:22,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:22,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:22,059 INFO L87 Difference]: Start difference. First operand 177 states and 499 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,117 INFO L93 Difference]: Finished difference Result 303 states and 722 transitions. [2021-03-11 14:35:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:22,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:22,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,118 INFO L225 Difference]: With dead ends: 303 [2021-03-11 14:35:22,118 INFO L226 Difference]: Without dead ends: 281 [2021-03-11 14:35:22,118 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-03-11 14:35:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 169. [2021-03-11 14:35:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.863095238095238) internal successors, (481), 168 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 481 transitions. [2021-03-11 14:35:22,120 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 481 transitions. Word has length 19 [2021-03-11 14:35:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,120 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 481 transitions. [2021-03-11 14:35:22,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 481 transitions. [2021-03-11 14:35:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:22,120 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,120 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-03-11 14:35:22,120 INFO L428 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,121 INFO L82 PathProgramCache]: Analyzing trace with hash -82269952, now seen corresponding path program 411 times [2021-03-11 14:35:22,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134005585] [2021-03-11 14:35:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:22,140 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:22,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:22,157 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:22,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:22,179 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:22,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:22,199 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:22,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134005585] [2021-03-11 14:35:22,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:22,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301642468] [2021-03-11 14:35:22,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:22,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:22,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:22,219 INFO L87 Difference]: Start difference. First operand 169 states and 481 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,267 INFO L93 Difference]: Finished difference Result 296 states and 705 transitions. [2021-03-11 14:35:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:22,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,267 INFO L225 Difference]: With dead ends: 296 [2021-03-11 14:35:22,267 INFO L226 Difference]: Without dead ends: 280 [2021-03-11 14:35:22,267 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-03-11 14:35:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 172. [2021-03-11 14:35:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.8362573099415203) internal successors, (485), 171 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 485 transitions. [2021-03-11 14:35:22,270 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 485 transitions. Word has length 19 [2021-03-11 14:35:22,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,270 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 485 transitions. [2021-03-11 14:35:22,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 485 transitions. [2021-03-11 14:35:22,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:22,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-03-11 14:35:22,270 INFO L428 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,271 INFO L82 PathProgramCache]: Analyzing trace with hash 176788274, now seen corresponding path program 412 times [2021-03-11 14:35:22,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647012126] [2021-03-11 14:35:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:22,288 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:22,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:22,305 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:22,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:22,328 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:22,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:22,349 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:22,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647012126] [2021-03-11 14:35:22,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:22,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089233083] [2021-03-11 14:35:22,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:22,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:22,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:22,369 INFO L87 Difference]: Start difference. First operand 172 states and 485 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,413 INFO L93 Difference]: Finished difference Result 290 states and 690 transitions. [2021-03-11 14:35:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:22,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:22,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,414 INFO L225 Difference]: With dead ends: 290 [2021-03-11 14:35:22,414 INFO L226 Difference]: Without dead ends: 277 [2021-03-11 14:35:22,414 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-03-11 14:35:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 169. [2021-03-11 14:35:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.8452380952380953) internal successors, (478), 168 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 478 transitions. [2021-03-11 14:35:22,417 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 478 transitions. Word has length 19 [2021-03-11 14:35:22,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,417 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 478 transitions. [2021-03-11 14:35:22,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 478 transitions. [2021-03-11 14:35:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:22,417 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,417 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-03-11 14:35:22,417 INFO L428 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1840035768, now seen corresponding path program 413 times [2021-03-11 14:35:22,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972127362] [2021-03-11 14:35:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:22,434 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:22,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:22,451 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:22,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:22,475 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:22,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:22,495 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:22,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972127362] [2021-03-11 14:35:22,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:22,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830154163] [2021-03-11 14:35:22,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:22,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:22,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:22,518 INFO L87 Difference]: Start difference. First operand 169 states and 478 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,581 INFO L93 Difference]: Finished difference Result 291 states and 694 transitions. [2021-03-11 14:35:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:22,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:22,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,582 INFO L225 Difference]: With dead ends: 291 [2021-03-11 14:35:22,582 INFO L226 Difference]: Without dead ends: 277 [2021-03-11 14:35:22,582 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-03-11 14:35:22,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 171. [2021-03-11 14:35:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8294117647058825) internal successors, (481), 170 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 481 transitions. [2021-03-11 14:35:22,584 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 481 transitions. Word has length 19 [2021-03-11 14:35:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,584 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 481 transitions. [2021-03-11 14:35:22,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 481 transitions. [2021-03-11 14:35:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:22,585 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,585 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-03-11 14:35:22,585 INFO L428 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1334801698, now seen corresponding path program 414 times [2021-03-11 14:35:22,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321630253] [2021-03-11 14:35:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:22,602 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:22,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:22,618 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:22,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:22,642 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:22,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:22,663 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:22,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321630253] [2021-03-11 14:35:22,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:22,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003056592] [2021-03-11 14:35:22,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:22,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:22,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:22,683 INFO L87 Difference]: Start difference. First operand 171 states and 481 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,725 INFO L93 Difference]: Finished difference Result 287 states and 683 transitions. [2021-03-11 14:35:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:22,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:22,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,726 INFO L225 Difference]: With dead ends: 287 [2021-03-11 14:35:22,726 INFO L226 Difference]: Without dead ends: 271 [2021-03-11 14:35:22,726 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-03-11 14:35:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 165. [2021-03-11 14:35:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.8597560975609757) internal successors, (469), 164 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 469 transitions. [2021-03-11 14:35:22,728 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 469 transitions. Word has length 19 [2021-03-11 14:35:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,728 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 469 transitions. [2021-03-11 14:35:22,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 469 transitions. [2021-03-11 14:35:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:22,729 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,729 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-03-11 14:35:22,729 INFO L428 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1034952984, now seen corresponding path program 415 times [2021-03-11 14:35:22,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407752224] [2021-03-11 14:35:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:22,746 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:22,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:22,758 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:22,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:22,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:22,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:22,794 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:22,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407752224] [2021-03-11 14:35:22,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:22,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562200893] [2021-03-11 14:35:22,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:22,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:22,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:22,814 INFO L87 Difference]: Start difference. First operand 165 states and 469 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,861 INFO L93 Difference]: Finished difference Result 299 states and 714 transitions. [2021-03-11 14:35:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:22,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,862 INFO L225 Difference]: With dead ends: 299 [2021-03-11 14:35:22,862 INFO L226 Difference]: Without dead ends: 283 [2021-03-11 14:35:22,862 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-03-11 14:35:22,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 165. [2021-03-11 14:35:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.817073170731707) internal successors, (462), 164 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 462 transitions. [2021-03-11 14:35:22,864 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 462 transitions. Word has length 19 [2021-03-11 14:35:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,864 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 462 transitions. [2021-03-11 14:35:22,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 462 transitions. [2021-03-11 14:35:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:22,864 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,865 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-03-11 14:35:22,865 INFO L428 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash -660301798, now seen corresponding path program 416 times [2021-03-11 14:35:22,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239760217] [2021-03-11 14:35:22,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:22,882 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:22,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:22,892 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:22,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:22,908 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:22,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:22,928 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:22,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239760217] [2021-03-11 14:35:22,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:22,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755813242] [2021-03-11 14:35:22,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:22,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:22,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:22,947 INFO L87 Difference]: Start difference. First operand 165 states and 462 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,005 INFO L93 Difference]: Finished difference Result 297 states and 704 transitions. [2021-03-11 14:35:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:23,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,006 INFO L225 Difference]: With dead ends: 297 [2021-03-11 14:35:23,006 INFO L226 Difference]: Without dead ends: 275 [2021-03-11 14:35:23,006 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-03-11 14:35:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 157. [2021-03-11 14:35:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.8333333333333335) internal successors, (442), 156 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 442 transitions. [2021-03-11 14:35:23,008 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 442 transitions. Word has length 19 [2021-03-11 14:35:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,009 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 442 transitions. [2021-03-11 14:35:23,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 442 transitions. [2021-03-11 14:35:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:23,009 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,009 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-03-11 14:35:23,009 INFO L428 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,009 INFO L82 PathProgramCache]: Analyzing trace with hash -179159454, now seen corresponding path program 417 times [2021-03-11 14:35:23,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918664390] [2021-03-11 14:35:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:23,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:23,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:23,037 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:23,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:23,061 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:23,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:23,081 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:23,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918664390] [2021-03-11 14:35:23,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:23,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636183697] [2021-03-11 14:35:23,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:23,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:23,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:23,101 INFO L87 Difference]: Start difference. First operand 157 states and 442 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,145 INFO L93 Difference]: Finished difference Result 286 states and 682 transitions. [2021-03-11 14:35:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,146 INFO L225 Difference]: With dead ends: 286 [2021-03-11 14:35:23,146 INFO L226 Difference]: Without dead ends: 270 [2021-03-11 14:35:23,146 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-03-11 14:35:23,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 162. [2021-03-11 14:35:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.801242236024845) internal successors, (451), 161 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 451 transitions. [2021-03-11 14:35:23,148 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 451 transitions. Word has length 19 [2021-03-11 14:35:23,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,148 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 451 transitions. [2021-03-11 14:35:23,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 451 transitions. [2021-03-11 14:35:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:23,148 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,148 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-03-11 14:35:23,149 INFO L428 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,149 INFO L82 PathProgramCache]: Analyzing trace with hash -930221548, now seen corresponding path program 418 times [2021-03-11 14:35:23,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531482356] [2021-03-11 14:35:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:23,168 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:23,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:23,179 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:23,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:23,203 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:23,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:23,223 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:23,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531482356] [2021-03-11 14:35:23,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:23,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214092196] [2021-03-11 14:35:23,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:23,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:23,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:23,243 INFO L87 Difference]: Start difference. First operand 162 states and 451 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,323 INFO L93 Difference]: Finished difference Result 273 states and 661 transitions. [2021-03-11 14:35:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,324 INFO L225 Difference]: With dead ends: 273 [2021-03-11 14:35:23,324 INFO L226 Difference]: Without dead ends: 256 [2021-03-11 14:35:23,324 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-03-11 14:35:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 157. [2021-03-11 14:35:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.801282051282051) internal successors, (437), 156 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 437 transitions. [2021-03-11 14:35:23,326 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 437 transitions. Word has length 19 [2021-03-11 14:35:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,327 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 437 transitions. [2021-03-11 14:35:23,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 437 transitions. [2021-03-11 14:35:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:23,327 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,327 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-03-11 14:35:23,327 INFO L428 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2094625272, now seen corresponding path program 419 times [2021-03-11 14:35:23,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445491097] [2021-03-11 14:35:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:23,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:23,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:23,356 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:23,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:23,370 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:23,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:23,390 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:23,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445491097] [2021-03-11 14:35:23,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:23,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060008984] [2021-03-11 14:35:23,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:23,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:23,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:23,410 INFO L87 Difference]: Start difference. First operand 157 states and 437 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,474 INFO L93 Difference]: Finished difference Result 283 states and 672 transitions. [2021-03-11 14:35:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:23,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:23,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,474 INFO L225 Difference]: With dead ends: 283 [2021-03-11 14:35:23,475 INFO L226 Difference]: Without dead ends: 269 [2021-03-11 14:35:23,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-03-11 14:35:23,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 161. [2021-03-11 14:35:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.78125) internal successors, (445), 160 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 445 transitions. [2021-03-11 14:35:23,477 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 445 transitions. Word has length 19 [2021-03-11 14:35:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,477 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 445 transitions. [2021-03-11 14:35:23,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 445 transitions. [2021-03-11 14:35:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:23,477 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,477 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-03-11 14:35:23,477 INFO L428 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2094030626, now seen corresponding path program 420 times [2021-03-11 14:35:23,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268833009] [2021-03-11 14:35:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:23,494 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:23,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:23,505 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:23,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:23,519 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:23,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:23,539 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:23,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268833009] [2021-03-11 14:35:23,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:23,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207367226] [2021-03-11 14:35:23,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:23,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:23,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:23,559 INFO L87 Difference]: Start difference. First operand 161 states and 445 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,623 INFO L93 Difference]: Finished difference Result 272 states and 655 transitions. [2021-03-11 14:35:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:23,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,624 INFO L225 Difference]: With dead ends: 272 [2021-03-11 14:35:23,624 INFO L226 Difference]: Without dead ends: 250 [2021-03-11 14:35:23,624 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-03-11 14:35:23,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 151. [2021-03-11 14:35:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.82) internal successors, (423), 150 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 423 transitions. [2021-03-11 14:35:23,627 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 423 transitions. Word has length 19 [2021-03-11 14:35:23,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,627 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 423 transitions. [2021-03-11 14:35:23,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 423 transitions. [2021-03-11 14:35:23,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:23,627 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,627 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-03-11 14:35:23,628 INFO L428 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,628 INFO L82 PathProgramCache]: Analyzing trace with hash 677525702, now seen corresponding path program 421 times [2021-03-11 14:35:23,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971016282] [2021-03-11 14:35:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:23,645 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:23,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:23,663 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:23,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:23,685 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:23,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:23,709 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:23,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971016282] [2021-03-11 14:35:23,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:23,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266339068] [2021-03-11 14:35:23,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:23,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:23,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:23,729 INFO L87 Difference]: Start difference. First operand 151 states and 423 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,773 INFO L93 Difference]: Finished difference Result 273 states and 645 transitions. [2021-03-11 14:35:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,774 INFO L225 Difference]: With dead ends: 273 [2021-03-11 14:35:23,774 INFO L226 Difference]: Without dead ends: 257 [2021-03-11 14:35:23,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-03-11 14:35:23,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 157. [2021-03-11 14:35:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.801282051282051) internal successors, (437), 156 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 437 transitions. [2021-03-11 14:35:23,776 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 437 transitions. Word has length 19 [2021-03-11 14:35:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,777 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 437 transitions. [2021-03-11 14:35:23,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 437 transitions. [2021-03-11 14:35:23,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:23,777 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,777 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-03-11 14:35:23,777 INFO L428 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash 936583928, now seen corresponding path program 422 times [2021-03-11 14:35:23,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378376938] [2021-03-11 14:35:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:23,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:23,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:23,812 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:23,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:23,835 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:23,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:23,855 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:23,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378376938] [2021-03-11 14:35:23,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:23,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637691159] [2021-03-11 14:35:23,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:23,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:23,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:23,875 INFO L87 Difference]: Start difference. First operand 157 states and 437 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,923 INFO L93 Difference]: Finished difference Result 267 states and 630 transitions. [2021-03-11 14:35:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:23,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:23,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,923 INFO L225 Difference]: With dead ends: 267 [2021-03-11 14:35:23,923 INFO L226 Difference]: Without dead ends: 254 [2021-03-11 14:35:23,924 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-03-11 14:35:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 154. [2021-03-11 14:35:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.810457516339869) internal successors, (430), 153 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 430 transitions. [2021-03-11 14:35:23,926 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 430 transitions. Word has length 19 [2021-03-11 14:35:23,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,926 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 430 transitions. [2021-03-11 14:35:23,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,926 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 430 transitions. [2021-03-11 14:35:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:23,926 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,926 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-03-11 14:35:23,926 INFO L428 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash -922912152, now seen corresponding path program 423 times [2021-03-11 14:35:23,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095522628] [2021-03-11 14:35:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:23,943 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:23,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:23,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:23,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:23,986 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:23,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:24,007 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:24,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095522628] [2021-03-11 14:35:24,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:24,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662131956] [2021-03-11 14:35:24,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:24,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:24,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:24,027 INFO L87 Difference]: Start difference. First operand 154 states and 430 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,095 INFO L93 Difference]: Finished difference Result 264 states and 625 transitions. [2021-03-11 14:35:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:24,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,096 INFO L225 Difference]: With dead ends: 264 [2021-03-11 14:35:24,096 INFO L226 Difference]: Without dead ends: 248 [2021-03-11 14:35:24,096 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-03-11 14:35:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 159. [2021-03-11 14:35:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.778481012658228) internal successors, (439), 158 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 439 transitions. [2021-03-11 14:35:24,098 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 439 transitions. Word has length 19 [2021-03-11 14:35:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,098 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 439 transitions. [2021-03-11 14:35:24,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 439 transitions. [2021-03-11 14:35:24,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:24,098 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,098 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-03-11 14:35:24,098 INFO L428 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1673974246, now seen corresponding path program 424 times [2021-03-11 14:35:24,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044387940] [2021-03-11 14:35:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:24,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:24,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:24,134 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:24,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:24,159 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:24,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:24,179 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:24,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044387940] [2021-03-11 14:35:24,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:24,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578877633] [2021-03-11 14:35:24,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:24,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:24,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:24,199 INFO L87 Difference]: Start difference. First operand 159 states and 439 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,264 INFO L93 Difference]: Finished difference Result 251 states and 604 transitions. [2021-03-11 14:35:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:24,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,265 INFO L225 Difference]: With dead ends: 251 [2021-03-11 14:35:24,265 INFO L226 Difference]: Without dead ends: 234 [2021-03-11 14:35:24,265 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-03-11 14:35:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 154. [2021-03-11 14:35:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.7908496732026142) internal successors, (427), 153 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 427 transitions. [2021-03-11 14:35:24,268 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 427 transitions. Word has length 19 [2021-03-11 14:35:24,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,268 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 427 transitions. [2021-03-11 14:35:24,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 427 transitions. [2021-03-11 14:35:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:24,268 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,268 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-03-11 14:35:24,269 INFO L428 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,269 INFO L82 PathProgramCache]: Analyzing trace with hash -522490524, now seen corresponding path program 425 times [2021-03-11 14:35:24,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482045579] [2021-03-11 14:35:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:24,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:24,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:24,307 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:24,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:24,323 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:24,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:24,343 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:24,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482045579] [2021-03-11 14:35:24,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:24,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326129054] [2021-03-11 14:35:24,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:24,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:24,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:24,364 INFO L87 Difference]: Start difference. First operand 154 states and 427 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,410 INFO L93 Difference]: Finished difference Result 246 states and 592 transitions. [2021-03-11 14:35:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:24,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:24,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,411 INFO L225 Difference]: With dead ends: 246 [2021-03-11 14:35:24,411 INFO L226 Difference]: Without dead ends: 236 [2021-03-11 14:35:24,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-03-11 14:35:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 156. [2021-03-11 14:35:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.774193548387097) internal successors, (430), 155 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 430 transitions. [2021-03-11 14:35:24,413 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 430 transitions. Word has length 19 [2021-03-11 14:35:24,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,413 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 430 transitions. [2021-03-11 14:35:24,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 430 transitions. [2021-03-11 14:35:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:24,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,413 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-03-11 14:35:24,414 INFO L428 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,414 INFO L82 PathProgramCache]: Analyzing trace with hash 222211974, now seen corresponding path program 426 times [2021-03-11 14:35:24,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532291755] [2021-03-11 14:35:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:24,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:24,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:24,449 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:24,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:24,464 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:24,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:24,484 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:24,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532291755] [2021-03-11 14:35:24,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:24,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826742219] [2021-03-11 14:35:24,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:24,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:24,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:24,504 INFO L87 Difference]: Start difference. First operand 156 states and 430 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,564 INFO L93 Difference]: Finished difference Result 235 states and 578 transitions. [2021-03-11 14:35:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,565 INFO L225 Difference]: With dead ends: 235 [2021-03-11 14:35:24,565 INFO L226 Difference]: Without dead ends: 218 [2021-03-11 14:35:24,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-03-11 14:35:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 151. [2021-03-11 14:35:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.8) internal successors, (420), 150 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 420 transitions. [2021-03-11 14:35:24,567 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 420 transitions. Word has length 19 [2021-03-11 14:35:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,567 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 420 transitions. [2021-03-11 14:35:24,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,567 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 420 transitions. [2021-03-11 14:35:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:24,568 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,568 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-03-11 14:35:24,568 INFO L428 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,568 INFO L82 PathProgramCache]: Analyzing trace with hash -722039428, now seen corresponding path program 427 times [2021-03-11 14:35:24,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251648795] [2021-03-11 14:35:24,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:24,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:24,595 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:24,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:24,619 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:24,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:24,639 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:24,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251648795] [2021-03-11 14:35:24,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:24,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033850493] [2021-03-11 14:35:24,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:24,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:24,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:24,659 INFO L87 Difference]: Start difference. First operand 151 states and 420 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,721 INFO L93 Difference]: Finished difference Result 266 states and 629 transitions. [2021-03-11 14:35:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:24,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,722 INFO L225 Difference]: With dead ends: 266 [2021-03-11 14:35:24,722 INFO L226 Difference]: Without dead ends: 252 [2021-03-11 14:35:24,722 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-03-11 14:35:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 155. [2021-03-11 14:35:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.792207792207792) internal successors, (430), 154 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 430 transitions. [2021-03-11 14:35:24,724 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 430 transitions. Word has length 19 [2021-03-11 14:35:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,725 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 430 transitions. [2021-03-11 14:35:24,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 430 transitions. [2021-03-11 14:35:24,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:24,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,725 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-03-11 14:35:24,725 INFO L428 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,725 INFO L82 PathProgramCache]: Analyzing trace with hash 398090402, now seen corresponding path program 428 times [2021-03-11 14:35:24,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020506888] [2021-03-11 14:35:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:24,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:24,755 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:24,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:24,778 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:24,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:24,799 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:24,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020506888] [2021-03-11 14:35:24,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:24,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17084160] [2021-03-11 14:35:24,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:24,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:24,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:24,819 INFO L87 Difference]: Start difference. First operand 155 states and 430 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,870 INFO L93 Difference]: Finished difference Result 262 states and 618 transitions. [2021-03-11 14:35:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:24,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:24,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,870 INFO L225 Difference]: With dead ends: 262 [2021-03-11 14:35:24,870 INFO L226 Difference]: Without dead ends: 250 [2021-03-11 14:35:24,870 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-03-11 14:35:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 153. [2021-03-11 14:35:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.7960526315789473) internal successors, (425), 152 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 425 transitions. [2021-03-11 14:35:24,872 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 425 transitions. Word has length 19 [2021-03-11 14:35:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,873 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 425 transitions. [2021-03-11 14:35:24,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 425 transitions. [2021-03-11 14:35:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:24,873 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,873 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-03-11 14:35:24,873 INFO L428 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,873 INFO L82 PathProgramCache]: Analyzing trace with hash 888901530, now seen corresponding path program 429 times [2021-03-11 14:35:24,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638729040] [2021-03-11 14:35:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:24,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:24,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:24,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:24,915 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:24,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:24,938 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:24,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638729040] [2021-03-11 14:35:24,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:24,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395991628] [2021-03-11 14:35:24,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:24,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:24,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:24,958 INFO L87 Difference]: Start difference. First operand 153 states and 425 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,023 INFO L93 Difference]: Finished difference Result 260 states and 615 transitions. [2021-03-11 14:35:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,024 INFO L225 Difference]: With dead ends: 260 [2021-03-11 14:35:25,024 INFO L226 Difference]: Without dead ends: 246 [2021-03-11 14:35:25,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-03-11 14:35:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 157. [2021-03-11 14:35:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.7756410256410255) internal successors, (433), 156 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 433 transitions. [2021-03-11 14:35:25,026 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 433 transitions. Word has length 19 [2021-03-11 14:35:25,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,026 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 433 transitions. [2021-03-11 14:35:25,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,026 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 433 transitions. [2021-03-11 14:35:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:25,026 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,027 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-03-11 14:35:25,027 INFO L428 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2082928226, now seen corresponding path program 430 times [2021-03-11 14:35:25,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662156226] [2021-03-11 14:35:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:25,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:25,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:25,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:25,069 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:25,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:25,089 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:25,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662156226] [2021-03-11 14:35:25,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:25,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396412680] [2021-03-11 14:35:25,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:25,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:25,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:25,109 INFO L87 Difference]: Start difference. First operand 157 states and 433 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,174 INFO L93 Difference]: Finished difference Result 249 states and 598 transitions. [2021-03-11 14:35:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:25,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,175 INFO L225 Difference]: With dead ends: 249 [2021-03-11 14:35:25,175 INFO L226 Difference]: Without dead ends: 233 [2021-03-11 14:35:25,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-03-11 14:35:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 153. [2021-03-11 14:35:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.7828947368421053) internal successors, (423), 152 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 423 transitions. [2021-03-11 14:35:25,177 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 423 transitions. Word has length 19 [2021-03-11 14:35:25,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,177 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 423 transitions. [2021-03-11 14:35:25,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 423 transitions. [2021-03-11 14:35:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:25,177 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,177 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-03-11 14:35:25,177 INFO L428 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,177 INFO L82 PathProgramCache]: Analyzing trace with hash -137139400, now seen corresponding path program 431 times [2021-03-11 14:35:25,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867603978] [2021-03-11 14:35:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:25,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:25,205 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,220 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:25,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:25,241 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:25,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867603978] [2021-03-11 14:35:25,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:25,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801388078] [2021-03-11 14:35:25,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:25,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:25,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:25,261 INFO L87 Difference]: Start difference. First operand 153 states and 423 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,306 INFO L93 Difference]: Finished difference Result 245 states and 588 transitions. [2021-03-11 14:35:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:25,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:25,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,307 INFO L225 Difference]: With dead ends: 245 [2021-03-11 14:35:25,307 INFO L226 Difference]: Without dead ends: 235 [2021-03-11 14:35:25,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-03-11 14:35:25,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 155. [2021-03-11 14:35:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.7662337662337664) internal successors, (426), 154 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 426 transitions. [2021-03-11 14:35:25,309 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 426 transitions. Word has length 19 [2021-03-11 14:35:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,309 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 426 transitions. [2021-03-11 14:35:25,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 426 transitions. [2021-03-11 14:35:25,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:25,310 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,310 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-03-11 14:35:25,310 INFO L428 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,310 INFO L82 PathProgramCache]: Analyzing trace with hash 607563098, now seen corresponding path program 432 times [2021-03-11 14:35:25,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954934231] [2021-03-11 14:35:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:25,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:25,337 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,353 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:25,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:25,372 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:25,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954934231] [2021-03-11 14:35:25,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:25,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923858508] [2021-03-11 14:35:25,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:25,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:25,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:25,392 INFO L87 Difference]: Start difference. First operand 155 states and 426 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,448 INFO L93 Difference]: Finished difference Result 234 states and 574 transitions. [2021-03-11 14:35:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:25,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:25,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,449 INFO L225 Difference]: With dead ends: 234 [2021-03-11 14:35:25,449 INFO L226 Difference]: Without dead ends: 214 [2021-03-11 14:35:25,449 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-03-11 14:35:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 147. [2021-03-11 14:35:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.8219178082191783) internal successors, (412), 146 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 412 transitions. [2021-03-11 14:35:25,452 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 412 transitions. Word has length 19 [2021-03-11 14:35:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,452 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 412 transitions. [2021-03-11 14:35:25,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 412 transitions. [2021-03-11 14:35:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:25,452 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,453 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-03-11 14:35:25,453 INFO L428 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1774006882, now seen corresponding path program 433 times [2021-03-11 14:35:25,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199993447] [2021-03-11 14:35:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:25,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:25,478 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,495 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:25,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:25,519 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:25,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:25,540 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:25,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199993447] [2021-03-11 14:35:25,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:25,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689768893] [2021-03-11 14:35:25,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:25,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:25,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:25,560 INFO L87 Difference]: Start difference. First operand 147 states and 412 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,610 INFO L93 Difference]: Finished difference Result 260 states and 610 transitions. [2021-03-11 14:35:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:25,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:25,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,611 INFO L225 Difference]: With dead ends: 260 [2021-03-11 14:35:25,611 INFO L226 Difference]: Without dead ends: 244 [2021-03-11 14:35:25,611 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-03-11 14:35:25,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 154. [2021-03-11 14:35:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.810457516339869) internal successors, (430), 153 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 430 transitions. [2021-03-11 14:35:25,613 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 430 transitions. Word has length 19 [2021-03-11 14:35:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,613 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 430 transitions. [2021-03-11 14:35:25,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 430 transitions. [2021-03-11 14:35:25,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:25,613 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,613 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-03-11 14:35:25,613 INFO L428 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,613 INFO L82 PathProgramCache]: Analyzing trace with hash -377719664, now seen corresponding path program 434 times [2021-03-11 14:35:25,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805709543] [2021-03-11 14:35:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:25,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:25,635 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,653 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:25,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:25,676 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:25,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:25,697 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:25,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805709543] [2021-03-11 14:35:25,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:25,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057000353] [2021-03-11 14:35:25,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:25,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:25,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:25,717 INFO L87 Difference]: Start difference. First operand 154 states and 430 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,783 INFO L93 Difference]: Finished difference Result 254 states and 595 transitions. [2021-03-11 14:35:25,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:25,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:25,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,784 INFO L225 Difference]: With dead ends: 254 [2021-03-11 14:35:25,784 INFO L226 Difference]: Without dead ends: 241 [2021-03-11 14:35:25,784 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-03-11 14:35:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 151. [2021-03-11 14:35:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.8266666666666667) internal successors, (424), 150 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 424 transitions. [2021-03-11 14:35:25,787 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 424 transitions. Word has length 19 [2021-03-11 14:35:25,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,787 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 424 transitions. [2021-03-11 14:35:25,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 424 transitions. [2021-03-11 14:35:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:25,787 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,788 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-03-11 14:35:25,788 INFO L428 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,788 INFO L82 PathProgramCache]: Analyzing trace with hash 173569028, now seen corresponding path program 435 times [2021-03-11 14:35:25,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695577863] [2021-03-11 14:35:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,798 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:25,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:25,811 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,828 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:25,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:25,851 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:25,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:25,871 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:25,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695577863] [2021-03-11 14:35:25,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:25,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006110383] [2021-03-11 14:35:25,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:25,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:25,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:25,890 INFO L87 Difference]: Start difference. First operand 151 states and 424 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,936 INFO L93 Difference]: Finished difference Result 260 states and 608 transitions. [2021-03-11 14:35:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:25,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,937 INFO L225 Difference]: With dead ends: 260 [2021-03-11 14:35:25,937 INFO L226 Difference]: Without dead ends: 244 [2021-03-11 14:35:25,937 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-03-11 14:35:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 154. [2021-03-11 14:35:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.7973856209150325) internal successors, (428), 153 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 428 transitions. [2021-03-11 14:35:25,939 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 428 transitions. Word has length 19 [2021-03-11 14:35:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,939 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 428 transitions. [2021-03-11 14:35:25,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 428 transitions. [2021-03-11 14:35:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:25,939 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,940 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-03-11 14:35:25,940 INFO L428 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,940 INFO L82 PathProgramCache]: Analyzing trace with hash 432627254, now seen corresponding path program 436 times [2021-03-11 14:35:25,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682764895] [2021-03-11 14:35:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:25,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:25,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,979 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:25,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:26,002 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:26,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:26,023 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:26,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682764895] [2021-03-11 14:35:26,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:26,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945428663] [2021-03-11 14:35:26,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:26,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:26,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:26,043 INFO L87 Difference]: Start difference. First operand 154 states and 428 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,095 INFO L93 Difference]: Finished difference Result 254 states and 593 transitions. [2021-03-11 14:35:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:26,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,096 INFO L225 Difference]: With dead ends: 254 [2021-03-11 14:35:26,096 INFO L226 Difference]: Without dead ends: 241 [2021-03-11 14:35:26,096 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-03-11 14:35:26,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 151. [2021-03-11 14:35:26,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.8133333333333335) internal successors, (422), 150 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 422 transitions. [2021-03-11 14:35:26,098 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 422 transitions. Word has length 19 [2021-03-11 14:35:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,098 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 422 transitions. [2021-03-11 14:35:26,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 422 transitions. [2021-03-11 14:35:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:26,099 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,099 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-03-11 14:35:26,099 INFO L428 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,099 INFO L82 PathProgramCache]: Analyzing trace with hash -807811068, now seen corresponding path program 437 times [2021-03-11 14:35:26,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217200326] [2021-03-11 14:35:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,109 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,121 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:26,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:26,141 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:26,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:26,157 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:26,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:26,176 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:26,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217200326] [2021-03-11 14:35:26,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:26,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554047418] [2021-03-11 14:35:26,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:26,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:26,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:26,196 INFO L87 Difference]: Start difference. First operand 151 states and 422 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,262 INFO L93 Difference]: Finished difference Result 246 states and 577 transitions. [2021-03-11 14:35:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:26,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,262 INFO L225 Difference]: With dead ends: 246 [2021-03-11 14:35:26,262 INFO L226 Difference]: Without dead ends: 236 [2021-03-11 14:35:26,263 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-03-11 14:35:26,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 152. [2021-03-11 14:35:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.801324503311258) internal successors, (423), 151 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 423 transitions. [2021-03-11 14:35:26,265 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 423 transitions. Word has length 19 [2021-03-11 14:35:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,265 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 423 transitions. [2021-03-11 14:35:26,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 423 transitions. [2021-03-11 14:35:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:26,265 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,265 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-03-11 14:35:26,265 INFO L428 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1047453406, now seen corresponding path program 438 times [2021-03-11 14:35:26,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846034959] [2021-03-11 14:35:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,287 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,299 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:26,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:26,316 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:26,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:26,331 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:26,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:26,352 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:26,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846034959] [2021-03-11 14:35:26,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:26,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7286608] [2021-03-11 14:35:26,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:26,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:26,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:26,372 INFO L87 Difference]: Start difference. First operand 152 states and 423 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,424 INFO L93 Difference]: Finished difference Result 246 states and 576 transitions. [2021-03-11 14:35:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:26,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:26,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,424 INFO L225 Difference]: With dead ends: 246 [2021-03-11 14:35:26,424 INFO L226 Difference]: Without dead ends: 233 [2021-03-11 14:35:26,424 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-03-11 14:35:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 149. [2021-03-11 14:35:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.824324324324324) internal successors, (418), 148 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 418 transitions. [2021-03-11 14:35:26,426 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 418 transitions. Word has length 19 [2021-03-11 14:35:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,426 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 418 transitions. [2021-03-11 14:35:26,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 418 transitions. [2021-03-11 14:35:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:26,427 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,427 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-03-11 14:35:26,427 INFO L428 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,427 INFO L82 PathProgramCache]: Analyzing trace with hash -594926336, now seen corresponding path program 439 times [2021-03-11 14:35:26,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064334937] [2021-03-11 14:35:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,453 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:26,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:26,471 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:26,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:26,494 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:26,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:26,515 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:26,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064334937] [2021-03-11 14:35:26,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:26,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31331114] [2021-03-11 14:35:26,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:26,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:26,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:26,534 INFO L87 Difference]: Start difference. First operand 149 states and 418 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,585 INFO L93 Difference]: Finished difference Result 258 states and 603 transitions. [2021-03-11 14:35:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:26,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:26,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,586 INFO L225 Difference]: With dead ends: 258 [2021-03-11 14:35:26,586 INFO L226 Difference]: Without dead ends: 242 [2021-03-11 14:35:26,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-03-11 14:35:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 155. [2021-03-11 14:35:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.8051948051948052) internal successors, (432), 154 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 432 transitions. [2021-03-11 14:35:26,588 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 432 transitions. Word has length 19 [2021-03-11 14:35:26,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,588 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 432 transitions. [2021-03-11 14:35:26,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 432 transitions. [2021-03-11 14:35:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:26,588 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,588 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-03-11 14:35:26,588 INFO L428 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1548314414, now seen corresponding path program 440 times [2021-03-11 14:35:26,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068224132] [2021-03-11 14:35:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,598 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,611 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:26,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:26,629 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:26,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:26,652 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:26,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:26,672 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:26,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068224132] [2021-03-11 14:35:26,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:26,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950920752] [2021-03-11 14:35:26,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:26,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:26,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:26,692 INFO L87 Difference]: Start difference. First operand 155 states and 432 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,757 INFO L93 Difference]: Finished difference Result 252 states and 588 transitions. [2021-03-11 14:35:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:26,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:26,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,758 INFO L225 Difference]: With dead ends: 252 [2021-03-11 14:35:26,758 INFO L226 Difference]: Without dead ends: 239 [2021-03-11 14:35:26,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-03-11 14:35:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 152. [2021-03-11 14:35:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.814569536423841) internal successors, (425), 151 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 425 transitions. [2021-03-11 14:35:26,760 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 425 transitions. Word has length 19 [2021-03-11 14:35:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,760 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 425 transitions. [2021-03-11 14:35:26,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 425 transitions. [2021-03-11 14:35:26,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:26,760 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,760 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-03-11 14:35:26,761 INFO L428 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,761 INFO L82 PathProgramCache]: Analyzing trace with hash 499165252, now seen corresponding path program 441 times [2021-03-11 14:35:26,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371317766] [2021-03-11 14:35:26,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,770 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,783 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:26,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:26,801 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:26,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:26,826 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:26,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:26,846 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:26,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371317766] [2021-03-11 14:35:26,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:26,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776047106] [2021-03-11 14:35:26,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:26,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:26,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:26,866 INFO L87 Difference]: Start difference. First operand 152 states and 425 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,918 INFO L93 Difference]: Finished difference Result 254 states and 597 transitions. [2021-03-11 14:35:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:26,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:26,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,919 INFO L225 Difference]: With dead ends: 254 [2021-03-11 14:35:26,919 INFO L226 Difference]: Without dead ends: 238 [2021-03-11 14:35:26,919 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-03-11 14:35:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 157. [2021-03-11 14:35:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.782051282051282) internal successors, (434), 156 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 434 transitions. [2021-03-11 14:35:26,921 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 434 transitions. Word has length 19 [2021-03-11 14:35:26,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,921 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 434 transitions. [2021-03-11 14:35:26,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 434 transitions. [2021-03-11 14:35:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:26,921 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,921 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-03-11 14:35:26,922 INFO L428 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,922 INFO L82 PathProgramCache]: Analyzing trace with hash -251896842, now seen corresponding path program 442 times [2021-03-11 14:35:26,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700109609] [2021-03-11 14:35:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:26,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:26,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:26,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:26,987 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:26,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,007 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:27,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700109609] [2021-03-11 14:35:27,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:27,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646498589] [2021-03-11 14:35:27,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:27,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:27,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:27,027 INFO L87 Difference]: Start difference. First operand 157 states and 434 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,092 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2021-03-11 14:35:27,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:27,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,093 INFO L225 Difference]: With dead ends: 241 [2021-03-11 14:35:27,093 INFO L226 Difference]: Without dead ends: 224 [2021-03-11 14:35:27,093 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-03-11 14:35:27,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 152. [2021-03-11 14:35:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.794701986754967) internal successors, (422), 151 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 422 transitions. [2021-03-11 14:35:27,095 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 422 transitions. Word has length 19 [2021-03-11 14:35:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,095 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 422 transitions. [2021-03-11 14:35:27,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 422 transitions. [2021-03-11 14:35:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:27,096 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,096 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-03-11 14:35:27,096 INFO L428 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,096 INFO L82 PathProgramCache]: Analyzing trace with hash 908750314, now seen corresponding path program 443 times [2021-03-11 14:35:27,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249416065] [2021-03-11 14:35:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,105 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:27,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:27,135 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:27,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:27,150 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,170 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:27,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249416065] [2021-03-11 14:35:27,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:27,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810127742] [2021-03-11 14:35:27,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:27,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:27,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:27,190 INFO L87 Difference]: Start difference. First operand 152 states and 422 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,252 INFO L93 Difference]: Finished difference Result 245 states and 573 transitions. [2021-03-11 14:35:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:27,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,252 INFO L225 Difference]: With dead ends: 245 [2021-03-11 14:35:27,252 INFO L226 Difference]: Without dead ends: 235 [2021-03-11 14:35:27,253 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-03-11 14:35:27,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 154. [2021-03-11 14:35:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.7777777777777777) internal successors, (425), 153 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 425 transitions. [2021-03-11 14:35:27,254 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 425 transitions. Word has length 19 [2021-03-11 14:35:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,255 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 425 transitions. [2021-03-11 14:35:27,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 425 transitions. [2021-03-11 14:35:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:27,255 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,255 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-03-11 14:35:27,255 INFO L428 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1675603674, now seen corresponding path program 444 times [2021-03-11 14:35:27,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966092362] [2021-03-11 14:35:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:27,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:27,296 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:27,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:27,311 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,331 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:27,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966092362] [2021-03-11 14:35:27,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:27,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804583493] [2021-03-11 14:35:27,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:27,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:27,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:27,351 INFO L87 Difference]: Start difference. First operand 154 states and 425 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,418 INFO L93 Difference]: Finished difference Result 238 states and 567 transitions. [2021-03-11 14:35:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:27,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,419 INFO L225 Difference]: With dead ends: 238 [2021-03-11 14:35:27,419 INFO L226 Difference]: Without dead ends: 221 [2021-03-11 14:35:27,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-03-11 14:35:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 149. [2021-03-11 14:35:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.810810810810811) internal successors, (416), 148 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 416 transitions. [2021-03-11 14:35:27,421 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 416 transitions. Word has length 19 [2021-03-11 14:35:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,421 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 416 transitions. [2021-03-11 14:35:27,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 416 transitions. [2021-03-11 14:35:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:27,421 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,421 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-03-11 14:35:27,422 INFO L428 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash -269330112, now seen corresponding path program 445 times [2021-03-11 14:35:27,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539969531] [2021-03-11 14:35:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,444 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:27,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:27,462 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,484 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:27,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:27,505 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:27,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539969531] [2021-03-11 14:35:27,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:27,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527207947] [2021-03-11 14:35:27,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:27,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:27,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:27,524 INFO L87 Difference]: Start difference. First operand 149 states and 416 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,575 INFO L93 Difference]: Finished difference Result 244 states and 569 transitions. [2021-03-11 14:35:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:27,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,575 INFO L225 Difference]: With dead ends: 244 [2021-03-11 14:35:27,575 INFO L226 Difference]: Without dead ends: 228 [2021-03-11 14:35:27,576 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-03-11 14:35:27,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 155. [2021-03-11 14:35:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.792207792207792) internal successors, (430), 154 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 430 transitions. [2021-03-11 14:35:27,578 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 430 transitions. Word has length 19 [2021-03-11 14:35:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,578 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 430 transitions. [2021-03-11 14:35:27,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 430 transitions. [2021-03-11 14:35:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:27,578 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,578 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-03-11 14:35:27,578 INFO L428 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,578 INFO L82 PathProgramCache]: Analyzing trace with hash -10271886, now seen corresponding path program 446 times [2021-03-11 14:35:27,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611203699] [2021-03-11 14:35:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,588 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,600 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:27,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:27,618 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,641 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:27,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:27,661 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:27,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611203699] [2021-03-11 14:35:27,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:27,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845977257] [2021-03-11 14:35:27,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:27,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:27,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:27,681 INFO L87 Difference]: Start difference. First operand 155 states and 430 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,726 INFO L93 Difference]: Finished difference Result 238 states and 554 transitions. [2021-03-11 14:35:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,727 INFO L225 Difference]: With dead ends: 238 [2021-03-11 14:35:27,727 INFO L226 Difference]: Without dead ends: 225 [2021-03-11 14:35:27,727 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-03-11 14:35:27,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 152. [2021-03-11 14:35:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.801324503311258) internal successors, (423), 151 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 423 transitions. [2021-03-11 14:35:27,729 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 423 transitions. Word has length 19 [2021-03-11 14:35:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,729 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 423 transitions. [2021-03-11 14:35:27,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 423 transitions. [2021-03-11 14:35:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:27,729 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,729 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-03-11 14:35:27,729 INFO L428 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1869767966, now seen corresponding path program 447 times [2021-03-11 14:35:27,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108563822] [2021-03-11 14:35:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,740 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,753 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:27,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:27,771 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:27,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:27,796 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:27,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:27,817 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:27,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108563822] [2021-03-11 14:35:27,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:27,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072168926] [2021-03-11 14:35:27,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:27,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:27,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:27,838 INFO L87 Difference]: Start difference. First operand 152 states and 423 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,889 INFO L93 Difference]: Finished difference Result 235 states and 549 transitions. [2021-03-11 14:35:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:27,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,890 INFO L225 Difference]: With dead ends: 235 [2021-03-11 14:35:27,890 INFO L226 Difference]: Without dead ends: 219 [2021-03-11 14:35:27,890 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-03-11 14:35:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 157. [2021-03-11 14:35:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.769230769230769) internal successors, (432), 156 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 432 transitions. [2021-03-11 14:35:27,892 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 432 transitions. Word has length 19 [2021-03-11 14:35:27,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,892 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 432 transitions. [2021-03-11 14:35:27,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 432 transitions. [2021-03-11 14:35:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:27,893 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,893 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-03-11 14:35:27,893 INFO L428 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1674137236, now seen corresponding path program 448 times [2021-03-11 14:35:27,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300684248] [2021-03-11 14:35:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:27,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:27,941 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:27,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:27,970 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,990 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:27,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300684248] [2021-03-11 14:35:28,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:28,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654949821] [2021-03-11 14:35:28,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:28,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:28,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:28,010 INFO L87 Difference]: Start difference. First operand 157 states and 432 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,073 INFO L93 Difference]: Finished difference Result 222 states and 528 transitions. [2021-03-11 14:35:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:28,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,074 INFO L225 Difference]: With dead ends: 222 [2021-03-11 14:35:28,074 INFO L226 Difference]: Without dead ends: 205 [2021-03-11 14:35:28,074 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-03-11 14:35:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 152. [2021-03-11 14:35:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.781456953642384) internal successors, (420), 151 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 420 transitions. [2021-03-11 14:35:28,076 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 420 transitions. Word has length 19 [2021-03-11 14:35:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,076 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 420 transitions. [2021-03-11 14:35:28,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 420 transitions. [2021-03-11 14:35:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:28,076 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,076 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-03-11 14:35:28,076 INFO L428 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1469346338, now seen corresponding path program 449 times [2021-03-11 14:35:28,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799655025] [2021-03-11 14:35:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:28,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:28,118 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:28,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:28,134 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:28,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:28,155 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:28,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799655025] [2021-03-11 14:35:28,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:28,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043414293] [2021-03-11 14:35:28,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:28,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:28,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:28,175 INFO L87 Difference]: Start difference. First operand 152 states and 420 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,218 INFO L93 Difference]: Finished difference Result 217 states and 516 transitions. [2021-03-11 14:35:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:28,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:28,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,219 INFO L225 Difference]: With dead ends: 217 [2021-03-11 14:35:28,219 INFO L226 Difference]: Without dead ends: 207 [2021-03-11 14:35:28,219 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-03-11 14:35:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 154. [2021-03-11 14:35:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.764705882352941) internal successors, (423), 153 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 423 transitions. [2021-03-11 14:35:28,221 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 423 transitions. Word has length 19 [2021-03-11 14:35:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,221 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 423 transitions. [2021-03-11 14:35:28,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 423 transitions. [2021-03-11 14:35:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:28,221 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,221 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2021-03-11 14:35:28,221 INFO L428 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,222 INFO L82 PathProgramCache]: Analyzing trace with hash -724643840, now seen corresponding path program 450 times [2021-03-11 14:35:28,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614680356] [2021-03-11 14:35:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,245 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:28,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:28,263 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:28,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:28,278 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:28,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:28,298 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:28,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614680356] [2021-03-11 14:35:28,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:28,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513469558] [2021-03-11 14:35:28,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:28,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:28,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:28,338 INFO L87 Difference]: Start difference. First operand 154 states and 423 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,421 INFO L93 Difference]: Finished difference Result 206 states and 502 transitions. [2021-03-11 14:35:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:28,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,421 INFO L225 Difference]: With dead ends: 206 [2021-03-11 14:35:28,422 INFO L226 Difference]: Without dead ends: 189 [2021-03-11 14:35:28,422 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 146.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-03-11 14:35:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 149. [2021-03-11 14:35:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.7972972972972974) internal successors, (414), 148 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 414 transitions. [2021-03-11 14:35:28,424 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 414 transitions. Word has length 19 [2021-03-11 14:35:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,424 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 414 transitions. [2021-03-11 14:35:28,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 414 transitions. [2021-03-11 14:35:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:28,425 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,425 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2021-03-11 14:35:28,425 INFO L428 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1205521176, now seen corresponding path program 451 times [2021-03-11 14:35:28,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849880691] [2021-03-11 14:35:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,438 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,453 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:28,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:28,468 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:28,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:28,488 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:28,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:28,515 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:28,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849880691] [2021-03-11 14:35:28,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:28,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345762274] [2021-03-11 14:35:28,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:28,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:28,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:28,541 INFO L87 Difference]: Start difference. First operand 149 states and 414 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,629 INFO L93 Difference]: Finished difference Result 214 states and 510 transitions. [2021-03-11 14:35:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:28,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:28,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,630 INFO L225 Difference]: With dead ends: 214 [2021-03-11 14:35:28,630 INFO L226 Difference]: Without dead ends: 204 [2021-03-11 14:35:28,630 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-03-11 14:35:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 151. [2021-03-11 14:35:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.7866666666666666) internal successors, (418), 150 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 418 transitions. [2021-03-11 14:35:28,633 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 418 transitions. Word has length 19 [2021-03-11 14:35:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,633 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 418 transitions. [2021-03-11 14:35:28,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 418 transitions. [2021-03-11 14:35:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:28,633 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,633 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2021-03-11 14:35:28,633 INFO L428 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,634 INFO L82 PathProgramCache]: Analyzing trace with hash 965878838, now seen corresponding path program 452 times [2021-03-11 14:35:28,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426523882] [2021-03-11 14:35:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:28,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:28,679 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:28,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:28,697 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:28,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:28,718 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:28,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426523882] [2021-03-11 14:35:28,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:28,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060071520] [2021-03-11 14:35:28,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:28,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:28,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:28,738 INFO L87 Difference]: Start difference. First operand 151 states and 418 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,787 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2021-03-11 14:35:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:28,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,788 INFO L225 Difference]: With dead ends: 214 [2021-03-11 14:35:28,788 INFO L226 Difference]: Without dead ends: 203 [2021-03-11 14:35:28,788 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-03-11 14:35:28,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 150. [2021-03-11 14:35:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.791946308724832) internal successors, (416), 149 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2021-03-11 14:35:28,790 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 19 [2021-03-11 14:35:28,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,790 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2021-03-11 14:35:28,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,790 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2021-03-11 14:35:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:28,790 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,790 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2021-03-11 14:35:28,791 INFO L428 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1478505162, now seen corresponding path program 453 times [2021-03-11 14:35:28,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467053443] [2021-03-11 14:35:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:28,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:28,824 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:28,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:28,839 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:28,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:28,859 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:28,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467053443] [2021-03-11 14:35:28,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:28,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842123869] [2021-03-11 14:35:28,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:28,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:28,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:28,879 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,945 INFO L93 Difference]: Finished difference Result 211 states and 504 transitions. [2021-03-11 14:35:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:28,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,945 INFO L225 Difference]: With dead ends: 211 [2021-03-11 14:35:28,945 INFO L226 Difference]: Without dead ends: 201 [2021-03-11 14:35:28,946 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-03-11 14:35:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 152. [2021-03-11 14:35:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.774834437086093) internal successors, (419), 151 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 419 transitions. [2021-03-11 14:35:28,947 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 419 transitions. Word has length 19 [2021-03-11 14:35:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,948 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 419 transitions. [2021-03-11 14:35:28,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,948 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 419 transitions. [2021-03-11 14:35:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:28,948 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,948 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2021-03-11 14:35:28,948 INFO L428 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2123535310, now seen corresponding path program 454 times [2021-03-11 14:35:28,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292044801] [2021-03-11 14:35:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,958 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:28,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:28,981 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:28,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:28,996 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:28,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:29,016 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:29,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292044801] [2021-03-11 14:35:29,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:29,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893607205] [2021-03-11 14:35:29,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:29,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:29,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:29,036 INFO L87 Difference]: Start difference. First operand 152 states and 419 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,094 INFO L93 Difference]: Finished difference Result 204 states and 498 transitions. [2021-03-11 14:35:29,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:29,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:29,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,095 INFO L225 Difference]: With dead ends: 204 [2021-03-11 14:35:29,095 INFO L226 Difference]: Without dead ends: 190 [2021-03-11 14:35:29,095 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-03-11 14:35:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 150. [2021-03-11 14:35:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.785234899328859) internal successors, (415), 149 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 415 transitions. [2021-03-11 14:35:29,096 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 415 transitions. Word has length 19 [2021-03-11 14:35:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,097 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 415 transitions. [2021-03-11 14:35:29,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 415 transitions. [2021-03-11 14:35:29,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:29,097 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,097 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2021-03-11 14:35:29,097 INFO L428 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,097 INFO L82 PathProgramCache]: Analyzing trace with hash -107206542, now seen corresponding path program 455 times [2021-03-11 14:35:29,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313357070] [2021-03-11 14:35:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,107 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:29,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:29,119 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:29,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:29,131 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:29,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:29,146 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:29,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:29,167 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:29,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313357070] [2021-03-11 14:35:29,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:29,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517834038] [2021-03-11 14:35:29,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:29,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:29,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:29,187 INFO L87 Difference]: Start difference. First operand 150 states and 415 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,232 INFO L93 Difference]: Finished difference Result 198 states and 486 transitions. [2021-03-11 14:35:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:29,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,233 INFO L225 Difference]: With dead ends: 198 [2021-03-11 14:35:29,233 INFO L226 Difference]: Without dead ends: 188 [2021-03-11 14:35:29,233 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-03-11 14:35:29,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 152. [2021-03-11 14:35:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.7682119205298013) internal successors, (418), 151 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 418 transitions. [2021-03-11 14:35:29,235 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 418 transitions. Word has length 19 [2021-03-11 14:35:29,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,235 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 418 transitions. [2021-03-11 14:35:29,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,235 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 418 transitions. [2021-03-11 14:35:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:29,235 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,235 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2021-03-11 14:35:29,235 INFO L428 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,235 INFO L82 PathProgramCache]: Analyzing trace with hash 637495956, now seen corresponding path program 456 times [2021-03-11 14:35:29,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851849782] [2021-03-11 14:35:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,245 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:29,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:29,258 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:29,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:29,269 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:29,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:29,284 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:29,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:29,304 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:29,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851849782] [2021-03-11 14:35:29,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:29,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284121101] [2021-03-11 14:35:29,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:29,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:29,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:29,324 INFO L87 Difference]: Start difference. First operand 152 states and 418 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,382 INFO L93 Difference]: Finished difference Result 187 states and 472 transitions. [2021-03-11 14:35:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:29,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,382 INFO L225 Difference]: With dead ends: 187 [2021-03-11 14:35:29,382 INFO L226 Difference]: Without dead ends: 170 [2021-03-11 14:35:29,382 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-03-11 14:35:29,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 147. [2021-03-11 14:35:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.808219178082192) internal successors, (410), 146 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 410 transitions. [2021-03-11 14:35:29,384 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 410 transitions. Word has length 19 [2021-03-11 14:35:29,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,384 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 410 transitions. [2021-03-11 14:35:29,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,384 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 410 transitions. [2021-03-11 14:35:29,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:29,385 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,385 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2021-03-11 14:35:29,385 INFO L428 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,385 INFO L82 PathProgramCache]: Analyzing trace with hash 915076246, now seen corresponding path program 457 times [2021-03-11 14:35:29,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85071595] [2021-03-11 14:35:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:29,403 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:29,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:29,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:29,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:29,450 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:29,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:29,470 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:29,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85071595] [2021-03-11 14:35:29,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:29,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270935947] [2021-03-11 14:35:29,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:29,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:29,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:29,491 INFO L87 Difference]: Start difference. First operand 147 states and 410 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,560 INFO L93 Difference]: Finished difference Result 246 states and 578 transitions. [2021-03-11 14:35:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:29,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,560 INFO L225 Difference]: With dead ends: 246 [2021-03-11 14:35:29,560 INFO L226 Difference]: Without dead ends: 232 [2021-03-11 14:35:29,561 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-03-11 14:35:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 151. [2021-03-11 14:35:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.8) internal successors, (420), 150 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 420 transitions. [2021-03-11 14:35:29,563 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 420 transitions. Word has length 19 [2021-03-11 14:35:29,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,563 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 420 transitions. [2021-03-11 14:35:29,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 420 transitions. [2021-03-11 14:35:29,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:29,563 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,563 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2021-03-11 14:35:29,563 INFO L428 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,563 INFO L82 PathProgramCache]: Analyzing trace with hash 40740920, now seen corresponding path program 458 times [2021-03-11 14:35:29,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45857954] [2021-03-11 14:35:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:29,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:29,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:29,604 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:29,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:29,631 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:29,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:29,651 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:29,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45857954] [2021-03-11 14:35:29,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:29,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69947158] [2021-03-11 14:35:29,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:29,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:29,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:29,671 INFO L87 Difference]: Start difference. First operand 151 states and 420 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,740 INFO L93 Difference]: Finished difference Result 242 states and 567 transitions. [2021-03-11 14:35:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:29,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,740 INFO L225 Difference]: With dead ends: 242 [2021-03-11 14:35:29,740 INFO L226 Difference]: Without dead ends: 230 [2021-03-11 14:35:29,741 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-03-11 14:35:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 149. [2021-03-11 14:35:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.810810810810811) internal successors, (416), 148 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 416 transitions. [2021-03-11 14:35:29,742 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 416 transitions. Word has length 19 [2021-03-11 14:35:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,743 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 416 transitions. [2021-03-11 14:35:29,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,743 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 416 transitions. [2021-03-11 14:35:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:29,743 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,743 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2021-03-11 14:35:29,743 INFO L428 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,743 INFO L82 PathProgramCache]: Analyzing trace with hash 2076098360, now seen corresponding path program 459 times [2021-03-11 14:35:29,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546208688] [2021-03-11 14:35:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:29,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:29,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:29,780 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:29,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:29,803 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:29,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:29,823 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:29,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546208688] [2021-03-11 14:35:29,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:29,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371376274] [2021-03-11 14:35:29,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:29,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:29,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:29,844 INFO L87 Difference]: Start difference. First operand 149 states and 416 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,907 INFO L93 Difference]: Finished difference Result 246 states and 577 transitions. [2021-03-11 14:35:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:29,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,907 INFO L225 Difference]: With dead ends: 246 [2021-03-11 14:35:29,907 INFO L226 Difference]: Without dead ends: 232 [2021-03-11 14:35:29,907 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-03-11 14:35:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 151. [2021-03-11 14:35:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.7933333333333334) internal successors, (419), 150 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 419 transitions. [2021-03-11 14:35:29,909 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 419 transitions. Word has length 19 [2021-03-11 14:35:29,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,910 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 419 transitions. [2021-03-11 14:35:29,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,910 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 419 transitions. [2021-03-11 14:35:29,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:29,910 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,912 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2021-03-11 14:35:29,912 INFO L428 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1098739106, now seen corresponding path program 460 times [2021-03-11 14:35:29,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036493367] [2021-03-11 14:35:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:29,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:29,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:29,949 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:29,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:29,973 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:29,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:29,994 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:29,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036493367] [2021-03-11 14:35:30,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:30,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923354031] [2021-03-11 14:35:30,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:30,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:30,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:30,014 INFO L87 Difference]: Start difference. First operand 151 states and 419 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,062 INFO L93 Difference]: Finished difference Result 242 states and 566 transitions. [2021-03-11 14:35:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:30,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,063 INFO L225 Difference]: With dead ends: 242 [2021-03-11 14:35:30,063 INFO L226 Difference]: Without dead ends: 230 [2021-03-11 14:35:30,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-03-11 14:35:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 149. [2021-03-11 14:35:30,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.804054054054054) internal successors, (415), 148 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 415 transitions. [2021-03-11 14:35:30,065 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 415 transitions. Word has length 19 [2021-03-11 14:35:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,065 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 415 transitions. [2021-03-11 14:35:30,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 415 transitions. [2021-03-11 14:35:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:30,065 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,065 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2021-03-11 14:35:30,065 INFO L428 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,065 INFO L82 PathProgramCache]: Analyzing trace with hash -321241190, now seen corresponding path program 461 times [2021-03-11 14:35:30,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383051766] [2021-03-11 14:35:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:30,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:30,103 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:30,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:30,119 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:30,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:30,139 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:30,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383051766] [2021-03-11 14:35:30,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:30,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808154073] [2021-03-11 14:35:30,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:30,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:30,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:30,160 INFO L87 Difference]: Start difference. First operand 149 states and 415 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,226 INFO L93 Difference]: Finished difference Result 237 states and 555 transitions. [2021-03-11 14:35:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:30,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,227 INFO L225 Difference]: With dead ends: 237 [2021-03-11 14:35:30,227 INFO L226 Difference]: Without dead ends: 227 [2021-03-11 14:35:30,227 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-03-11 14:35:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 150. [2021-03-11 14:35:30,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.791946308724832) internal successors, (416), 149 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2021-03-11 14:35:30,230 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 19 [2021-03-11 14:35:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,230 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2021-03-11 14:35:30,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,230 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2021-03-11 14:35:30,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:30,230 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,230 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2021-03-11 14:35:30,230 INFO L428 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,230 INFO L82 PathProgramCache]: Analyzing trace with hash -560883528, now seen corresponding path program 462 times [2021-03-11 14:35:30,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673043849] [2021-03-11 14:35:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:30,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:30,268 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:30,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:30,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:30,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:30,305 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:30,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673043849] [2021-03-11 14:35:30,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:30,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924290147] [2021-03-11 14:35:30,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:30,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:30,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:30,325 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,374 INFO L93 Difference]: Finished difference Result 237 states and 554 transitions. [2021-03-11 14:35:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:30,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,374 INFO L225 Difference]: With dead ends: 237 [2021-03-11 14:35:30,374 INFO L226 Difference]: Without dead ends: 225 [2021-03-11 14:35:30,375 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-03-11 14:35:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 148. [2021-03-11 14:35:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.8095238095238093) internal successors, (413), 147 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 413 transitions. [2021-03-11 14:35:30,376 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 413 transitions. Word has length 19 [2021-03-11 14:35:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,377 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 413 transitions. [2021-03-11 14:35:30,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 413 transitions. [2021-03-11 14:35:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:30,377 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,377 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2021-03-11 14:35:30,377 INFO L428 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash -685361608, now seen corresponding path program 463 times [2021-03-11 14:35:30,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026771390] [2021-03-11 14:35:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:30,404 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:30,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:30,431 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:30,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:30,451 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:30,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026771390] [2021-03-11 14:35:30,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:30,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141742509] [2021-03-11 14:35:30,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:30,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:30,471 INFO L87 Difference]: Start difference. First operand 148 states and 413 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,538 INFO L93 Difference]: Finished difference Result 246 states and 577 transitions. [2021-03-11 14:35:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:30,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,539 INFO L225 Difference]: With dead ends: 246 [2021-03-11 14:35:30,539 INFO L226 Difference]: Without dead ends: 232 [2021-03-11 14:35:30,539 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-03-11 14:35:30,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 152. [2021-03-11 14:35:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.801324503311258) internal successors, (423), 151 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 423 transitions. [2021-03-11 14:35:30,541 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 423 transitions. Word has length 19 [2021-03-11 14:35:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,541 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 423 transitions. [2021-03-11 14:35:30,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 423 transitions. [2021-03-11 14:35:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:30,541 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,541 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-03-11 14:35:30,542 INFO L428 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1559696934, now seen corresponding path program 464 times [2021-03-11 14:35:30,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776100911] [2021-03-11 14:35:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:30,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:30,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:30,596 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:30,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:30,616 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:30,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776100911] [2021-03-11 14:35:30,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:30,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851482097] [2021-03-11 14:35:30,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:30,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:30,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:30,636 INFO L87 Difference]: Start difference. First operand 152 states and 423 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,703 INFO L93 Difference]: Finished difference Result 242 states and 566 transitions. [2021-03-11 14:35:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:30,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:30,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,704 INFO L225 Difference]: With dead ends: 242 [2021-03-11 14:35:30,704 INFO L226 Difference]: Without dead ends: 230 [2021-03-11 14:35:30,704 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-03-11 14:35:30,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 150. [2021-03-11 14:35:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8053691275167787) internal successors, (418), 149 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2021-03-11 14:35:30,706 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 19 [2021-03-11 14:35:30,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,706 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2021-03-11 14:35:30,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2021-03-11 14:35:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:30,706 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,706 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-03-11 14:35:30,706 INFO L428 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,706 INFO L82 PathProgramCache]: Analyzing trace with hash 793540284, now seen corresponding path program 465 times [2021-03-11 14:35:30,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832303242] [2021-03-11 14:35:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:30,736 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:30,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:30,752 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:30,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:30,772 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:30,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832303242] [2021-03-11 14:35:30,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:30,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589266228] [2021-03-11 14:35:30,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:30,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:30,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:30,792 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,852 INFO L93 Difference]: Finished difference Result 244 states and 575 transitions. [2021-03-11 14:35:30,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:30,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,853 INFO L225 Difference]: With dead ends: 244 [2021-03-11 14:35:30,853 INFO L226 Difference]: Without dead ends: 230 [2021-03-11 14:35:30,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-03-11 14:35:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 154. [2021-03-11 14:35:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.784313725490196) internal successors, (426), 153 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 426 transitions. [2021-03-11 14:35:30,855 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 426 transitions. Word has length 19 [2021-03-11 14:35:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,855 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 426 transitions. [2021-03-11 14:35:30,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 426 transitions. [2021-03-11 14:35:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:30,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,856 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-03-11 14:35:30,856 INFO L428 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,856 INFO L82 PathProgramCache]: Analyzing trace with hash 48243140, now seen corresponding path program 466 times [2021-03-11 14:35:30,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917364805] [2021-03-11 14:35:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:30,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:30,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:30,900 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:30,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:30,921 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:30,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917364805] [2021-03-11 14:35:30,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:30,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182383909] [2021-03-11 14:35:30,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:30,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:30,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:30,941 INFO L87 Difference]: Start difference. First operand 154 states and 426 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,004 INFO L93 Difference]: Finished difference Result 233 states and 558 transitions. [2021-03-11 14:35:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:31,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,004 INFO L225 Difference]: With dead ends: 233 [2021-03-11 14:35:31,004 INFO L226 Difference]: Without dead ends: 217 [2021-03-11 14:35:31,005 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-03-11 14:35:31,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 150. [2021-03-11 14:35:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.791946308724832) internal successors, (416), 149 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2021-03-11 14:35:31,007 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 19 [2021-03-11 14:35:31,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,007 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2021-03-11 14:35:31,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2021-03-11 14:35:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:31,007 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,007 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2021-03-11 14:35:31,007 INFO L428 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2141654844, now seen corresponding path program 467 times [2021-03-11 14:35:31,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876557791] [2021-03-11 14:35:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:31,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:31,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:31,050 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:31,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:31,071 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:31,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876557791] [2021-03-11 14:35:31,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:31,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370152768] [2021-03-11 14:35:31,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:31,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:31,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:31,091 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,153 INFO L93 Difference]: Finished difference Result 238 states and 557 transitions. [2021-03-11 14:35:31,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:31,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:31,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,154 INFO L225 Difference]: With dead ends: 238 [2021-03-11 14:35:31,154 INFO L226 Difference]: Without dead ends: 228 [2021-03-11 14:35:31,154 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-03-11 14:35:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 152. [2021-03-11 14:35:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.774834437086093) internal successors, (419), 151 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 419 transitions. [2021-03-11 14:35:31,156 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 419 transitions. Word has length 19 [2021-03-11 14:35:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,156 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 419 transitions. [2021-03-11 14:35:31,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 419 transitions. [2021-03-11 14:35:31,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:31,156 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,156 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2021-03-11 14:35:31,157 INFO L428 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,157 INFO L82 PathProgramCache]: Analyzing trace with hash -431041536, now seen corresponding path program 468 times [2021-03-11 14:35:31,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829735807] [2021-03-11 14:35:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:31,184 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:31,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:31,200 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:31,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:31,220 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:31,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829735807] [2021-03-11 14:35:31,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:31,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274221465] [2021-03-11 14:35:31,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:31,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:31,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:31,240 INFO L87 Difference]: Start difference. First operand 152 states and 419 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,303 INFO L93 Difference]: Finished difference Result 231 states and 551 transitions. [2021-03-11 14:35:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:31,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,304 INFO L225 Difference]: With dead ends: 231 [2021-03-11 14:35:31,304 INFO L226 Difference]: Without dead ends: 215 [2021-03-11 14:35:31,304 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-03-11 14:35:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 148. [2021-03-11 14:35:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.802721088435374) internal successors, (412), 147 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 412 transitions. [2021-03-11 14:35:31,306 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 412 transitions. Word has length 19 [2021-03-11 14:35:31,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,306 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 412 transitions. [2021-03-11 14:35:31,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 412 transitions. [2021-03-11 14:35:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:31,306 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,306 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2021-03-11 14:35:31,306 INFO L428 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1124777348, now seen corresponding path program 469 times [2021-03-11 14:35:31,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054933455] [2021-03-11 14:35:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:31,334 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:31,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:31,358 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:31,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:31,378 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:31,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054933455] [2021-03-11 14:35:31,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:31,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432756651] [2021-03-11 14:35:31,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:31,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:31,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:31,398 INFO L87 Difference]: Start difference. First operand 148 states and 412 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,458 INFO L93 Difference]: Finished difference Result 236 states and 552 transitions. [2021-03-11 14:35:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:31,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:31,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,459 INFO L225 Difference]: With dead ends: 236 [2021-03-11 14:35:31,459 INFO L226 Difference]: Without dead ends: 222 [2021-03-11 14:35:31,459 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-11 14:35:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 152. [2021-03-11 14:35:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.794701986754967) internal successors, (422), 151 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 422 transitions. [2021-03-11 14:35:31,461 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 422 transitions. Word has length 19 [2021-03-11 14:35:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,461 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 422 transitions. [2021-03-11 14:35:31,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,461 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 422 transitions. [2021-03-11 14:35:31,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:31,461 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,461 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2021-03-11 14:35:31,461 INFO L428 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,461 INFO L82 PathProgramCache]: Analyzing trace with hash -4647518, now seen corresponding path program 470 times [2021-03-11 14:35:31,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366688584] [2021-03-11 14:35:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:31,489 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:31,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:31,513 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:31,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:31,534 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:31,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366688584] [2021-03-11 14:35:31,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:31,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594697151] [2021-03-11 14:35:31,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:31,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:31,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:31,554 INFO L87 Difference]: Start difference. First operand 152 states and 422 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,605 INFO L93 Difference]: Finished difference Result 232 states and 541 transitions. [2021-03-11 14:35:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:31,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:31,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,606 INFO L225 Difference]: With dead ends: 232 [2021-03-11 14:35:31,606 INFO L226 Difference]: Without dead ends: 220 [2021-03-11 14:35:31,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-03-11 14:35:31,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 150. [2021-03-11 14:35:31,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.7986577181208054) internal successors, (417), 149 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 417 transitions. [2021-03-11 14:35:31,608 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 417 transitions. Word has length 19 [2021-03-11 14:35:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,608 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 417 transitions. [2021-03-11 14:35:31,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,608 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 417 transitions. [2021-03-11 14:35:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:31,608 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,608 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2021-03-11 14:35:31,608 INFO L428 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,608 INFO L82 PathProgramCache]: Analyzing trace with hash 486163610, now seen corresponding path program 471 times [2021-03-11 14:35:31,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249148215] [2021-03-11 14:35:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:31,635 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:31,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:31,650 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:31,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:31,671 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:31,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:31,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249148215] [2021-03-11 14:35:31,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:31,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396633937] [2021-03-11 14:35:31,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:31,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:31,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:31,691 INFO L87 Difference]: Start difference. First operand 150 states and 417 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,758 INFO L93 Difference]: Finished difference Result 230 states and 538 transitions. [2021-03-11 14:35:31,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:31,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:31,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,758 INFO L225 Difference]: With dead ends: 230 [2021-03-11 14:35:31,758 INFO L226 Difference]: Without dead ends: 216 [2021-03-11 14:35:31,759 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-03-11 14:35:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 154. [2021-03-11 14:35:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.7777777777777777) internal successors, (425), 153 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 425 transitions. [2021-03-11 14:35:31,760 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 425 transitions. Word has length 19 [2021-03-11 14:35:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,761 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 425 transitions. [2021-03-11 14:35:31,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 425 transitions. [2021-03-11 14:35:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:31,761 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,761 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474 [2021-03-11 14:35:31,761 INFO L428 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1680190306, now seen corresponding path program 472 times [2021-03-11 14:35:31,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368870888] [2021-03-11 14:35:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:31,788 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:31,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:31,803 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:31,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:31,824 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:31,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368870888] [2021-03-11 14:35:31,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:31,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114900607] [2021-03-11 14:35:31,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:31,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:31,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:31,844 INFO L87 Difference]: Start difference. First operand 154 states and 425 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,910 INFO L93 Difference]: Finished difference Result 219 states and 521 transitions. [2021-03-11 14:35:31,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:31,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,911 INFO L225 Difference]: With dead ends: 219 [2021-03-11 14:35:31,911 INFO L226 Difference]: Without dead ends: 203 [2021-03-11 14:35:31,911 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-03-11 14:35:31,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 150. [2021-03-11 14:35:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.785234899328859) internal successors, (415), 149 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 415 transitions. [2021-03-11 14:35:31,913 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 415 transitions. Word has length 19 [2021-03-11 14:35:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,913 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 415 transitions. [2021-03-11 14:35:31,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 415 transitions. [2021-03-11 14:35:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:31,913 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,913 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable475 [2021-03-11 14:35:31,913 INFO L428 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,914 INFO L82 PathProgramCache]: Analyzing trace with hash -539877320, now seen corresponding path program 473 times [2021-03-11 14:35:31,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942108397] [2021-03-11 14:35:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:31,941 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:31,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:31,957 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:31,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:31,978 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:31,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942108397] [2021-03-11 14:35:31,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:31,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132763165] [2021-03-11 14:35:31,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:31,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:31,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:31,998 INFO L87 Difference]: Start difference. First operand 150 states and 415 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,045 INFO L93 Difference]: Finished difference Result 215 states and 511 transitions. [2021-03-11 14:35:32,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:32,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,046 INFO L225 Difference]: With dead ends: 215 [2021-03-11 14:35:32,046 INFO L226 Difference]: Without dead ends: 205 [2021-03-11 14:35:32,046 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-03-11 14:35:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 152. [2021-03-11 14:35:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.7682119205298013) internal successors, (418), 151 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 418 transitions. [2021-03-11 14:35:32,048 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 418 transitions. Word has length 19 [2021-03-11 14:35:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,048 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 418 transitions. [2021-03-11 14:35:32,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 418 transitions. [2021-03-11 14:35:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:32,048 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,048 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable476 [2021-03-11 14:35:32,048 INFO L428 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,048 INFO L82 PathProgramCache]: Analyzing trace with hash 204825178, now seen corresponding path program 474 times [2021-03-11 14:35:32,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535408431] [2021-03-11 14:35:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:32,076 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:32,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:32,092 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:32,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:32,112 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:32,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535408431] [2021-03-11 14:35:32,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:32,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507379880] [2021-03-11 14:35:32,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:32,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:32,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:32,133 INFO L87 Difference]: Start difference. First operand 152 states and 418 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,206 INFO L93 Difference]: Finished difference Result 204 states and 497 transitions. [2021-03-11 14:35:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:32,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,207 INFO L225 Difference]: With dead ends: 204 [2021-03-11 14:35:32,207 INFO L226 Difference]: Without dead ends: 188 [2021-03-11 14:35:32,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-03-11 14:35:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 148. [2021-03-11 14:35:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.795918367346939) internal successors, (411), 147 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 411 transitions. [2021-03-11 14:35:32,209 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 411 transitions. Word has length 19 [2021-03-11 14:35:32,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,209 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 411 transitions. [2021-03-11 14:35:32,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 411 transitions. [2021-03-11 14:35:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:32,209 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,209 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable477 [2021-03-11 14:35:32,209 INFO L428 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,210 INFO L82 PathProgramCache]: Analyzing trace with hash 266504132, now seen corresponding path program 475 times [2021-03-11 14:35:32,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394716706] [2021-03-11 14:35:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,227 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:32,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:32,238 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:32,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:32,255 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:32,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:32,275 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:32,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394716706] [2021-03-11 14:35:32,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:32,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010856197] [2021-03-11 14:35:32,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:32,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:32,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:32,295 INFO L87 Difference]: Start difference. First operand 148 states and 411 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,359 INFO L93 Difference]: Finished difference Result 213 states and 507 transitions. [2021-03-11 14:35:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:32,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:32,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,360 INFO L225 Difference]: With dead ends: 213 [2021-03-11 14:35:32,360 INFO L226 Difference]: Without dead ends: 203 [2021-03-11 14:35:32,360 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-03-11 14:35:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 150. [2021-03-11 14:35:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.785234899328859) internal successors, (415), 149 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 415 transitions. [2021-03-11 14:35:32,362 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 415 transitions. Word has length 19 [2021-03-11 14:35:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,362 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 415 transitions. [2021-03-11 14:35:32,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 415 transitions. [2021-03-11 14:35:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:32,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,362 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478 [2021-03-11 14:35:32,362 INFO L428 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,362 INFO L82 PathProgramCache]: Analyzing trace with hash 26861794, now seen corresponding path program 476 times [2021-03-11 14:35:32,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094306783] [2021-03-11 14:35:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,383 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:32,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:32,395 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:32,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:32,410 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:32,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:32,431 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:32,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094306783] [2021-03-11 14:35:32,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:32,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506753981] [2021-03-11 14:35:32,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:32,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:32,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:32,451 INFO L87 Difference]: Start difference. First operand 150 states and 415 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,499 INFO L93 Difference]: Finished difference Result 213 states and 506 transitions. [2021-03-11 14:35:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,499 INFO L225 Difference]: With dead ends: 213 [2021-03-11 14:35:32,499 INFO L226 Difference]: Without dead ends: 202 [2021-03-11 14:35:32,500 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-03-11 14:35:32,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-03-11 14:35:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.7905405405405403) internal successors, (413), 148 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 413 transitions. [2021-03-11 14:35:32,501 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 413 transitions. Word has length 19 [2021-03-11 14:35:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,502 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 413 transitions. [2021-03-11 14:35:32,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,502 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 413 transitions. [2021-03-11 14:35:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:32,502 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,502 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479 [2021-03-11 14:35:32,502 INFO L428 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1877445090, now seen corresponding path program 477 times [2021-03-11 14:35:32,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123998328] [2021-03-11 14:35:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,519 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:32,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:32,531 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:32,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:32,546 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:32,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:32,567 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:32,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123998328] [2021-03-11 14:35:32,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:32,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841457451] [2021-03-11 14:35:32,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:32,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:32,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:32,588 INFO L87 Difference]: Start difference. First operand 149 states and 413 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,652 INFO L93 Difference]: Finished difference Result 210 states and 501 transitions. [2021-03-11 14:35:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:32,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,653 INFO L225 Difference]: With dead ends: 210 [2021-03-11 14:35:32,653 INFO L226 Difference]: Without dead ends: 200 [2021-03-11 14:35:32,653 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-03-11 14:35:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 151. [2021-03-11 14:35:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.7733333333333334) internal successors, (416), 150 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 416 transitions. [2021-03-11 14:35:32,655 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 416 transitions. Word has length 19 [2021-03-11 14:35:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,655 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 416 transitions. [2021-03-11 14:35:32,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 416 transitions. [2021-03-11 14:35:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:32,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480 [2021-03-11 14:35:32,655 INFO L428 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1232414942, now seen corresponding path program 478 times [2021-03-11 14:35:32,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122004318] [2021-03-11 14:35:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,672 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:32,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:32,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:32,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:32,699 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:32,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:32,720 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:32,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122004318] [2021-03-11 14:35:32,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:32,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82646628] [2021-03-11 14:35:32,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:32,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:32,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:32,740 INFO L87 Difference]: Start difference. First operand 151 states and 416 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,805 INFO L93 Difference]: Finished difference Result 203 states and 495 transitions. [2021-03-11 14:35:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:32,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:32,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,806 INFO L225 Difference]: With dead ends: 203 [2021-03-11 14:35:32,806 INFO L226 Difference]: Without dead ends: 189 [2021-03-11 14:35:32,806 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-03-11 14:35:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 149. [2021-03-11 14:35:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.7837837837837838) internal successors, (412), 148 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 412 transitions. [2021-03-11 14:35:32,808 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 412 transitions. Word has length 19 [2021-03-11 14:35:32,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,808 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 412 transitions. [2021-03-11 14:35:32,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 412 transitions. [2021-03-11 14:35:32,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:32,808 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,809 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481 [2021-03-11 14:35:32,809 INFO L428 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1046223586, now seen corresponding path program 479 times [2021-03-11 14:35:32,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699951972] [2021-03-11 14:35:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,829 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:32,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:32,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:32,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:32,861 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:32,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:32,889 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:32,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699951972] [2021-03-11 14:35:32,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:32,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502234167] [2021-03-11 14:35:32,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:32,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:32,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:32,917 INFO L87 Difference]: Start difference. First operand 149 states and 412 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,972 INFO L93 Difference]: Finished difference Result 197 states and 483 transitions. [2021-03-11 14:35:32,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:32,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:32,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,973 INFO L225 Difference]: With dead ends: 197 [2021-03-11 14:35:32,973 INFO L226 Difference]: Without dead ends: 187 [2021-03-11 14:35:32,973 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-03-11 14:35:32,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 151. [2021-03-11 14:35:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.7666666666666666) internal successors, (415), 150 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 415 transitions. [2021-03-11 14:35:32,975 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 415 transitions. Word has length 19 [2021-03-11 14:35:32,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,975 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 415 transitions. [2021-03-11 14:35:32,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 415 transitions. [2021-03-11 14:35:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:32,975 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,975 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482 [2021-03-11 14:35:32,976 INFO L428 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,976 INFO L82 PathProgramCache]: Analyzing trace with hash -301521088, now seen corresponding path program 480 times [2021-03-11 14:35:32,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122205369] [2021-03-11 14:35:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,993 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:32,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:33,004 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,020 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:33,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:33,040 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:33,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122205369] [2021-03-11 14:35:33,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:33,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225512864] [2021-03-11 14:35:33,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:33,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:33,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:33,060 INFO L87 Difference]: Start difference. First operand 151 states and 415 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,121 INFO L93 Difference]: Finished difference Result 186 states and 469 transitions. [2021-03-11 14:35:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:33,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,122 INFO L225 Difference]: With dead ends: 186 [2021-03-11 14:35:33,122 INFO L226 Difference]: Without dead ends: 167 [2021-03-11 14:35:33,122 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-03-11 14:35:33,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 144. [2021-03-11 14:35:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.825174825174825) internal successors, (404), 143 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 404 transitions. [2021-03-11 14:35:33,124 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 404 transitions. Word has length 19 [2021-03-11 14:35:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,124 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 404 transitions. [2021-03-11 14:35:33,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 404 transitions. [2021-03-11 14:35:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:33,124 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,124 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2021-03-11 14:35:33,124 INFO L428 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,125 INFO L82 PathProgramCache]: Analyzing trace with hash -700822424, now seen corresponding path program 481 times [2021-03-11 14:35:33,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029441843] [2021-03-11 14:35:33,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:33,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:33,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,169 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:33,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:33,197 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:33,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:33,217 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:33,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029441843] [2021-03-11 14:35:33,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:33,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913550171] [2021-03-11 14:35:33,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:33,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:33,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:33,238 INFO L87 Difference]: Start difference. First operand 144 states and 404 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,287 INFO L93 Difference]: Finished difference Result 244 states and 560 transitions. [2021-03-11 14:35:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:33,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:33,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,288 INFO L225 Difference]: With dead ends: 244 [2021-03-11 14:35:33,288 INFO L226 Difference]: Without dead ends: 228 [2021-03-11 14:35:33,288 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-03-11 14:35:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2021-03-11 14:35:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.7972972972972974) internal successors, (414), 148 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 414 transitions. [2021-03-11 14:35:33,290 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 414 transitions. Word has length 19 [2021-03-11 14:35:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,290 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 414 transitions. [2021-03-11 14:35:33,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 414 transitions. [2021-03-11 14:35:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:33,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484 [2021-03-11 14:35:33,290 INFO L428 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1442418326, now seen corresponding path program 482 times [2021-03-11 14:35:33,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962003381] [2021-03-11 14:35:33,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:33,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:33,319 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,343 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:33,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:33,370 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:33,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:33,391 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:33,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962003381] [2021-03-11 14:35:33,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:33,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920761805] [2021-03-11 14:35:33,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:33,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:33,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:33,411 INFO L87 Difference]: Start difference. First operand 149 states and 414 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,470 INFO L93 Difference]: Finished difference Result 238 states and 545 transitions. [2021-03-11 14:35:33,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:33,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:33,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,471 INFO L225 Difference]: With dead ends: 238 [2021-03-11 14:35:33,471 INFO L226 Difference]: Without dead ends: 225 [2021-03-11 14:35:33,471 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 140.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-03-11 14:35:33,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 146. [2021-03-11 14:35:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.8137931034482757) internal successors, (408), 145 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 408 transitions. [2021-03-11 14:35:33,473 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 408 transitions. Word has length 19 [2021-03-11 14:35:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,473 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 408 transitions. [2021-03-11 14:35:33,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,473 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 408 transitions. [2021-03-11 14:35:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:33,473 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,473 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485 [2021-03-11 14:35:33,473 INFO L428 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1993707018, now seen corresponding path program 483 times [2021-03-11 14:35:33,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788131983] [2021-03-11 14:35:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:33,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:33,501 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,521 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:33,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:33,544 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:33,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:33,564 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:33,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788131983] [2021-03-11 14:35:33,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:33,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234923720] [2021-03-11 14:35:33,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:33,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:33,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:33,585 INFO L87 Difference]: Start difference. First operand 146 states and 408 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,634 INFO L93 Difference]: Finished difference Result 244 states and 558 transitions. [2021-03-11 14:35:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:33,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,635 INFO L225 Difference]: With dead ends: 244 [2021-03-11 14:35:33,635 INFO L226 Difference]: Without dead ends: 228 [2021-03-11 14:35:33,635 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-03-11 14:35:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2021-03-11 14:35:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.7837837837837838) internal successors, (412), 148 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 412 transitions. [2021-03-11 14:35:33,639 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 412 transitions. Word has length 19 [2021-03-11 14:35:33,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,639 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 412 transitions. [2021-03-11 14:35:33,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 412 transitions. [2021-03-11 14:35:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:33,639 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,639 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable486 [2021-03-11 14:35:33,640 INFO L428 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2042202052, now seen corresponding path program 484 times [2021-03-11 14:35:33,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750164181] [2021-03-11 14:35:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:33,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:33,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,685 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:33,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:33,707 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:33,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:33,728 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:33,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750164181] [2021-03-11 14:35:33,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:33,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301535407] [2021-03-11 14:35:33,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:33,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:33,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:33,748 INFO L87 Difference]: Start difference. First operand 149 states and 412 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,800 INFO L93 Difference]: Finished difference Result 238 states and 543 transitions. [2021-03-11 14:35:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:33,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,800 INFO L225 Difference]: With dead ends: 238 [2021-03-11 14:35:33,800 INFO L226 Difference]: Without dead ends: 225 [2021-03-11 14:35:33,800 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-03-11 14:35:33,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 146. [2021-03-11 14:35:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.8) internal successors, (406), 145 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 406 transitions. [2021-03-11 14:35:33,802 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 406 transitions. Word has length 19 [2021-03-11 14:35:33,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,802 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 406 transitions. [2021-03-11 14:35:33,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 406 transitions. [2021-03-11 14:35:33,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:33,803 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,803 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487 [2021-03-11 14:35:33,803 INFO L428 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1012326922, now seen corresponding path program 485 times [2021-03-11 14:35:33,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22788982] [2021-03-11 14:35:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:33,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:33,827 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,848 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:33,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:33,864 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:33,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:33,885 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:33,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22788982] [2021-03-11 14:35:33,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:33,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505871071] [2021-03-11 14:35:33,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:33,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:33,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:33,905 INFO L87 Difference]: Start difference. First operand 146 states and 406 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,965 INFO L93 Difference]: Finished difference Result 230 states and 527 transitions. [2021-03-11 14:35:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:33,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,966 INFO L225 Difference]: With dead ends: 230 [2021-03-11 14:35:33,966 INFO L226 Difference]: Without dead ends: 220 [2021-03-11 14:35:33,966 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-03-11 14:35:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 147. [2021-03-11 14:35:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.787671232876712) internal successors, (407), 146 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 407 transitions. [2021-03-11 14:35:33,968 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 407 transitions. Word has length 19 [2021-03-11 14:35:33,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,968 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 407 transitions. [2021-03-11 14:35:33,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 407 transitions. [2021-03-11 14:35:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:33,968 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,968 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable488 [2021-03-11 14:35:33,968 INFO L428 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,969 INFO L82 PathProgramCache]: Analyzing trace with hash 772684584, now seen corresponding path program 486 times [2021-03-11 14:35:33,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465398362] [2021-03-11 14:35:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:33,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:33,993 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:34,014 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:34,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:34,030 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:34,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:34,051 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:34,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465398362] [2021-03-11 14:35:34,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:34,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642237587] [2021-03-11 14:35:34,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:34,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:34,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:34,071 INFO L87 Difference]: Start difference. First operand 147 states and 407 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,122 INFO L93 Difference]: Finished difference Result 230 states and 526 transitions. [2021-03-11 14:35:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:34,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,122 INFO L225 Difference]: With dead ends: 230 [2021-03-11 14:35:34,122 INFO L226 Difference]: Without dead ends: 217 [2021-03-11 14:35:34,122 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-03-11 14:35:34,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 144. [2021-03-11 14:35:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.8111888111888113) internal successors, (402), 143 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 402 transitions. [2021-03-11 14:35:34,124 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 402 transitions. Word has length 19 [2021-03-11 14:35:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,124 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 402 transitions. [2021-03-11 14:35:34,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 402 transitions. [2021-03-11 14:35:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:34,125 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,125 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489 [2021-03-11 14:35:34,125 INFO L428 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1225211654, now seen corresponding path program 487 times [2021-03-11 14:35:34,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251705414] [2021-03-11 14:35:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,135 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:34,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:34,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:34,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:34,169 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:34,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:34,197 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:34,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:34,218 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:34,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251705414] [2021-03-11 14:35:34,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:34,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084552047] [2021-03-11 14:35:34,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:34,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:34,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:34,238 INFO L87 Difference]: Start difference. First operand 144 states and 402 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,286 INFO L93 Difference]: Finished difference Result 250 states and 577 transitions. [2021-03-11 14:35:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,286 INFO L225 Difference]: With dead ends: 250 [2021-03-11 14:35:34,286 INFO L226 Difference]: Without dead ends: 234 [2021-03-11 14:35:34,287 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-03-11 14:35:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 150. [2021-03-11 14:35:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.791946308724832) internal successors, (416), 149 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2021-03-11 14:35:34,288 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 19 [2021-03-11 14:35:34,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,289 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2021-03-11 14:35:34,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,289 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2021-03-11 14:35:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:34,289 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,289 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490 [2021-03-11 14:35:34,289 INFO L428 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,289 INFO L82 PathProgramCache]: Analyzing trace with hash -926514892, now seen corresponding path program 488 times [2021-03-11 14:35:34,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863682597] [2021-03-11 14:35:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:34,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:34,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:34,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:34,335 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:34,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:34,363 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:34,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:34,384 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:34,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863682597] [2021-03-11 14:35:34,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:34,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936495777] [2021-03-11 14:35:34,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:34,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:34,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:34,404 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,466 INFO L93 Difference]: Finished difference Result 244 states and 562 transitions. [2021-03-11 14:35:34,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:34,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,467 INFO L225 Difference]: With dead ends: 244 [2021-03-11 14:35:34,467 INFO L226 Difference]: Without dead ends: 231 [2021-03-11 14:35:34,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-03-11 14:35:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 147. [2021-03-11 14:35:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.8013698630136985) internal successors, (409), 146 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 409 transitions. [2021-03-11 14:35:34,469 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 409 transitions. Word has length 19 [2021-03-11 14:35:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,469 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 409 transitions. [2021-03-11 14:35:34,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 409 transitions. [2021-03-11 14:35:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:34,470 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,470 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491 [2021-03-11 14:35:34,470 INFO L428 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1975664054, now seen corresponding path program 489 times [2021-03-11 14:35:34,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831313031] [2021-03-11 14:35:34,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:34,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:34,494 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:34,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:34,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:34,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:34,542 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:34,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:34,563 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:34,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831313031] [2021-03-11 14:35:34,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:34,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452876032] [2021-03-11 14:35:34,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:34,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:34,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:34,584 INFO L87 Difference]: Start difference. First operand 147 states and 409 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,633 INFO L93 Difference]: Finished difference Result 254 states and 586 transitions. [2021-03-11 14:35:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:34,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,634 INFO L225 Difference]: With dead ends: 254 [2021-03-11 14:35:34,634 INFO L226 Difference]: Without dead ends: 238 [2021-03-11 14:35:34,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-03-11 14:35:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 152. [2021-03-11 14:35:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.7682119205298013) internal successors, (418), 151 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 418 transitions. [2021-03-11 14:35:34,636 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 418 transitions. Word has length 19 [2021-03-11 14:35:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,636 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 418 transitions. [2021-03-11 14:35:34,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 418 transitions. [2021-03-11 14:35:34,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:34,636 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,636 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492 [2021-03-11 14:35:34,636 INFO L428 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1568241148, now seen corresponding path program 490 times [2021-03-11 14:35:34,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112224675] [2021-03-11 14:35:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:34,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:34,661 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:34,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:34,682 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:34,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:34,710 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:34,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:34,730 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:34,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112224675] [2021-03-11 14:35:34,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:34,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555335991] [2021-03-11 14:35:34,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:34,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:34,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:34,751 INFO L87 Difference]: Start difference. First operand 152 states and 418 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,812 INFO L93 Difference]: Finished difference Result 250 states and 574 transitions. [2021-03-11 14:35:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:34,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,813 INFO L225 Difference]: With dead ends: 250 [2021-03-11 14:35:34,813 INFO L226 Difference]: Without dead ends: 233 [2021-03-11 14:35:34,813 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-03-11 14:35:34,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 147. [2021-03-11 14:35:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.780821917808219) internal successors, (406), 146 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 406 transitions. [2021-03-11 14:35:34,815 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 406 transitions. Word has length 19 [2021-03-11 14:35:34,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,815 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 406 transitions. [2021-03-11 14:35:34,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 406 transitions. [2021-03-11 14:35:34,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:34,816 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,816 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493 [2021-03-11 14:35:34,816 INFO L428 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1566078992, now seen corresponding path program 491 times [2021-03-11 14:35:34,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761966850] [2021-03-11 14:35:34,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:34,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:34,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:34,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:34,861 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:34,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:34,879 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:34,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:34,900 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:34,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761966850] [2021-03-11 14:35:34,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:34,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269805382] [2021-03-11 14:35:34,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:34,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:34,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:34,921 INFO L87 Difference]: Start difference. First operand 147 states and 406 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,985 INFO L93 Difference]: Finished difference Result 239 states and 550 transitions. [2021-03-11 14:35:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:34,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:34,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,986 INFO L225 Difference]: With dead ends: 239 [2021-03-11 14:35:34,986 INFO L226 Difference]: Without dead ends: 229 [2021-03-11 14:35:34,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-03-11 14:35:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 149. [2021-03-11 14:35:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.7635135135135136) internal successors, (409), 148 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 409 transitions. [2021-03-11 14:35:34,988 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 409 transitions. Word has length 19 [2021-03-11 14:35:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,988 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 409 transitions. [2021-03-11 14:35:34,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 409 transitions. [2021-03-11 14:35:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:34,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,988 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable494 [2021-03-11 14:35:34,988 INFO L428 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,989 INFO L82 PathProgramCache]: Analyzing trace with hash 144534316, now seen corresponding path program 492 times [2021-03-11 14:35:34,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852746451] [2021-03-11 14:35:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:34,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:35,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:35,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:35,033 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:35,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:35,048 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:35,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:35,069 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:35,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852746451] [2021-03-11 14:35:35,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:35,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343312816] [2021-03-11 14:35:35,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:35,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:35,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:35,089 INFO L87 Difference]: Start difference. First operand 149 states and 409 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,158 INFO L93 Difference]: Finished difference Result 241 states and 553 transitions. [2021-03-11 14:35:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:35,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:35,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,158 INFO L225 Difference]: With dead ends: 241 [2021-03-11 14:35:35,159 INFO L226 Difference]: Without dead ends: 224 [2021-03-11 14:35:35,159 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-03-11 14:35:35,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 144. [2021-03-11 14:35:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.797202797202797) internal successors, (400), 143 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 400 transitions. [2021-03-11 14:35:35,160 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 400 transitions. Word has length 19 [2021-03-11 14:35:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,161 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 400 transitions. [2021-03-11 14:35:35,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 400 transitions. [2021-03-11 14:35:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:35,161 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,161 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495 [2021-03-11 14:35:35,161 INFO L428 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1550807878, now seen corresponding path program 493 times [2021-03-11 14:35:35,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817292186] [2021-03-11 14:35:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,171 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:35,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:35,186 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:35,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:35,206 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:35,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:35,229 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:35,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:35,250 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:35,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817292186] [2021-03-11 14:35:35,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:35,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062331464] [2021-03-11 14:35:35,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:35,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:35,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:35,270 INFO L87 Difference]: Start difference. First operand 144 states and 400 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,320 INFO L93 Difference]: Finished difference Result 250 states and 575 transitions. [2021-03-11 14:35:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:35,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,320 INFO L225 Difference]: With dead ends: 250 [2021-03-11 14:35:35,320 INFO L226 Difference]: Without dead ends: 234 [2021-03-11 14:35:35,321 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-03-11 14:35:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 150. [2021-03-11 14:35:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.778523489932886) internal successors, (414), 149 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 414 transitions. [2021-03-11 14:35:35,322 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 414 transitions. Word has length 19 [2021-03-11 14:35:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,323 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 414 transitions. [2021-03-11 14:35:35,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 414 transitions. [2021-03-11 14:35:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:35,323 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,323 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable496 [2021-03-11 14:35:35,323 INFO L428 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1809866104, now seen corresponding path program 494 times [2021-03-11 14:35:35,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081547003] [2021-03-11 14:35:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:35,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:35,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:35,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:35,368 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:35,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:35,390 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:35,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:35,411 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:35,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081547003] [2021-03-11 14:35:35,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:35,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616404459] [2021-03-11 14:35:35,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:35,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:35,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:35,431 INFO L87 Difference]: Start difference. First operand 150 states and 414 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,482 INFO L93 Difference]: Finished difference Result 244 states and 560 transitions. [2021-03-11 14:35:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:35,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,483 INFO L225 Difference]: With dead ends: 244 [2021-03-11 14:35:35,483 INFO L226 Difference]: Without dead ends: 231 [2021-03-11 14:35:35,483 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-03-11 14:35:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 147. [2021-03-11 14:35:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.787671232876712) internal successors, (407), 146 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 407 transitions. [2021-03-11 14:35:35,485 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 407 transitions. Word has length 19 [2021-03-11 14:35:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,485 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 407 transitions. [2021-03-11 14:35:35,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 407 transitions. [2021-03-11 14:35:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:35,485 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,485 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable497 [2021-03-11 14:35:35,485 INFO L428 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,485 INFO L82 PathProgramCache]: Analyzing trace with hash -49629976, now seen corresponding path program 495 times [2021-03-11 14:35:35,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225366880] [2021-03-11 14:35:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:35,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:35,509 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:35,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:35,529 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:35,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:35,557 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:35,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:35,578 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:35,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225366880] [2021-03-11 14:35:35,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:35,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430828829] [2021-03-11 14:35:35,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:35,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:35,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:35,598 INFO L87 Difference]: Start difference. First operand 147 states and 407 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,649 INFO L93 Difference]: Finished difference Result 254 states and 584 transitions. [2021-03-11 14:35:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:35,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:35,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,650 INFO L225 Difference]: With dead ends: 254 [2021-03-11 14:35:35,650 INFO L226 Difference]: Without dead ends: 238 [2021-03-11 14:35:35,650 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-03-11 14:35:35,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 152. [2021-03-11 14:35:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.7549668874172184) internal successors, (416), 151 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 416 transitions. [2021-03-11 14:35:35,652 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 416 transitions. Word has length 19 [2021-03-11 14:35:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,652 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 416 transitions. [2021-03-11 14:35:35,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,652 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 416 transitions. [2021-03-11 14:35:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:35,652 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,652 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498 [2021-03-11 14:35:35,653 INFO L428 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash -800692070, now seen corresponding path program 496 times [2021-03-11 14:35:35,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45464952] [2021-03-11 14:35:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:35,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:35,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:35,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:35,697 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:35,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:35,725 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:35,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:35,746 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:35,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45464952] [2021-03-11 14:35:35,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:35,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091485512] [2021-03-11 14:35:35,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:35,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:35,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:35,766 INFO L87 Difference]: Start difference. First operand 152 states and 416 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,834 INFO L93 Difference]: Finished difference Result 250 states and 572 transitions. [2021-03-11 14:35:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:35,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,835 INFO L225 Difference]: With dead ends: 250 [2021-03-11 14:35:35,835 INFO L226 Difference]: Without dead ends: 233 [2021-03-11 14:35:35,835 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-03-11 14:35:35,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 147. [2021-03-11 14:35:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.767123287671233) internal successors, (404), 146 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 404 transitions. [2021-03-11 14:35:35,837 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 404 transitions. Word has length 19 [2021-03-11 14:35:35,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,837 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 404 transitions. [2021-03-11 14:35:35,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 404 transitions. [2021-03-11 14:35:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:35,838 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,838 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable499 [2021-03-11 14:35:35,838 INFO L428 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,838 INFO L82 PathProgramCache]: Analyzing trace with hash 350791652, now seen corresponding path program 497 times [2021-03-11 14:35:35,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875712302] [2021-03-11 14:35:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:35,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:35,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:35,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:35,884 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:35,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:35,899 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:35,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:35,920 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:35,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875712302] [2021-03-11 14:35:35,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:35,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546081833] [2021-03-11 14:35:35,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:35,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:35,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:35,941 INFO L87 Difference]: Start difference. First operand 147 states and 404 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,989 INFO L93 Difference]: Finished difference Result 239 states and 548 transitions. [2021-03-11 14:35:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,990 INFO L225 Difference]: With dead ends: 239 [2021-03-11 14:35:35,990 INFO L226 Difference]: Without dead ends: 229 [2021-03-11 14:35:35,990 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-03-11 14:35:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 149. [2021-03-11 14:35:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.75) internal successors, (407), 148 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 407 transitions. [2021-03-11 14:35:35,992 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 407 transitions. Word has length 19 [2021-03-11 14:35:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,992 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 407 transitions. [2021-03-11 14:35:35,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 407 transitions. [2021-03-11 14:35:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:35,992 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,992 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500 [2021-03-11 14:35:35,992 INFO L428 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1095494150, now seen corresponding path program 498 times [2021-03-11 14:35:35,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111032839] [2021-03-11 14:35:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:36,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:36,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:36,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:36,037 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:36,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:36,052 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:36,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:36,073 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:36,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111032839] [2021-03-11 14:35:36,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:36,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612687787] [2021-03-11 14:35:36,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:36,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:36,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:36,093 INFO L87 Difference]: Start difference. First operand 149 states and 407 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,165 INFO L93 Difference]: Finished difference Result 241 states and 551 transitions. [2021-03-11 14:35:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:36,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:36,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,166 INFO L225 Difference]: With dead ends: 241 [2021-03-11 14:35:36,166 INFO L226 Difference]: Without dead ends: 224 [2021-03-11 14:35:36,166 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-03-11 14:35:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 144. [2021-03-11 14:35:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.7832167832167833) internal successors, (398), 143 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 398 transitions. [2021-03-11 14:35:36,168 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 398 transitions. Word has length 19 [2021-03-11 14:35:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,168 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 398 transitions. [2021-03-11 14:35:36,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 398 transitions. [2021-03-11 14:35:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:36,168 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,168 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable501 [2021-03-11 14:35:36,168 INFO L428 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1269308130, now seen corresponding path program 499 times [2021-03-11 14:35:36,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437314275] [2021-03-11 14:35:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,178 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:36,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:36,192 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:36,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:36,204 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:36,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:36,219 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:36,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:36,240 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:36,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437314275] [2021-03-11 14:35:36,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:36,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697725565] [2021-03-11 14:35:36,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:36,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:36,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:36,260 INFO L87 Difference]: Start difference. First operand 144 states and 398 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,328 INFO L93 Difference]: Finished difference Result 223 states and 511 transitions. [2021-03-11 14:35:36,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:36,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:36,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,329 INFO L225 Difference]: With dead ends: 223 [2021-03-11 14:35:36,329 INFO L226 Difference]: Without dead ends: 213 [2021-03-11 14:35:36,329 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-03-11 14:35:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 146. [2021-03-11 14:35:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.7724137931034485) internal successors, (402), 145 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 402 transitions. [2021-03-11 14:35:36,331 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 402 transitions. Word has length 19 [2021-03-11 14:35:36,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,331 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 402 transitions. [2021-03-11 14:35:36,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 402 transitions. [2021-03-11 14:35:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:36,331 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,331 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502 [2021-03-11 14:35:36,331 INFO L428 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1508950468, now seen corresponding path program 500 times [2021-03-11 14:35:36,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027409600] [2021-03-11 14:35:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,342 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:36,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:36,356 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:36,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:36,368 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:36,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:36,384 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:36,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:36,405 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:36,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027409600] [2021-03-11 14:35:36,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:36,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343788718] [2021-03-11 14:35:36,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:36,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:36,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:36,425 INFO L87 Difference]: Start difference. First operand 146 states and 402 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,478 INFO L93 Difference]: Finished difference Result 223 states and 510 transitions. [2021-03-11 14:35:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:36,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:36,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,479 INFO L225 Difference]: With dead ends: 223 [2021-03-11 14:35:36,479 INFO L226 Difference]: Without dead ends: 212 [2021-03-11 14:35:36,479 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-03-11 14:35:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 145. [2021-03-11 14:35:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 2.7777777777777777) internal successors, (400), 144 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 400 transitions. [2021-03-11 14:35:36,481 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 400 transitions. Word has length 19 [2021-03-11 14:35:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,481 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 400 transitions. [2021-03-11 14:35:36,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 400 transitions. [2021-03-11 14:35:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:36,481 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,481 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503 [2021-03-11 14:35:36,481 INFO L428 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,481 INFO L82 PathProgramCache]: Analyzing trace with hash 341632828, now seen corresponding path program 501 times [2021-03-11 14:35:36,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130723168] [2021-03-11 14:35:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,491 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:36,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:36,505 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:36,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:36,517 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:36,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:36,532 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:36,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:36,553 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:36,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130723168] [2021-03-11 14:35:36,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:36,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794916009] [2021-03-11 14:35:36,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:36,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:36,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:36,573 INFO L87 Difference]: Start difference. First operand 145 states and 400 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,641 INFO L93 Difference]: Finished difference Result 226 states and 518 transitions. [2021-03-11 14:35:36,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:36,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:36,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,642 INFO L225 Difference]: With dead ends: 226 [2021-03-11 14:35:36,642 INFO L226 Difference]: Without dead ends: 216 [2021-03-11 14:35:36,642 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-03-11 14:35:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 147. [2021-03-11 14:35:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.76027397260274) internal successors, (403), 146 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 403 transitions. [2021-03-11 14:35:36,644 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 403 transitions. Word has length 19 [2021-03-11 14:35:36,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,644 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 403 transitions. [2021-03-11 14:35:36,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 403 transitions. [2021-03-11 14:35:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:36,644 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,644 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable504 [2021-03-11 14:35:36,644 INFO L428 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,644 INFO L82 PathProgramCache]: Analyzing trace with hash -303397320, now seen corresponding path program 502 times [2021-03-11 14:35:36,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598235456] [2021-03-11 14:35:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,654 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:36,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:36,668 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:36,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:36,680 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:36,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:36,695 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:36,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:36,716 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:36,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598235456] [2021-03-11 14:35:36,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:36,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654276408] [2021-03-11 14:35:36,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:36,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:36,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:36,736 INFO L87 Difference]: Start difference. First operand 147 states and 403 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,805 INFO L93 Difference]: Finished difference Result 228 states and 521 transitions. [2021-03-11 14:35:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:36,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,806 INFO L225 Difference]: With dead ends: 228 [2021-03-11 14:35:36,806 INFO L226 Difference]: Without dead ends: 214 [2021-03-11 14:35:36,806 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-03-11 14:35:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 145. [2021-03-11 14:35:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 2.7708333333333335) internal successors, (399), 144 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 399 transitions. [2021-03-11 14:35:36,808 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 399 transitions. Word has length 19 [2021-03-11 14:35:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,808 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 399 transitions. [2021-03-11 14:35:36,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 399 transitions. [2021-03-11 14:35:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:36,808 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,808 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505 [2021-03-11 14:35:36,808 INFO L428 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1712931448, now seen corresponding path program 503 times [2021-03-11 14:35:36,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524338443] [2021-03-11 14:35:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:36,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:36,833 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:36,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:36,844 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:36,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:36,860 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:36,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:36,881 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:36,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524338443] [2021-03-11 14:35:36,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:36,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458285424] [2021-03-11 14:35:36,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:36,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:36,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:36,901 INFO L87 Difference]: Start difference. First operand 145 states and 399 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,960 INFO L93 Difference]: Finished difference Result 226 states and 517 transitions. [2021-03-11 14:35:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:36,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,961 INFO L225 Difference]: With dead ends: 226 [2021-03-11 14:35:36,961 INFO L226 Difference]: Without dead ends: 216 [2021-03-11 14:35:36,961 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-03-11 14:35:36,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 147. [2021-03-11 14:35:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.7534246575342465) internal successors, (402), 146 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 402 transitions. [2021-03-11 14:35:36,963 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 402 transitions. Word has length 19 [2021-03-11 14:35:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,963 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 402 transitions. [2021-03-11 14:35:36,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 402 transitions. [2021-03-11 14:35:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:36,964 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,964 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable506 [2021-03-11 14:35:36,964 INFO L428 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1837333350, now seen corresponding path program 504 times [2021-03-11 14:35:36,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876220014] [2021-03-11 14:35:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,976 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:36,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:36,993 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:36,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:37,006 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:37,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:37,026 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:37,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:37,052 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:37,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876220014] [2021-03-11 14:35:37,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:37,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162003371] [2021-03-11 14:35:37,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:37,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:37,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:37,073 INFO L87 Difference]: Start difference. First operand 147 states and 402 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,144 INFO L93 Difference]: Finished difference Result 228 states and 520 transitions. [2021-03-11 14:35:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:37,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,145 INFO L225 Difference]: With dead ends: 228 [2021-03-11 14:35:37,145 INFO L226 Difference]: Without dead ends: 211 [2021-03-11 14:35:37,145 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-03-11 14:35:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 142. [2021-03-11 14:35:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.7943262411347516) internal successors, (394), 141 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 394 transitions. [2021-03-11 14:35:37,147 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 394 transitions. Word has length 19 [2021-03-11 14:35:37,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,147 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 394 transitions. [2021-03-11 14:35:37,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 394 transitions. [2021-03-11 14:35:37,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:37,147 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,147 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507 [2021-03-11 14:35:37,147 INFO L428 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1123308150, now seen corresponding path program 505 times [2021-03-11 14:35:37,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175296366] [2021-03-11 14:35:37,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,165 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:37,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:37,185 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:37,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:37,213 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:37,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:37,234 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:37,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175296366] [2021-03-11 14:35:37,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:37,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024763299] [2021-03-11 14:35:37,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:37,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:37,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:37,254 INFO L87 Difference]: Start difference. First operand 142 states and 394 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,305 INFO L93 Difference]: Finished difference Result 241 states and 546 transitions. [2021-03-11 14:35:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:37,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:37,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,306 INFO L225 Difference]: With dead ends: 241 [2021-03-11 14:35:37,306 INFO L226 Difference]: Without dead ends: 225 [2021-03-11 14:35:37,306 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-03-11 14:35:37,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 145. [2021-03-11 14:35:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 2.763888888888889) internal successors, (398), 144 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 398 transitions. [2021-03-11 14:35:37,308 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 398 transitions. Word has length 19 [2021-03-11 14:35:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,308 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 398 transitions. [2021-03-11 14:35:37,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 398 transitions. [2021-03-11 14:35:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:37,309 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,309 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508 [2021-03-11 14:35:37,309 INFO L428 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1019932600, now seen corresponding path program 506 times [2021-03-11 14:35:37,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397408700] [2021-03-11 14:35:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,326 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:37,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:37,346 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:37,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:37,378 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:37,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:37,399 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:37,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397408700] [2021-03-11 14:35:37,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:37,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623970592] [2021-03-11 14:35:37,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:37,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:37,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:37,419 INFO L87 Difference]: Start difference. First operand 145 states and 398 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,480 INFO L93 Difference]: Finished difference Result 235 states and 531 transitions. [2021-03-11 14:35:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:37,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:37,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,481 INFO L225 Difference]: With dead ends: 235 [2021-03-11 14:35:37,481 INFO L226 Difference]: Without dead ends: 222 [2021-03-11 14:35:37,481 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-11 14:35:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 142. [2021-03-11 14:35:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.780141843971631) internal successors, (392), 141 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 392 transitions. [2021-03-11 14:35:37,482 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 392 transitions. Word has length 19 [2021-03-11 14:35:37,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,483 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 392 transitions. [2021-03-11 14:35:37,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 392 transitions. [2021-03-11 14:35:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:37,483 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,483 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509 [2021-03-11 14:35:37,483 INFO L428 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1571221292, now seen corresponding path program 507 times [2021-03-11 14:35:37,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773402529] [2021-03-11 14:35:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,503 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:37,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:37,524 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:37,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:37,547 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:37,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:37,567 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:37,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773402529] [2021-03-11 14:35:37,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:37,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538169417] [2021-03-11 14:35:37,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:37,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:37,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:37,588 INFO L87 Difference]: Start difference. First operand 142 states and 392 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,635 INFO L93 Difference]: Finished difference Result 241 states and 544 transitions. [2021-03-11 14:35:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,636 INFO L225 Difference]: With dead ends: 241 [2021-03-11 14:35:37,636 INFO L226 Difference]: Without dead ends: 225 [2021-03-11 14:35:37,637 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-03-11 14:35:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 145. [2021-03-11 14:35:37,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 2.75) internal successors, (396), 144 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 396 transitions. [2021-03-11 14:35:37,639 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 396 transitions. Word has length 19 [2021-03-11 14:35:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,639 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 396 transitions. [2021-03-11 14:35:37,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 396 transitions. [2021-03-11 14:35:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:37,640 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,640 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable510 [2021-03-11 14:35:37,640 INFO L428 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1830279518, now seen corresponding path program 508 times [2021-03-11 14:35:37,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700986241] [2021-03-11 14:35:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,665 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:37,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:37,690 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:37,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:37,713 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:37,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:37,733 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700986241] [2021-03-11 14:35:37,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:37,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520397783] [2021-03-11 14:35:37,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:37,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:37,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:37,754 INFO L87 Difference]: Start difference. First operand 145 states and 396 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,811 INFO L93 Difference]: Finished difference Result 235 states and 529 transitions. [2021-03-11 14:35:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:37,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,812 INFO L225 Difference]: With dead ends: 235 [2021-03-11 14:35:37,812 INFO L226 Difference]: Without dead ends: 222 [2021-03-11 14:35:37,812 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-11 14:35:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 142. [2021-03-11 14:35:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.765957446808511) internal successors, (390), 141 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 390 transitions. [2021-03-11 14:35:37,820 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 390 transitions. Word has length 19 [2021-03-11 14:35:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,820 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 390 transitions. [2021-03-11 14:35:37,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 390 transitions. [2021-03-11 14:35:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:37,820 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,820 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable511 [2021-03-11 14:35:37,820 INFO L428 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,821 INFO L82 PathProgramCache]: Analyzing trace with hash 589841196, now seen corresponding path program 509 times [2021-03-11 14:35:37,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988794063] [2021-03-11 14:35:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:37,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:37,867 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:37,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:37,889 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:37,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:37,913 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:37,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988794063] [2021-03-11 14:35:37,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:37,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999872455] [2021-03-11 14:35:37,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:37,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:37,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:37,934 INFO L87 Difference]: Start difference. First operand 142 states and 390 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,995 INFO L93 Difference]: Finished difference Result 227 states and 513 transitions. [2021-03-11 14:35:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:37,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:37,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,996 INFO L225 Difference]: With dead ends: 227 [2021-03-11 14:35:37,996 INFO L226 Difference]: Without dead ends: 217 [2021-03-11 14:35:37,996 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-03-11 14:35:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 143. [2021-03-11 14:35:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.7535211267605635) internal successors, (391), 142 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 391 transitions. [2021-03-11 14:35:37,998 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 391 transitions. Word has length 19 [2021-03-11 14:35:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,999 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 391 transitions. [2021-03-11 14:35:37,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 391 transitions. [2021-03-11 14:35:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:37,999 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,999 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512 [2021-03-11 14:35:37,999 INFO L428 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,999 INFO L82 PathProgramCache]: Analyzing trace with hash 350198858, now seen corresponding path program 510 times [2021-03-11 14:35:37,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527673515] [2021-03-11 14:35:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,016 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:38,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:38,037 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:38,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:38,053 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:38,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:38,074 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:38,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527673515] [2021-03-11 14:35:38,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:38,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428491954] [2021-03-11 14:35:38,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:38,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:38,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:38,094 INFO L87 Difference]: Start difference. First operand 143 states and 391 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,147 INFO L93 Difference]: Finished difference Result 227 states and 512 transitions. [2021-03-11 14:35:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:38,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,148 INFO L225 Difference]: With dead ends: 227 [2021-03-11 14:35:38,148 INFO L226 Difference]: Without dead ends: 214 [2021-03-11 14:35:38,148 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-03-11 14:35:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 140. [2021-03-11 14:35:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.776978417266187) internal successors, (386), 139 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 386 transitions. [2021-03-11 14:35:38,150 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 386 transitions. Word has length 19 [2021-03-11 14:35:38,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,150 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 386 transitions. [2021-03-11 14:35:38,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 386 transitions. [2021-03-11 14:35:38,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:38,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,150 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513 [2021-03-11 14:35:38,150 INFO L428 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1566207290, now seen corresponding path program 511 times [2021-03-11 14:35:38,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173369839] [2021-03-11 14:35:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,198 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:38,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:38,231 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:38,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:38,252 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:38,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173369839] [2021-03-11 14:35:38,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:38,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571324954] [2021-03-11 14:35:38,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:38,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:38,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:38,272 INFO L87 Difference]: Start difference. First operand 140 states and 386 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,319 INFO L93 Difference]: Finished difference Result 246 states and 561 transitions. [2021-03-11 14:35:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:38,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,320 INFO L225 Difference]: With dead ends: 246 [2021-03-11 14:35:38,320 INFO L226 Difference]: Without dead ends: 230 [2021-03-11 14:35:38,320 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-03-11 14:35:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 146. [2021-03-11 14:35:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.7586206896551726) internal successors, (400), 145 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 400 transitions. [2021-03-11 14:35:38,322 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 400 transitions. Word has length 19 [2021-03-11 14:35:38,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,322 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 400 transitions. [2021-03-11 14:35:38,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,322 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 400 transitions. [2021-03-11 14:35:38,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:38,322 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,322 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable514 [2021-03-11 14:35:38,322 INFO L428 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,323 INFO L82 PathProgramCache]: Analyzing trace with hash 577033460, now seen corresponding path program 512 times [2021-03-11 14:35:38,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659704404] [2021-03-11 14:35:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,351 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:38,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:38,378 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:38,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:38,399 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:38,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659704404] [2021-03-11 14:35:38,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:38,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088712436] [2021-03-11 14:35:38,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:38,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:38,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:38,420 INFO L87 Difference]: Start difference. First operand 146 states and 400 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,499 INFO L93 Difference]: Finished difference Result 240 states and 546 transitions. [2021-03-11 14:35:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:38,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:38,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,500 INFO L225 Difference]: With dead ends: 240 [2021-03-11 14:35:38,500 INFO L226 Difference]: Without dead ends: 227 [2021-03-11 14:35:38,500 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-03-11 14:35:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 143. [2021-03-11 14:35:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.767605633802817) internal successors, (393), 142 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 393 transitions. [2021-03-11 14:35:38,502 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 393 transitions. Word has length 19 [2021-03-11 14:35:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,502 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 393 transitions. [2021-03-11 14:35:38,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,502 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 393 transitions. [2021-03-11 14:35:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:38,502 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,502 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515 [2021-03-11 14:35:38,502 INFO L428 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2072553556, now seen corresponding path program 513 times [2021-03-11 14:35:38,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022509542] [2021-03-11 14:35:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,531 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:38,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:38,547 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:38,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:38,568 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:38,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022509542] [2021-03-11 14:35:38,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:38,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795035267] [2021-03-11 14:35:38,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:38,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:38,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:38,589 INFO L87 Difference]: Start difference. First operand 143 states and 393 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,642 INFO L93 Difference]: Finished difference Result 244 states and 560 transitions. [2021-03-11 14:35:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,643 INFO L225 Difference]: With dead ends: 244 [2021-03-11 14:35:38,643 INFO L226 Difference]: Without dead ends: 228 [2021-03-11 14:35:38,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-03-11 14:35:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2021-03-11 14:35:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.72972972972973) internal successors, (404), 148 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 404 transitions. [2021-03-11 14:35:38,645 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 404 transitions. Word has length 19 [2021-03-11 14:35:38,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,645 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 404 transitions. [2021-03-11 14:35:38,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,645 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 404 transitions. [2021-03-11 14:35:38,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:38,645 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,645 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable516 [2021-03-11 14:35:38,646 INFO L428 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1246208990, now seen corresponding path program 514 times [2021-03-11 14:35:38,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093323274] [2021-03-11 14:35:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,674 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:38,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:38,694 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:38,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:38,714 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:38,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093323274] [2021-03-11 14:35:38,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:38,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195037734] [2021-03-11 14:35:38,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:38,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:38,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:38,734 INFO L87 Difference]: Start difference. First operand 149 states and 404 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,801 INFO L93 Difference]: Finished difference Result 232 states and 540 transitions. [2021-03-11 14:35:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,802 INFO L225 Difference]: With dead ends: 232 [2021-03-11 14:35:38,802 INFO L226 Difference]: Without dead ends: 213 [2021-03-11 14:35:38,802 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-03-11 14:35:38,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 143. [2021-03-11 14:35:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.7464788732394365) internal successors, (390), 142 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 390 transitions. [2021-03-11 14:35:38,804 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 390 transitions. Word has length 19 [2021-03-11 14:35:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,804 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 390 transitions. [2021-03-11 14:35:38,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 390 transitions. [2021-03-11 14:35:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:38,804 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,804 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517 [2021-03-11 14:35:38,804 INFO L428 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,805 INFO L82 PathProgramCache]: Analyzing trace with hash 692674962, now seen corresponding path program 515 times [2021-03-11 14:35:38,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738003991] [2021-03-11 14:35:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:38,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:38,847 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:38,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:38,867 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:38,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738003991] [2021-03-11 14:35:38,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:38,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581383263] [2021-03-11 14:35:38,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:38,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:38,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:38,887 INFO L87 Difference]: Start difference. First operand 143 states and 390 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,955 INFO L93 Difference]: Finished difference Result 234 states and 533 transitions. [2021-03-11 14:35:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:38,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,955 INFO L225 Difference]: With dead ends: 234 [2021-03-11 14:35:38,955 INFO L226 Difference]: Without dead ends: 224 [2021-03-11 14:35:38,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-03-11 14:35:38,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 145. [2021-03-11 14:35:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 2.7291666666666665) internal successors, (393), 144 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 393 transitions. [2021-03-11 14:35:38,957 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 393 transitions. Word has length 19 [2021-03-11 14:35:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,957 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 393 transitions. [2021-03-11 14:35:38,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 393 transitions. [2021-03-11 14:35:38,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:38,958 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,958 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518 [2021-03-11 14:35:38,958 INFO L428 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1036372372, now seen corresponding path program 516 times [2021-03-11 14:35:38,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810241336] [2021-03-11 14:35:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:38,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:39,000 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:39,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:39,021 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:39,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810241336] [2021-03-11 14:35:39,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:39,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239419344] [2021-03-11 14:35:39,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:39,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:39,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:39,041 INFO L87 Difference]: Start difference. First operand 145 states and 393 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,108 INFO L93 Difference]: Finished difference Result 228 states and 529 transitions. [2021-03-11 14:35:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:39,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,108 INFO L225 Difference]: With dead ends: 228 [2021-03-11 14:35:39,108 INFO L226 Difference]: Without dead ends: 210 [2021-03-11 14:35:39,109 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-03-11 14:35:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 140. [2021-03-11 14:35:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.762589928057554) internal successors, (384), 139 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 384 transitions. [2021-03-11 14:35:39,110 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 384 transitions. Word has length 19 [2021-03-11 14:35:39,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,110 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 384 transitions. [2021-03-11 14:35:39,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 384 transitions. [2021-03-11 14:35:39,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:39,111 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,111 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519 [2021-03-11 14:35:39,111 INFO L428 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1240611066, now seen corresponding path program 517 times [2021-03-11 14:35:39,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084586646] [2021-03-11 14:35:39,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,131 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:39,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:39,149 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:39,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:39,173 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:39,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:39,194 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:39,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084586646] [2021-03-11 14:35:39,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:39,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663934168] [2021-03-11 14:35:39,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:39,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:39,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:39,215 INFO L87 Difference]: Start difference. First operand 140 states and 384 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,261 INFO L93 Difference]: Finished difference Result 246 states and 559 transitions. [2021-03-11 14:35:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:39,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:39,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,262 INFO L225 Difference]: With dead ends: 246 [2021-03-11 14:35:39,262 INFO L226 Difference]: Without dead ends: 230 [2021-03-11 14:35:39,262 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-03-11 14:35:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 146. [2021-03-11 14:35:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.7448275862068967) internal successors, (398), 145 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 398 transitions. [2021-03-11 14:35:39,264 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 398 transitions. Word has length 19 [2021-03-11 14:35:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,264 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 398 transitions. [2021-03-11 14:35:39,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 398 transitions. [2021-03-11 14:35:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:39,264 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,264 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable520 [2021-03-11 14:35:39,264 INFO L428 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,264 INFO L82 PathProgramCache]: Analyzing trace with hash -981552840, now seen corresponding path program 518 times [2021-03-11 14:35:39,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398860869] [2021-03-11 14:35:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,282 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:39,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:39,301 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:39,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:39,324 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:39,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:39,346 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:39,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398860869] [2021-03-11 14:35:39,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:39,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895830410] [2021-03-11 14:35:39,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:39,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:39,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:39,367 INFO L87 Difference]: Start difference. First operand 146 states and 398 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,419 INFO L93 Difference]: Finished difference Result 240 states and 544 transitions. [2021-03-11 14:35:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:39,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,420 INFO L225 Difference]: With dead ends: 240 [2021-03-11 14:35:39,420 INFO L226 Difference]: Without dead ends: 227 [2021-03-11 14:35:39,420 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-03-11 14:35:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 143. [2021-03-11 14:35:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.7535211267605635) internal successors, (391), 142 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 391 transitions. [2021-03-11 14:35:39,422 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 391 transitions. Word has length 19 [2021-03-11 14:35:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,422 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 391 transitions. [2021-03-11 14:35:39,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 391 transitions. [2021-03-11 14:35:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:39,422 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,422 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable521 [2021-03-11 14:35:39,422 INFO L428 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,422 INFO L82 PathProgramCache]: Analyzing trace with hash -146519478, now seen corresponding path program 519 times [2021-03-11 14:35:39,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127483283] [2021-03-11 14:35:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:39,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:39,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:39,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:39,474 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:39,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:39,495 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:39,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127483283] [2021-03-11 14:35:39,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:39,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479635975] [2021-03-11 14:35:39,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:39,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:39,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:39,516 INFO L87 Difference]: Start difference. First operand 143 states and 391 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,569 INFO L93 Difference]: Finished difference Result 244 states and 558 transitions. [2021-03-11 14:35:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:39,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,570 INFO L225 Difference]: With dead ends: 244 [2021-03-11 14:35:39,570 INFO L226 Difference]: Without dead ends: 228 [2021-03-11 14:35:39,570 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-03-11 14:35:39,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2021-03-11 14:35:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.7162162162162162) internal successors, (402), 148 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 402 transitions. [2021-03-11 14:35:39,572 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 402 transitions. Word has length 19 [2021-03-11 14:35:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,572 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 402 transitions. [2021-03-11 14:35:39,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 402 transitions. [2021-03-11 14:35:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:39,572 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,572 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522 [2021-03-11 14:35:39,573 INFO L428 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1122724228, now seen corresponding path program 520 times [2021-03-11 14:35:39,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828423924] [2021-03-11 14:35:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,590 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:39,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:39,609 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:39,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:39,625 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:39,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:39,646 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:39,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828423924] [2021-03-11 14:35:39,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:39,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907954015] [2021-03-11 14:35:39,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:39,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:39,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:39,666 INFO L87 Difference]: Start difference. First operand 149 states and 402 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,735 INFO L93 Difference]: Finished difference Result 232 states and 538 transitions. [2021-03-11 14:35:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:39,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,735 INFO L225 Difference]: With dead ends: 232 [2021-03-11 14:35:39,735 INFO L226 Difference]: Without dead ends: 213 [2021-03-11 14:35:39,735 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-03-11 14:35:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 143. [2021-03-11 14:35:39,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.732394366197183) internal successors, (388), 142 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 388 transitions. [2021-03-11 14:35:39,737 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 388 transitions. Word has length 19 [2021-03-11 14:35:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,737 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 388 transitions. [2021-03-11 14:35:39,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 388 transitions. [2021-03-11 14:35:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:39,738 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,738 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable523 [2021-03-11 14:35:39,738 INFO L428 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1864843108, now seen corresponding path program 521 times [2021-03-11 14:35:39,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215215485] [2021-03-11 14:35:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,756 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:39,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:39,775 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:39,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:39,800 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:39,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:39,821 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:39,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215215485] [2021-03-11 14:35:39,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:39,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321430694] [2021-03-11 14:35:39,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:39,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:39,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:39,842 INFO L87 Difference]: Start difference. First operand 143 states and 388 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,895 INFO L93 Difference]: Finished difference Result 234 states and 531 transitions. [2021-03-11 14:35:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:39,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:39,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,895 INFO L225 Difference]: With dead ends: 234 [2021-03-11 14:35:39,895 INFO L226 Difference]: Without dead ends: 224 [2021-03-11 14:35:39,895 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-03-11 14:35:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 145. [2021-03-11 14:35:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 2.7152777777777777) internal successors, (391), 144 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 391 transitions. [2021-03-11 14:35:39,897 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 391 transitions. Word has length 19 [2021-03-11 14:35:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,897 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 391 transitions. [2021-03-11 14:35:39,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 391 transitions. [2021-03-11 14:35:39,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:39,898 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,898 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524 [2021-03-11 14:35:39,898 INFO L428 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,898 INFO L82 PathProgramCache]: Analyzing trace with hash -940719192, now seen corresponding path program 522 times [2021-03-11 14:35:39,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426388464] [2021-03-11 14:35:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,916 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:39,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:39,937 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:39,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:39,963 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:39,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:39,983 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:39,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426388464] [2021-03-11 14:35:40,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:40,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562783116] [2021-03-11 14:35:40,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:40,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:40,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:40,005 INFO L87 Difference]: Start difference. First operand 145 states and 391 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,078 INFO L93 Difference]: Finished difference Result 228 states and 527 transitions. [2021-03-11 14:35:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:40,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:40,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,079 INFO L225 Difference]: With dead ends: 228 [2021-03-11 14:35:40,079 INFO L226 Difference]: Without dead ends: 210 [2021-03-11 14:35:40,079 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-03-11 14:35:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 140. [2021-03-11 14:35:40,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.7482014388489207) internal successors, (382), 139 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 382 transitions. [2021-03-11 14:35:40,081 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 382 transitions. Word has length 19 [2021-03-11 14:35:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,081 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 382 transitions. [2021-03-11 14:35:40,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 382 transitions. [2021-03-11 14:35:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:40,081 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,081 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable525 [2021-03-11 14:35:40,081 INFO L428 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1366197632, now seen corresponding path program 523 times [2021-03-11 14:35:40,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774614044] [2021-03-11 14:35:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,110 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:40,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:40,127 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:40,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:40,148 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:40,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774614044] [2021-03-11 14:35:40,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:40,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278249295] [2021-03-11 14:35:40,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:40,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:40,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:40,169 INFO L87 Difference]: Start difference. First operand 140 states and 382 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,233 INFO L93 Difference]: Finished difference Result 220 states and 497 transitions. [2021-03-11 14:35:40,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:40,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:40,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,234 INFO L225 Difference]: With dead ends: 220 [2021-03-11 14:35:40,234 INFO L226 Difference]: Without dead ends: 210 [2021-03-11 14:35:40,234 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-03-11 14:35:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 142. [2021-03-11 14:35:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.7375886524822697) internal successors, (386), 141 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 386 transitions. [2021-03-11 14:35:40,236 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 386 transitions. Word has length 19 [2021-03-11 14:35:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,236 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 386 transitions. [2021-03-11 14:35:40,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 386 transitions. [2021-03-11 14:35:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:40,237 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,237 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526 [2021-03-11 14:35:40,237 INFO L428 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1605839970, now seen corresponding path program 524 times [2021-03-11 14:35:40,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979355829] [2021-03-11 14:35:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,266 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:40,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:40,282 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:40,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:40,304 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:40,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979355829] [2021-03-11 14:35:40,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:40,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472103726] [2021-03-11 14:35:40,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:40,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:40,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:40,325 INFO L87 Difference]: Start difference. First operand 142 states and 386 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,378 INFO L93 Difference]: Finished difference Result 220 states and 496 transitions. [2021-03-11 14:35:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:40,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:40,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,378 INFO L225 Difference]: With dead ends: 220 [2021-03-11 14:35:40,379 INFO L226 Difference]: Without dead ends: 209 [2021-03-11 14:35:40,379 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-03-11 14:35:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 141. [2021-03-11 14:35:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 2.742857142857143) internal successors, (384), 140 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 384 transitions. [2021-03-11 14:35:40,380 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 384 transitions. Word has length 19 [2021-03-11 14:35:40,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,381 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 384 transitions. [2021-03-11 14:35:40,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 384 transitions. [2021-03-11 14:35:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:40,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,381 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527 [2021-03-11 14:35:40,381 INFO L428 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1855684284, now seen corresponding path program 525 times [2021-03-11 14:35:40,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141014739] [2021-03-11 14:35:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,398 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,410 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:40,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:40,425 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:40,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:40,446 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:40,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141014739] [2021-03-11 14:35:40,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:40,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126592040] [2021-03-11 14:35:40,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:40,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:40,467 INFO L87 Difference]: Start difference. First operand 141 states and 384 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,531 INFO L93 Difference]: Finished difference Result 222 states and 503 transitions. [2021-03-11 14:35:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:40,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,532 INFO L225 Difference]: With dead ends: 222 [2021-03-11 14:35:40,532 INFO L226 Difference]: Without dead ends: 212 [2021-03-11 14:35:40,532 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-03-11 14:35:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 143. [2021-03-11 14:35:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.7253521126760565) internal successors, (387), 142 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 387 transitions. [2021-03-11 14:35:40,534 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 387 transitions. Word has length 19 [2021-03-11 14:35:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,534 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 387 transitions. [2021-03-11 14:35:40,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,534 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 387 transitions. [2021-03-11 14:35:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:40,534 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,534 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528 [2021-03-11 14:35:40,534 INFO L428 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1484304008, now seen corresponding path program 526 times [2021-03-11 14:35:40,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346308492] [2021-03-11 14:35:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:40,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:40,579 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:40,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:40,599 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:40,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346308492] [2021-03-11 14:35:40,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:40,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044955027] [2021-03-11 14:35:40,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:40,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:40,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:40,620 INFO L87 Difference]: Start difference. First operand 143 states and 387 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,689 INFO L93 Difference]: Finished difference Result 216 states and 499 transitions. [2021-03-11 14:35:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:40,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:40,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,690 INFO L225 Difference]: With dead ends: 216 [2021-03-11 14:35:40,690 INFO L226 Difference]: Without dead ends: 201 [2021-03-11 14:35:40,690 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-03-11 14:35:40,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 141. [2021-03-11 14:35:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 2.7357142857142858) internal successors, (383), 140 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 383 transitions. [2021-03-11 14:35:40,691 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 383 transitions. Word has length 19 [2021-03-11 14:35:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,692 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 383 transitions. [2021-03-11 14:35:40,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 383 transitions. [2021-03-11 14:35:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:40,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529 [2021-03-11 14:35:40,692 INFO L428 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1067984392, now seen corresponding path program 527 times [2021-03-11 14:35:40,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085276510] [2021-03-11 14:35:40,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,709 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,721 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:40,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:40,747 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:40,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:40,768 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:40,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085276510] [2021-03-11 14:35:40,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:40,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940256331] [2021-03-11 14:35:40,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:40,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:40,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:40,789 INFO L87 Difference]: Start difference. First operand 141 states and 383 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,843 INFO L93 Difference]: Finished difference Result 222 states and 502 transitions. [2021-03-11 14:35:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:40,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,844 INFO L225 Difference]: With dead ends: 222 [2021-03-11 14:35:40,844 INFO L226 Difference]: Without dead ends: 212 [2021-03-11 14:35:40,844 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-03-11 14:35:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 143. [2021-03-11 14:35:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.7183098591549295) internal successors, (386), 142 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 386 transitions. [2021-03-11 14:35:40,846 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 386 transitions. Word has length 19 [2021-03-11 14:35:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,846 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 386 transitions. [2021-03-11 14:35:40,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 386 transitions. [2021-03-11 14:35:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:40,846 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,846 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable530 [2021-03-11 14:35:40,846 INFO L428 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash 421420604, now seen corresponding path program 528 times [2021-03-11 14:35:40,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027607564] [2021-03-11 14:35:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,865 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,876 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:40,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:40,902 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:40,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:40,923 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:40,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027607564] [2021-03-11 14:35:40,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:40,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753660752] [2021-03-11 14:35:40,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:40,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:40,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:40,943 INFO L87 Difference]: Start difference. First operand 143 states and 386 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,014 INFO L93 Difference]: Finished difference Result 216 states and 498 transitions. [2021-03-11 14:35:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:41,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,015 INFO L225 Difference]: With dead ends: 216 [2021-03-11 14:35:41,015 INFO L226 Difference]: Without dead ends: 198 [2021-03-11 14:35:41,015 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-03-11 14:35:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 138. [2021-03-11 14:35:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.759124087591241) internal successors, (378), 137 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 378 transitions. [2021-03-11 14:35:41,016 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 378 transitions. Word has length 19 [2021-03-11 14:35:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,017 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 378 transitions. [2021-03-11 14:35:41,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 378 transitions. [2021-03-11 14:35:41,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:41,017 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,017 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable531 [2021-03-11 14:35:41,017 INFO L428 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,017 INFO L82 PathProgramCache]: Analyzing trace with hash 380240202, now seen corresponding path program 529 times [2021-03-11 14:35:41,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756831073] [2021-03-11 14:35:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,034 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,055 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:41,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:41,083 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:41,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:41,105 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:41,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756831073] [2021-03-11 14:35:41,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:41,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946889042] [2021-03-11 14:35:41,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:41,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:41,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:41,126 INFO L87 Difference]: Start difference. First operand 138 states and 378 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,171 INFO L93 Difference]: Finished difference Result 245 states and 557 transitions. [2021-03-11 14:35:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:41,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,172 INFO L225 Difference]: With dead ends: 245 [2021-03-11 14:35:41,172 INFO L226 Difference]: Without dead ends: 229 [2021-03-11 14:35:41,172 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-03-11 14:35:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 141. [2021-03-11 14:35:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 2.7285714285714286) internal successors, (382), 140 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 382 transitions. [2021-03-11 14:35:41,174 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 382 transitions. Word has length 19 [2021-03-11 14:35:41,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,174 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 382 transitions. [2021-03-11 14:35:41,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,174 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 382 transitions. [2021-03-11 14:35:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:41,174 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,175 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable532 [2021-03-11 14:35:41,175 INFO L428 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1771486344, now seen corresponding path program 530 times [2021-03-11 14:35:41,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511631392] [2021-03-11 14:35:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,194 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,215 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:41,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:41,243 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:41,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:41,263 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:41,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511631392] [2021-03-11 14:35:41,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:41,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500561253] [2021-03-11 14:35:41,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:41,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:41,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:41,284 INFO L87 Difference]: Start difference. First operand 141 states and 382 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,348 INFO L93 Difference]: Finished difference Result 239 states and 542 transitions. [2021-03-11 14:35:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:41,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,349 INFO L225 Difference]: With dead ends: 239 [2021-03-11 14:35:41,349 INFO L226 Difference]: Without dead ends: 226 [2021-03-11 14:35:41,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-03-11 14:35:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 138. [2021-03-11 14:35:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.7372262773722627) internal successors, (375), 137 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 375 transitions. [2021-03-11 14:35:41,351 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 375 transitions. Word has length 19 [2021-03-11 14:35:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,351 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 375 transitions. [2021-03-11 14:35:41,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,351 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 375 transitions. [2021-03-11 14:35:41,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:41,352 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,352 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533 [2021-03-11 14:35:41,352 INFO L428 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1474331790, now seen corresponding path program 531 times [2021-03-11 14:35:41,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077703862] [2021-03-11 14:35:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,390 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:41,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:41,418 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:41,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:41,439 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:41,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077703862] [2021-03-11 14:35:41,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:41,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108942583] [2021-03-11 14:35:41,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:41,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:41,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:41,459 INFO L87 Difference]: Start difference. First operand 138 states and 375 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,509 INFO L93 Difference]: Finished difference Result 249 states and 566 transitions. [2021-03-11 14:35:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:41,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,510 INFO L225 Difference]: With dead ends: 249 [2021-03-11 14:35:41,510 INFO L226 Difference]: Without dead ends: 233 [2021-03-11 14:35:41,510 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-03-11 14:35:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 143. [2021-03-11 14:35:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.704225352112676) internal successors, (384), 142 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 384 transitions. [2021-03-11 14:35:41,512 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 384 transitions. Word has length 19 [2021-03-11 14:35:41,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,512 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 384 transitions. [2021-03-11 14:35:41,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 384 transitions. [2021-03-11 14:35:41,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:41,512 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,512 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534 [2021-03-11 14:35:41,512 INFO L428 AbstractCegarLoop]: === Iteration 536 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,512 INFO L82 PathProgramCache]: Analyzing trace with hash 723269696, now seen corresponding path program 532 times [2021-03-11 14:35:41,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060628764] [2021-03-11 14:35:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,558 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:41,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:41,592 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:41,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:41,613 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:41,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060628764] [2021-03-11 14:35:41,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:41,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555948340] [2021-03-11 14:35:41,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:41,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:41,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:41,633 INFO L87 Difference]: Start difference. First operand 143 states and 384 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,700 INFO L93 Difference]: Finished difference Result 245 states and 554 transitions. [2021-03-11 14:35:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:41,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,701 INFO L225 Difference]: With dead ends: 245 [2021-03-11 14:35:41,701 INFO L226 Difference]: Without dead ends: 228 [2021-03-11 14:35:41,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-03-11 14:35:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 138. [2021-03-11 14:35:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.7153284671532845) internal successors, (372), 137 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 372 transitions. [2021-03-11 14:35:41,703 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 372 transitions. Word has length 19 [2021-03-11 14:35:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,703 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 372 transitions. [2021-03-11 14:35:41,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 372 transitions. [2021-03-11 14:35:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:41,703 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,703 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable535 [2021-03-11 14:35:41,703 INFO L428 AbstractCegarLoop]: === Iteration 537 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1883916852, now seen corresponding path program 533 times [2021-03-11 14:35:41,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704659924] [2021-03-11 14:35:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,722 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,742 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:41,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:41,758 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:41,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:41,779 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:41,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704659924] [2021-03-11 14:35:41,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:41,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719761081] [2021-03-11 14:35:41,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:41,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:41,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:41,800 INFO L87 Difference]: Start difference. First operand 138 states and 372 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,866 INFO L93 Difference]: Finished difference Result 234 states and 530 transitions. [2021-03-11 14:35:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:41,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:41,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,866 INFO L225 Difference]: With dead ends: 234 [2021-03-11 14:35:41,866 INFO L226 Difference]: Without dead ends: 224 [2021-03-11 14:35:41,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-03-11 14:35:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 140. [2021-03-11 14:35:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.697841726618705) internal successors, (375), 139 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 375 transitions. [2021-03-11 14:35:41,868 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 375 transitions. Word has length 19 [2021-03-11 14:35:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,868 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 375 transitions. [2021-03-11 14:35:41,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 375 transitions. [2021-03-11 14:35:41,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:41,869 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,869 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable536 [2021-03-11 14:35:41,869 INFO L428 AbstractCegarLoop]: === Iteration 538 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,869 INFO L82 PathProgramCache]: Analyzing trace with hash -700437136, now seen corresponding path program 534 times [2021-03-11 14:35:41,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769289324] [2021-03-11 14:35:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,886 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,907 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:41,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:41,923 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:41,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:41,943 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:41,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769289324] [2021-03-11 14:35:41,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:41,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11598646] [2021-03-11 14:35:41,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:41,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:41,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:41,964 INFO L87 Difference]: Start difference. First operand 140 states and 375 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,032 INFO L93 Difference]: Finished difference Result 236 states and 533 transitions. [2021-03-11 14:35:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:42,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,033 INFO L225 Difference]: With dead ends: 236 [2021-03-11 14:35:42,033 INFO L226 Difference]: Without dead ends: 219 [2021-03-11 14:35:42,033 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-03-11 14:35:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 135. [2021-03-11 14:35:42,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.7238805970149254) internal successors, (365), 134 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 365 transitions. [2021-03-11 14:35:42,035 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 365 transitions. Word has length 19 [2021-03-11 14:35:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,035 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 365 transitions. [2021-03-11 14:35:42,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 365 transitions. [2021-03-11 14:35:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:42,035 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,035 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537 [2021-03-11 14:35:42,035 INFO L428 AbstractCegarLoop]: === Iteration 539 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1988693016, now seen corresponding path program 535 times [2021-03-11 14:35:42,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258120952] [2021-03-11 14:35:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:42,064 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:42,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:42,092 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:42,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:42,113 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:42,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258120952] [2021-03-11 14:35:42,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:42,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869682172] [2021-03-11 14:35:42,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:42,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:42,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:42,134 INFO L87 Difference]: Start difference. First operand 135 states and 365 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,185 INFO L93 Difference]: Finished difference Result 241 states and 542 transitions. [2021-03-11 14:35:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,186 INFO L225 Difference]: With dead ends: 241 [2021-03-11 14:35:42,186 INFO L226 Difference]: Without dead ends: 225 [2021-03-11 14:35:42,186 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-03-11 14:35:42,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 135. [2021-03-11 14:35:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.701492537313433) internal successors, (362), 134 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 362 transitions. [2021-03-11 14:35:42,188 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 362 transitions. Word has length 19 [2021-03-11 14:35:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,188 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 362 transitions. [2021-03-11 14:35:42,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 362 transitions. [2021-03-11 14:35:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:42,188 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,188 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable538 [2021-03-11 14:35:42,188 INFO L428 AbstractCegarLoop]: === Iteration 540 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,188 INFO L82 PathProgramCache]: Analyzing trace with hash 154547734, now seen corresponding path program 536 times [2021-03-11 14:35:42,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617236530] [2021-03-11 14:35:42,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:42,227 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:42,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:42,255 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:42,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:42,276 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:42,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617236530] [2021-03-11 14:35:42,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:42,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366918559] [2021-03-11 14:35:42,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:42,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:42,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:42,297 INFO L87 Difference]: Start difference. First operand 135 states and 362 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,362 INFO L93 Difference]: Finished difference Result 235 states and 527 transitions. [2021-03-11 14:35:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,363 INFO L225 Difference]: With dead ends: 235 [2021-03-11 14:35:42,363 INFO L226 Difference]: Without dead ends: 222 [2021-03-11 14:35:42,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-11 14:35:42,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 132. [2021-03-11 14:35:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.7099236641221376) internal successors, (355), 131 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 355 transitions. [2021-03-11 14:35:42,365 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 355 transitions. Word has length 19 [2021-03-11 14:35:42,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,365 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 355 transitions. [2021-03-11 14:35:42,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 355 transitions. [2021-03-11 14:35:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:42,365 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,365 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable539 [2021-03-11 14:35:42,365 INFO L428 AbstractCegarLoop]: === Iteration 541 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1799928014, now seen corresponding path program 537 times [2021-03-11 14:35:42,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564977685] [2021-03-11 14:35:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:42,394 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:42,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:42,410 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:42,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:42,431 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:42,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564977685] [2021-03-11 14:35:42,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:42,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829699933] [2021-03-11 14:35:42,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:42,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:42,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:42,452 INFO L87 Difference]: Start difference. First operand 132 states and 355 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,501 INFO L93 Difference]: Finished difference Result 239 states and 541 transitions. [2021-03-11 14:35:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:42,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,501 INFO L225 Difference]: With dead ends: 239 [2021-03-11 14:35:42,501 INFO L226 Difference]: Without dead ends: 223 [2021-03-11 14:35:42,501 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-03-11 14:35:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 138. [2021-03-11 14:35:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.6715328467153285) internal successors, (366), 137 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 366 transitions. [2021-03-11 14:35:42,503 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 366 transitions. Word has length 19 [2021-03-11 14:35:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,503 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 366 transitions. [2021-03-11 14:35:42,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 366 transitions. [2021-03-11 14:35:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:42,504 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,504 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable540 [2021-03-11 14:35:42,504 INFO L428 AbstractCegarLoop]: === Iteration 542 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,504 INFO L82 PathProgramCache]: Analyzing trace with hash 823723264, now seen corresponding path program 538 times [2021-03-11 14:35:42,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515046815] [2021-03-11 14:35:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:42,536 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:42,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:42,552 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:42,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:42,573 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:42,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515046815] [2021-03-11 14:35:42,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:42,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98923462] [2021-03-11 14:35:42,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:42,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:42,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:42,593 INFO L87 Difference]: Start difference. First operand 138 states and 366 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,659 INFO L93 Difference]: Finished difference Result 227 states and 521 transitions. [2021-03-11 14:35:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:42,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,660 INFO L225 Difference]: With dead ends: 227 [2021-03-11 14:35:42,660 INFO L226 Difference]: Without dead ends: 208 [2021-03-11 14:35:42,660 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-03-11 14:35:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 132. [2021-03-11 14:35:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.687022900763359) internal successors, (352), 131 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 352 transitions. [2021-03-11 14:35:42,662 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 352 transitions. Word has length 19 [2021-03-11 14:35:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,662 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 352 transitions. [2021-03-11 14:35:42,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 352 transitions. [2021-03-11 14:35:42,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:42,662 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,662 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable541 [2021-03-11 14:35:42,662 INFO L428 AbstractCegarLoop]: === Iteration 543 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,662 INFO L82 PathProgramCache]: Analyzing trace with hash 270189236, now seen corresponding path program 539 times [2021-03-11 14:35:42,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604785816] [2021-03-11 14:35:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:42,691 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:42,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:42,706 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:42,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:42,727 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:42,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604785816] [2021-03-11 14:35:42,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:42,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149064074] [2021-03-11 14:35:42,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:42,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:42,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:42,748 INFO L87 Difference]: Start difference. First operand 132 states and 352 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,808 INFO L93 Difference]: Finished difference Result 229 states and 514 transitions. [2021-03-11 14:35:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:42,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,809 INFO L225 Difference]: With dead ends: 229 [2021-03-11 14:35:42,809 INFO L226 Difference]: Without dead ends: 219 [2021-03-11 14:35:42,809 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-03-11 14:35:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 134. [2021-03-11 14:35:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.669172932330827) internal successors, (355), 133 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 355 transitions. [2021-03-11 14:35:42,811 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 355 transitions. Word has length 19 [2021-03-11 14:35:42,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,811 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 355 transitions. [2021-03-11 14:35:42,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,811 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 355 transitions. [2021-03-11 14:35:42,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:42,811 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,811 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable542 [2021-03-11 14:35:42,811 INFO L428 AbstractCegarLoop]: === Iteration 544 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1458858098, now seen corresponding path program 540 times [2021-03-11 14:35:42,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704507414] [2021-03-11 14:35:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:42,839 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:42,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:42,855 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:42,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:42,876 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:42,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704507414] [2021-03-11 14:35:42,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:42,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220419905] [2021-03-11 14:35:42,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:42,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:42,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:42,896 INFO L87 Difference]: Start difference. First operand 134 states and 355 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,962 INFO L93 Difference]: Finished difference Result 223 states and 510 transitions. [2021-03-11 14:35:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:42,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,963 INFO L225 Difference]: With dead ends: 223 [2021-03-11 14:35:42,963 INFO L226 Difference]: Without dead ends: 205 [2021-03-11 14:35:42,963 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-03-11 14:35:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 129. [2021-03-11 14:35:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 2.6953125) internal successors, (345), 128 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 345 transitions. [2021-03-11 14:35:42,965 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 345 transitions. Word has length 19 [2021-03-11 14:35:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,965 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 345 transitions. [2021-03-11 14:35:42,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 345 transitions. [2021-03-11 14:35:42,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:42,965 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,965 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable543 [2021-03-11 14:35:42,965 INFO L428 AbstractCegarLoop]: === Iteration 545 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1337500568, now seen corresponding path program 541 times [2021-03-11 14:35:42,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047476287] [2021-03-11 14:35:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,983 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:42,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:42,994 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:42,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:43,022 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:43,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:43,043 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:43,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047476287] [2021-03-11 14:35:43,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:43,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620048093] [2021-03-11 14:35:43,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:43,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:43,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:43,064 INFO L87 Difference]: Start difference. First operand 129 states and 345 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,114 INFO L93 Difference]: Finished difference Result 243 states and 557 transitions. [2021-03-11 14:35:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:43,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,114 INFO L225 Difference]: With dead ends: 243 [2021-03-11 14:35:43,114 INFO L226 Difference]: Without dead ends: 227 [2021-03-11 14:35:43,114 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-03-11 14:35:43,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 139. [2021-03-11 14:35:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 2.7028985507246377) internal successors, (373), 138 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 373 transitions. [2021-03-11 14:35:43,116 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 373 transitions. Word has length 19 [2021-03-11 14:35:43,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,116 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 373 transitions. [2021-03-11 14:35:43,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,116 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 373 transitions. [2021-03-11 14:35:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:43,117 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,117 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable544 [2021-03-11 14:35:43,117 INFO L428 AbstractCegarLoop]: === Iteration 546 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2088562662, now seen corresponding path program 542 times [2021-03-11 14:35:43,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391146329] [2021-03-11 14:35:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,145 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:43,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:43,173 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:43,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:43,194 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:43,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391146329] [2021-03-11 14:35:43,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:43,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554373872] [2021-03-11 14:35:43,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:43,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:43,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:43,214 INFO L87 Difference]: Start difference. First operand 139 states and 373 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,280 INFO L93 Difference]: Finished difference Result 239 states and 545 transitions. [2021-03-11 14:35:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:43,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,281 INFO L225 Difference]: With dead ends: 239 [2021-03-11 14:35:43,281 INFO L226 Difference]: Without dead ends: 222 [2021-03-11 14:35:43,281 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-11 14:35:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 134. [2021-03-11 14:35:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.699248120300752) internal successors, (359), 133 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 359 transitions. [2021-03-11 14:35:43,283 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 359 transitions. Word has length 19 [2021-03-11 14:35:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,283 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 359 transitions. [2021-03-11 14:35:43,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 359 transitions. [2021-03-11 14:35:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:43,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable545 [2021-03-11 14:35:43,283 INFO L428 AbstractCegarLoop]: === Iteration 547 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1357028874, now seen corresponding path program 543 times [2021-03-11 14:35:43,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659477550] [2021-03-11 14:35:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,313 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:43,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:43,329 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:43,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:43,350 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:43,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659477550] [2021-03-11 14:35:43,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:43,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622847093] [2021-03-11 14:35:43,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:43,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:43,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:43,370 INFO L87 Difference]: Start difference. First operand 134 states and 359 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,416 INFO L93 Difference]: Finished difference Result 231 states and 525 transitions. [2021-03-11 14:35:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:43,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,417 INFO L225 Difference]: With dead ends: 231 [2021-03-11 14:35:43,417 INFO L226 Difference]: Without dead ends: 215 [2021-03-11 14:35:43,417 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-03-11 14:35:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 140. [2021-03-11 14:35:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.661870503597122) internal successors, (370), 139 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 370 transitions. [2021-03-11 14:35:43,419 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 370 transitions. Word has length 19 [2021-03-11 14:35:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,419 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 370 transitions. [2021-03-11 14:35:43,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 370 transitions. [2021-03-11 14:35:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:43,419 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,419 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable546 [2021-03-11 14:35:43,419 INFO L428 AbstractCegarLoop]: === Iteration 548 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,419 INFO L82 PathProgramCache]: Analyzing trace with hash 380824124, now seen corresponding path program 544 times [2021-03-11 14:35:43,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094573479] [2021-03-11 14:35:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,437 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:43,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:43,464 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:43,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:43,484 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:43,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094573479] [2021-03-11 14:35:43,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:43,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810882570] [2021-03-11 14:35:43,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:43,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:43,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:43,505 INFO L87 Difference]: Start difference. First operand 140 states and 370 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,578 INFO L93 Difference]: Finished difference Result 219 states and 505 transitions. [2021-03-11 14:35:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:43,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,579 INFO L225 Difference]: With dead ends: 219 [2021-03-11 14:35:43,579 INFO L226 Difference]: Without dead ends: 200 [2021-03-11 14:35:43,579 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-03-11 14:35:43,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 134. [2021-03-11 14:35:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.661654135338346) internal successors, (354), 133 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 354 transitions. [2021-03-11 14:35:43,580 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 354 transitions. Word has length 19 [2021-03-11 14:35:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,581 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 354 transitions. [2021-03-11 14:35:43,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 354 transitions. [2021-03-11 14:35:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:43,581 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,581 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable547 [2021-03-11 14:35:43,581 INFO L428 AbstractCegarLoop]: === Iteration 549 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2008828456, now seen corresponding path program 545 times [2021-03-11 14:35:43,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845796037] [2021-03-11 14:35:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,598 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,609 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:43,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:43,625 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:43,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:43,646 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:43,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845796037] [2021-03-11 14:35:43,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:43,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940930503] [2021-03-11 14:35:43,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:43,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:43,667 INFO L87 Difference]: Start difference. First operand 134 states and 354 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,734 INFO L93 Difference]: Finished difference Result 216 states and 499 transitions. [2021-03-11 14:35:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:43,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,735 INFO L225 Difference]: With dead ends: 216 [2021-03-11 14:35:43,735 INFO L226 Difference]: Without dead ends: 204 [2021-03-11 14:35:43,735 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-03-11 14:35:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 138. [2021-03-11 14:35:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.6423357664233578) internal successors, (362), 137 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 362 transitions. [2021-03-11 14:35:43,739 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 362 transitions. Word has length 19 [2021-03-11 14:35:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,739 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 362 transitions. [2021-03-11 14:35:43,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 362 transitions. [2021-03-11 14:35:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:43,739 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,740 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable548 [2021-03-11 14:35:43,740 INFO L428 AbstractCegarLoop]: === Iteration 550 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1427264310, now seen corresponding path program 546 times [2021-03-11 14:35:43,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463759963] [2021-03-11 14:35:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,757 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,768 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:43,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:43,784 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:43,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:43,804 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:43,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463759963] [2021-03-11 14:35:43,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:43,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286716378] [2021-03-11 14:35:43,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:43,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:43,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:43,825 INFO L87 Difference]: Start difference. First operand 138 states and 362 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,885 INFO L93 Difference]: Finished difference Result 203 states and 478 transitions. [2021-03-11 14:35:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:43,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,885 INFO L225 Difference]: With dead ends: 203 [2021-03-11 14:35:43,885 INFO L226 Difference]: Without dead ends: 181 [2021-03-11 14:35:43,886 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-03-11 14:35:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 129. [2021-03-11 14:35:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 2.671875) internal successors, (342), 128 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 342 transitions. [2021-03-11 14:35:43,887 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 342 transitions. Word has length 19 [2021-03-11 14:35:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,887 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 342 transitions. [2021-03-11 14:35:43,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 342 transitions. [2021-03-11 14:35:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:43,887 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,888 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable549 [2021-03-11 14:35:43,888 INFO L428 AbstractCegarLoop]: === Iteration 551 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1173836118, now seen corresponding path program 547 times [2021-03-11 14:35:43,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134615942] [2021-03-11 14:35:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,921 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:43,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:43,940 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:43,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:43,961 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:43,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134615942] [2021-03-11 14:35:43,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:43,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062517678] [2021-03-11 14:35:43,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:43,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:43,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:43,981 INFO L87 Difference]: Start difference. First operand 129 states and 342 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,050 INFO L93 Difference]: Finished difference Result 221 states and 497 transitions. [2021-03-11 14:35:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,050 INFO L225 Difference]: With dead ends: 221 [2021-03-11 14:35:44,050 INFO L226 Difference]: Without dead ends: 211 [2021-03-11 14:35:44,051 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-03-11 14:35:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 133. [2021-03-11 14:35:44,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.6666666666666665) internal successors, (352), 132 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 352 transitions. [2021-03-11 14:35:44,052 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 352 transitions. Word has length 19 [2021-03-11 14:35:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,052 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 352 transitions. [2021-03-11 14:35:44,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 352 transitions. [2021-03-11 14:35:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:44,053 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,053 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable550 [2021-03-11 14:35:44,053 INFO L428 AbstractCegarLoop]: === Iteration 552 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1410517870, now seen corresponding path program 548 times [2021-03-11 14:35:44,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929929205] [2021-03-11 14:35:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,070 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:44,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:44,081 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:44,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:44,097 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:44,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:44,118 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:44,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929929205] [2021-03-11 14:35:44,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:44,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429313032] [2021-03-11 14:35:44,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:44,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:44,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:44,138 INFO L87 Difference]: Start difference. First operand 133 states and 352 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,206 INFO L93 Difference]: Finished difference Result 223 states and 500 transitions. [2021-03-11 14:35:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:44,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,206 INFO L225 Difference]: With dead ends: 223 [2021-03-11 14:35:44,206 INFO L226 Difference]: Without dead ends: 209 [2021-03-11 14:35:44,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-03-11 14:35:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 131. [2021-03-11 14:35:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.669230769230769) internal successors, (347), 130 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 347 transitions. [2021-03-11 14:35:44,208 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 347 transitions. Word has length 19 [2021-03-11 14:35:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,208 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 347 transitions. [2021-03-11 14:35:44,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,208 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 347 transitions. [2021-03-11 14:35:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:44,209 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,209 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable551 [2021-03-11 14:35:44,209 INFO L428 AbstractCegarLoop]: === Iteration 553 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1918538616, now seen corresponding path program 549 times [2021-03-11 14:35:44,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454383904] [2021-03-11 14:35:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,225 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:44,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:44,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:44,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:44,252 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:44,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:44,272 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:44,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454383904] [2021-03-11 14:35:44,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:44,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377771115] [2021-03-11 14:35:44,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:44,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:44,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:44,293 INFO L87 Difference]: Start difference. First operand 131 states and 347 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,360 INFO L93 Difference]: Finished difference Result 218 states and 489 transitions. [2021-03-11 14:35:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:44,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,361 INFO L225 Difference]: With dead ends: 218 [2021-03-11 14:35:44,361 INFO L226 Difference]: Without dead ends: 208 [2021-03-11 14:35:44,361 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-03-11 14:35:44,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 133. [2021-03-11 14:35:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.6515151515151514) internal successors, (350), 132 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 350 transitions. [2021-03-11 14:35:44,363 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 350 transitions. Word has length 19 [2021-03-11 14:35:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,363 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 350 transitions. [2021-03-11 14:35:44,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 350 transitions. [2021-03-11 14:35:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:44,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,363 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable552 [2021-03-11 14:35:44,363 INFO L428 AbstractCegarLoop]: === Iteration 554 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,363 INFO L82 PathProgramCache]: Analyzing trace with hash 189491282, now seen corresponding path program 550 times [2021-03-11 14:35:44,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928551327] [2021-03-11 14:35:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:44,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:44,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:44,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:44,407 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:44,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:44,427 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:44,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928551327] [2021-03-11 14:35:44,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:44,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411327459] [2021-03-11 14:35:44,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:44,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:44,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:44,448 INFO L87 Difference]: Start difference. First operand 133 states and 350 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,514 INFO L93 Difference]: Finished difference Result 212 states and 485 transitions. [2021-03-11 14:35:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:44,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,515 INFO L225 Difference]: With dead ends: 212 [2021-03-11 14:35:44,515 INFO L226 Difference]: Without dead ends: 197 [2021-03-11 14:35:44,515 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-03-11 14:35:44,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 131. [2021-03-11 14:35:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.6538461538461537) internal successors, (345), 130 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 345 transitions. [2021-03-11 14:35:44,517 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 345 transitions. Word has length 19 [2021-03-11 14:35:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,517 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 345 transitions. [2021-03-11 14:35:44,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 345 transitions. [2021-03-11 14:35:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:44,517 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,517 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable553 [2021-03-11 14:35:44,517 INFO L428 AbstractCegarLoop]: === Iteration 555 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,518 INFO L82 PathProgramCache]: Analyzing trace with hash 823589624, now seen corresponding path program 551 times [2021-03-11 14:35:44,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809761416] [2021-03-11 14:35:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:44,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:44,546 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:44,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:44,562 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:44,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:44,583 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:44,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809761416] [2021-03-11 14:35:44,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:44,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126685943] [2021-03-11 14:35:44,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:44,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:44,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:44,604 INFO L87 Difference]: Start difference. First operand 131 states and 345 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,671 INFO L93 Difference]: Finished difference Result 213 states and 490 transitions. [2021-03-11 14:35:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:44,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:44,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,672 INFO L225 Difference]: With dead ends: 213 [2021-03-11 14:35:44,672 INFO L226 Difference]: Without dead ends: 201 [2021-03-11 14:35:44,672 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-03-11 14:35:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 135. [2021-03-11 14:35:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.6343283582089554) internal successors, (353), 134 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 353 transitions. [2021-03-11 14:35:44,674 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 353 transitions. Word has length 19 [2021-03-11 14:35:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,674 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 353 transitions. [2021-03-11 14:35:44,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 353 transitions. [2021-03-11 14:35:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:44,674 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,674 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable554 [2021-03-11 14:35:44,674 INFO L428 AbstractCegarLoop]: === Iteration 556 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1678896278, now seen corresponding path program 552 times [2021-03-11 14:35:44,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832234803] [2021-03-11 14:35:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,691 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:44,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:44,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:44,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:44,718 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:44,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:44,739 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:44,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832234803] [2021-03-11 14:35:44,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:44,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489266059] [2021-03-11 14:35:44,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:44,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:44,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:44,760 INFO L87 Difference]: Start difference. First operand 135 states and 353 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,825 INFO L93 Difference]: Finished difference Result 200 states and 469 transitions. [2021-03-11 14:35:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,826 INFO L225 Difference]: With dead ends: 200 [2021-03-11 14:35:44,826 INFO L226 Difference]: Without dead ends: 178 [2021-03-11 14:35:44,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-03-11 14:35:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2021-03-11 14:35:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.688) internal successors, (336), 125 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 336 transitions. [2021-03-11 14:35:44,828 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 336 transitions. Word has length 19 [2021-03-11 14:35:44,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,828 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 336 transitions. [2021-03-11 14:35:44,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,828 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 336 transitions. [2021-03-11 14:35:44,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:44,828 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,828 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable555 [2021-03-11 14:35:44,828 INFO L428 AbstractCegarLoop]: === Iteration 557 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash 283350700, now seen corresponding path program 553 times [2021-03-11 14:35:44,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365289859] [2021-03-11 14:35:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:44,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:44,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:44,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:44,891 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:44,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:44,913 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:44,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365289859] [2021-03-11 14:35:44,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:44,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500405676] [2021-03-11 14:35:44,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:44,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:44,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:44,934 INFO L87 Difference]: Start difference. First operand 126 states and 336 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,983 INFO L93 Difference]: Finished difference Result 220 states and 486 transitions. [2021-03-11 14:35:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:44,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:44,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,984 INFO L225 Difference]: With dead ends: 220 [2021-03-11 14:35:44,984 INFO L226 Difference]: Without dead ends: 204 [2021-03-11 14:35:44,984 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-03-11 14:35:44,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 129. [2021-03-11 14:35:44,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 2.65625) internal successors, (340), 128 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 340 transitions. [2021-03-11 14:35:44,986 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 340 transitions. Word has length 19 [2021-03-11 14:35:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,986 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 340 transitions. [2021-03-11 14:35:44,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 340 transitions. [2021-03-11 14:35:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:44,986 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,986 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable556 [2021-03-11 14:35:44,986 INFO L428 AbstractCegarLoop]: === Iteration 558 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,987 INFO L82 PathProgramCache]: Analyzing trace with hash 542408926, now seen corresponding path program 554 times [2021-03-11 14:35:44,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672282528] [2021-03-11 14:35:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,008 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,029 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:45,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:45,052 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:45,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:45,073 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:45,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672282528] [2021-03-11 14:35:45,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:45,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272215540] [2021-03-11 14:35:45,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:45,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:45,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:45,094 INFO L87 Difference]: Start difference. First operand 129 states and 340 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,144 INFO L93 Difference]: Finished difference Result 214 states and 471 transitions. [2021-03-11 14:35:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,144 INFO L225 Difference]: With dead ends: 214 [2021-03-11 14:35:45,144 INFO L226 Difference]: Without dead ends: 201 [2021-03-11 14:35:45,145 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-03-11 14:35:45,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 126. [2021-03-11 14:35:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.664) internal successors, (333), 125 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 333 transitions. [2021-03-11 14:35:45,146 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 333 transitions. Word has length 19 [2021-03-11 14:35:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,146 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 333 transitions. [2021-03-11 14:35:45,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 333 transitions. [2021-03-11 14:35:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:45,147 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,147 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable557 [2021-03-11 14:35:45,147 INFO L428 AbstractCegarLoop]: === Iteration 559 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1317087154, now seen corresponding path program 555 times [2021-03-11 14:35:45,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303382608] [2021-03-11 14:35:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,186 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:45,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:45,214 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:45,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:45,235 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:45,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303382608] [2021-03-11 14:35:45,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:45,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884571571] [2021-03-11 14:35:45,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:45,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:45,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:45,255 INFO L87 Difference]: Start difference. First operand 126 states and 333 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,304 INFO L93 Difference]: Finished difference Result 224 states and 495 transitions. [2021-03-11 14:35:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:45,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,305 INFO L225 Difference]: With dead ends: 224 [2021-03-11 14:35:45,305 INFO L226 Difference]: Without dead ends: 208 [2021-03-11 14:35:45,305 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-03-11 14:35:45,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 131. [2021-03-11 14:35:45,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.6307692307692307) internal successors, (342), 130 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 342 transitions. [2021-03-11 14:35:45,307 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 342 transitions. Word has length 19 [2021-03-11 14:35:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,307 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 342 transitions. [2021-03-11 14:35:45,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 342 transitions. [2021-03-11 14:35:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:45,307 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,307 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable558 [2021-03-11 14:35:45,307 INFO L428 AbstractCegarLoop]: === Iteration 560 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2068149248, now seen corresponding path program 556 times [2021-03-11 14:35:45,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986501540] [2021-03-11 14:35:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,340 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,361 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:45,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:45,389 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:45,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:45,409 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:45,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986501540] [2021-03-11 14:35:45,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:45,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157930230] [2021-03-11 14:35:45,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:45,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:45,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:45,429 INFO L87 Difference]: Start difference. First operand 131 states and 342 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,495 INFO L93 Difference]: Finished difference Result 220 states and 483 transitions. [2021-03-11 14:35:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:45,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,496 INFO L225 Difference]: With dead ends: 220 [2021-03-11 14:35:45,496 INFO L226 Difference]: Without dead ends: 203 [2021-03-11 14:35:45,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-03-11 14:35:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 126. [2021-03-11 14:35:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.64) internal successors, (330), 125 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 330 transitions. [2021-03-11 14:35:45,498 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 330 transitions. Word has length 19 [2021-03-11 14:35:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,498 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 330 transitions. [2021-03-11 14:35:45,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 330 transitions. [2021-03-11 14:35:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:45,498 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,498 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559 [2021-03-11 14:35:45,498 INFO L428 AbstractCegarLoop]: === Iteration 561 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,498 INFO L82 PathProgramCache]: Analyzing trace with hash -916665526, now seen corresponding path program 557 times [2021-03-11 14:35:45,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374173346] [2021-03-11 14:35:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,536 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:45,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:45,552 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:45,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:45,573 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:45,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374173346] [2021-03-11 14:35:45,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:45,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795007021] [2021-03-11 14:35:45,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:45,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:45,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:45,593 INFO L87 Difference]: Start difference. First operand 126 states and 330 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,644 INFO L93 Difference]: Finished difference Result 209 states and 459 transitions. [2021-03-11 14:35:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:45,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,645 INFO L225 Difference]: With dead ends: 209 [2021-03-11 14:35:45,645 INFO L226 Difference]: Without dead ends: 199 [2021-03-11 14:35:45,645 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-03-11 14:35:45,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 128. [2021-03-11 14:35:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.622047244094488) internal successors, (333), 127 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 333 transitions. [2021-03-11 14:35:45,647 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 333 transitions. Word has length 19 [2021-03-11 14:35:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,647 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 333 transitions. [2021-03-11 14:35:45,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 333 transitions. [2021-03-11 14:35:45,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:45,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,647 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable560 [2021-03-11 14:35:45,647 INFO L428 AbstractCegarLoop]: === Iteration 562 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,648 INFO L82 PathProgramCache]: Analyzing trace with hash -171963028, now seen corresponding path program 558 times [2021-03-11 14:35:45,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77683340] [2021-03-11 14:35:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,685 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:45,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:45,701 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:45,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:45,721 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:45,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77683340] [2021-03-11 14:35:45,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:45,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725038427] [2021-03-11 14:35:45,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:45,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:45,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:45,742 INFO L87 Difference]: Start difference. First operand 128 states and 333 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,809 INFO L93 Difference]: Finished difference Result 211 states and 462 transitions. [2021-03-11 14:35:45,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:45,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,809 INFO L225 Difference]: With dead ends: 211 [2021-03-11 14:35:45,809 INFO L226 Difference]: Without dead ends: 194 [2021-03-11 14:35:45,810 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-03-11 14:35:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 123. [2021-03-11 14:35:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.6475409836065573) internal successors, (323), 122 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 323 transitions. [2021-03-11 14:35:45,811 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 323 transitions. Word has length 19 [2021-03-11 14:35:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,811 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 323 transitions. [2021-03-11 14:35:45,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,811 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 323 transitions. [2021-03-11 14:35:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:45,811 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,811 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561 [2021-03-11 14:35:45,812 INFO L428 AbstractCegarLoop]: === Iteration 563 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2085582518, now seen corresponding path program 559 times [2021-03-11 14:35:45,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700073499] [2021-03-11 14:35:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,850 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:45,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:45,872 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:45,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:45,893 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:45,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700073499] [2021-03-11 14:35:45,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:45,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343404274] [2021-03-11 14:35:45,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:45,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:45,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:45,914 INFO L87 Difference]: Start difference. First operand 123 states and 323 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,963 INFO L93 Difference]: Finished difference Result 215 states and 468 transitions. [2021-03-11 14:35:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:45,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,964 INFO L225 Difference]: With dead ends: 215 [2021-03-11 14:35:45,964 INFO L226 Difference]: Without dead ends: 199 [2021-03-11 14:35:45,964 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-03-11 14:35:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 123. [2021-03-11 14:35:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.622950819672131) internal successors, (320), 122 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 320 transitions. [2021-03-11 14:35:45,966 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 320 transitions. Word has length 19 [2021-03-11 14:35:45,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,966 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 320 transitions. [2021-03-11 14:35:45,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 320 transitions. [2021-03-11 14:35:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:45,966 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,966 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable562 [2021-03-11 14:35:45,966 INFO L428 AbstractCegarLoop]: === Iteration 564 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1826524292, now seen corresponding path program 560 times [2021-03-11 14:35:45,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780426496] [2021-03-11 14:35:45,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:46,005 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:46,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:46,028 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:46,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:46,049 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:46,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780426496] [2021-03-11 14:35:46,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:46,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950097134] [2021-03-11 14:35:46,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:46,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:46,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:46,070 INFO L87 Difference]: Start difference. First operand 123 states and 320 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,128 INFO L93 Difference]: Finished difference Result 209 states and 453 transitions. [2021-03-11 14:35:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:46,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:46,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,129 INFO L225 Difference]: With dead ends: 209 [2021-03-11 14:35:46,129 INFO L226 Difference]: Without dead ends: 196 [2021-03-11 14:35:46,129 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-03-11 14:35:46,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 120. [2021-03-11 14:35:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.630252100840336) internal successors, (313), 119 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 313 transitions. [2021-03-11 14:35:46,131 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 313 transitions. Word has length 19 [2021-03-11 14:35:46,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,131 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 313 transitions. [2021-03-11 14:35:46,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,131 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 313 transitions. [2021-03-11 14:35:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:46,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable563 [2021-03-11 14:35:46,131 INFO L428 AbstractCegarLoop]: === Iteration 565 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,132 INFO L82 PathProgramCache]: Analyzing trace with hash -991490930, now seen corresponding path program 561 times [2021-03-11 14:35:46,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005043064] [2021-03-11 14:35:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:46,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:46,170 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:46,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:46,186 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:46,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:46,207 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005043064] [2021-03-11 14:35:46,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:46,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758377396] [2021-03-11 14:35:46,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:46,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:46,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:46,228 INFO L87 Difference]: Start difference. First operand 120 states and 313 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,278 INFO L93 Difference]: Finished difference Result 213 states and 467 transitions. [2021-03-11 14:35:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:46,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,281 INFO L225 Difference]: With dead ends: 213 [2021-03-11 14:35:46,281 INFO L226 Difference]: Without dead ends: 197 [2021-03-11 14:35:46,281 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-03-11 14:35:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 126. [2021-03-11 14:35:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.592) internal successors, (324), 125 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 324 transitions. [2021-03-11 14:35:46,283 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 324 transitions. Word has length 19 [2021-03-11 14:35:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,283 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 324 transitions. [2021-03-11 14:35:46,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 324 transitions. [2021-03-11 14:35:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:46,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable564 [2021-03-11 14:35:46,283 INFO L428 AbstractCegarLoop]: === Iteration 566 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1967695680, now seen corresponding path program 562 times [2021-03-11 14:35:46,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806822154] [2021-03-11 14:35:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:46,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:46,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:46,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:46,338 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:46,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:46,359 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:46,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806822154] [2021-03-11 14:35:46,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:46,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538315618] [2021-03-11 14:35:46,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:46,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:46,380 INFO L87 Difference]: Start difference. First operand 126 states and 324 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,446 INFO L93 Difference]: Finished difference Result 201 states and 447 transitions. [2021-03-11 14:35:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:46,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,447 INFO L225 Difference]: With dead ends: 201 [2021-03-11 14:35:46,447 INFO L226 Difference]: Without dead ends: 182 [2021-03-11 14:35:46,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-03-11 14:35:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 120. [2021-03-11 14:35:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.6050420168067228) internal successors, (310), 119 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 310 transitions. [2021-03-11 14:35:46,448 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 310 transitions. Word has length 19 [2021-03-11 14:35:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,448 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 310 transitions. [2021-03-11 14:35:46,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 310 transitions. [2021-03-11 14:35:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:46,449 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,449 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable565 [2021-03-11 14:35:46,449 INFO L428 AbstractCegarLoop]: === Iteration 567 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1019871656, now seen corresponding path program 563 times [2021-03-11 14:35:46,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643567799] [2021-03-11 14:35:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,467 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:46,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:46,487 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:46,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:46,515 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:46,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:46,537 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:46,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643567799] [2021-03-11 14:35:46,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:46,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977447340] [2021-03-11 14:35:46,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:46,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:46,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:46,558 INFO L87 Difference]: Start difference. First operand 120 states and 310 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,609 INFO L93 Difference]: Finished difference Result 203 states and 440 transitions. [2021-03-11 14:35:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,610 INFO L225 Difference]: With dead ends: 203 [2021-03-11 14:35:46,610 INFO L226 Difference]: Without dead ends: 193 [2021-03-11 14:35:46,610 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-03-11 14:35:46,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 122. [2021-03-11 14:35:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.5867768595041323) internal successors, (313), 121 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 313 transitions. [2021-03-11 14:35:46,611 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 313 transitions. Word has length 19 [2021-03-11 14:35:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,611 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 313 transitions. [2021-03-11 14:35:46,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 313 transitions. [2021-03-11 14:35:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:46,611 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,612 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable566 [2021-03-11 14:35:46,612 INFO L428 AbstractCegarLoop]: === Iteration 568 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1785690644, now seen corresponding path program 564 times [2021-03-11 14:35:46,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368565818] [2021-03-11 14:35:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,629 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:46,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:46,650 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:46,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:46,678 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:46,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:46,699 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:46,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368565818] [2021-03-11 14:35:46,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:46,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033457480] [2021-03-11 14:35:46,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:46,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:46,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:46,720 INFO L87 Difference]: Start difference. First operand 122 states and 313 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,780 INFO L93 Difference]: Finished difference Result 197 states and 436 transitions. [2021-03-11 14:35:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:46,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,781 INFO L225 Difference]: With dead ends: 197 [2021-03-11 14:35:46,781 INFO L226 Difference]: Without dead ends: 179 [2021-03-11 14:35:46,781 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-03-11 14:35:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 117. [2021-03-11 14:35:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.6120689655172415) internal successors, (303), 116 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 303 transitions. [2021-03-11 14:35:46,783 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 303 transitions. Word has length 19 [2021-03-11 14:35:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,783 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 303 transitions. [2021-03-11 14:35:46,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 303 transitions. [2021-03-11 14:35:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:46,783 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,783 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567 [2021-03-11 14:35:46,783 INFO L428 AbstractCegarLoop]: === Iteration 569 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1759986294, now seen corresponding path program 565 times [2021-03-11 14:35:46,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697537185] [2021-03-11 14:35:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:46,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:46,812 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:46,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:46,839 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:46,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:46,861 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:46,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697537185] [2021-03-11 14:35:46,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:46,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449986337] [2021-03-11 14:35:46,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:46,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:46,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:46,881 INFO L87 Difference]: Start difference. First operand 117 states and 303 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,932 INFO L93 Difference]: Finished difference Result 207 states and 450 transitions. [2021-03-11 14:35:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:46,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,933 INFO L225 Difference]: With dead ends: 207 [2021-03-11 14:35:46,933 INFO L226 Difference]: Without dead ends: 191 [2021-03-11 14:35:46,933 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-03-11 14:35:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 117. [2021-03-11 14:35:46,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.5689655172413794) internal successors, (298), 116 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 298 transitions. [2021-03-11 14:35:46,935 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 298 transitions. Word has length 19 [2021-03-11 14:35:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,935 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 298 transitions. [2021-03-11 14:35:46,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 298 transitions. [2021-03-11 14:35:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:46,935 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,935 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568 [2021-03-11 14:35:46,935 INFO L428 AbstractCegarLoop]: === Iteration 570 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1783918908, now seen corresponding path program 566 times [2021-03-11 14:35:46,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061607600] [2021-03-11 14:35:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:46,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:46,964 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:46,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:46,992 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:46,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:47,012 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:47,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061607600] [2021-03-11 14:35:47,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:47,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843125830] [2021-03-11 14:35:47,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:47,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:47,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:47,033 INFO L87 Difference]: Start difference. First operand 117 states and 298 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,101 INFO L93 Difference]: Finished difference Result 203 states and 438 transitions. [2021-03-11 14:35:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:47,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,102 INFO L225 Difference]: With dead ends: 203 [2021-03-11 14:35:47,102 INFO L226 Difference]: Without dead ends: 186 [2021-03-11 14:35:47,102 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-03-11 14:35:47,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 112. [2021-03-11 14:35:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 284 transitions. [2021-03-11 14:35:47,103 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 284 transitions. Word has length 19 [2021-03-11 14:35:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,104 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 284 transitions. [2021-03-11 14:35:47,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 284 transitions. [2021-03-11 14:35:47,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:47,104 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,104 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable569 [2021-03-11 14:35:47,104 INFO L428 AbstractCegarLoop]: === Iteration 571 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,104 INFO L82 PathProgramCache]: Analyzing trace with hash 934543148, now seen corresponding path program 567 times [2021-03-11 14:35:47,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189180912] [2021-03-11 14:35:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,122 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:47,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:47,134 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:47,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:47,150 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:47,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:47,172 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:47,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189180912] [2021-03-11 14:35:47,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:47,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055181330] [2021-03-11 14:35:47,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:47,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:47,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:47,193 INFO L87 Difference]: Start difference. First operand 112 states and 284 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,240 INFO L93 Difference]: Finished difference Result 195 states and 418 transitions. [2021-03-11 14:35:47,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:47,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:47,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,240 INFO L225 Difference]: With dead ends: 195 [2021-03-11 14:35:47,240 INFO L226 Difference]: Without dead ends: 179 [2021-03-11 14:35:47,241 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-03-11 14:35:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 104. [2021-03-11 14:35:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.5533980582524274) internal successors, (263), 103 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 263 transitions. [2021-03-11 14:35:47,242 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 263 transitions. Word has length 19 [2021-03-11 14:35:47,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,242 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 263 transitions. [2021-03-11 14:35:47,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 263 transitions. [2021-03-11 14:35:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:47,242 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,242 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570 [2021-03-11 14:35:47,242 INFO L428 AbstractCegarLoop]: === Iteration 572 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,243 INFO L82 PathProgramCache]: Analyzing trace with hash -41661602, now seen corresponding path program 568 times [2021-03-11 14:35:47,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095038883] [2021-03-11 14:35:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,260 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:47,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:47,272 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:47,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:47,288 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:47,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:47,308 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:47,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095038883] [2021-03-11 14:35:47,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:47,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704452904] [2021-03-11 14:35:47,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:47,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:47,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:47,329 INFO L87 Difference]: Start difference. First operand 104 states and 263 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,398 INFO L93 Difference]: Finished difference Result 183 states and 398 transitions. [2021-03-11 14:35:47,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:47,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:47,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,398 INFO L225 Difference]: With dead ends: 183 [2021-03-11 14:35:47,398 INFO L226 Difference]: Without dead ends: 164 [2021-03-11 14:35:47,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-03-11 14:35:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 98. [2021-03-11 14:35:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.5463917525773194) internal successors, (247), 97 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 247 transitions. [2021-03-11 14:35:47,400 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 247 transitions. Word has length 19 [2021-03-11 14:35:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,400 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 247 transitions. [2021-03-11 14:35:47,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 247 transitions. [2021-03-11 14:35:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:47,400 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,400 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571 [2021-03-11 14:35:47,400 INFO L428 AbstractCegarLoop]: === Iteration 573 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1586342730, now seen corresponding path program 569 times [2021-03-11 14:35:47,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304977279] [2021-03-11 14:35:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:47,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:47,428 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:47,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:47,444 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:47,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:47,465 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:47,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304977279] [2021-03-11 14:35:47,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:47,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935623621] [2021-03-11 14:35:47,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:47,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:47,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:47,485 INFO L87 Difference]: Start difference. First operand 98 states and 247 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,558 INFO L93 Difference]: Finished difference Result 180 states and 392 transitions. [2021-03-11 14:35:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:47,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,559 INFO L225 Difference]: With dead ends: 180 [2021-03-11 14:35:47,559 INFO L226 Difference]: Without dead ends: 168 [2021-03-11 14:35:47,559 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-03-11 14:35:47,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 102. [2021-03-11 14:35:47,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.5247524752475248) internal successors, (255), 101 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 255 transitions. [2021-03-11 14:35:47,561 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 255 transitions. Word has length 19 [2021-03-11 14:35:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,561 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 255 transitions. [2021-03-11 14:35:47,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,561 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 255 transitions. [2021-03-11 14:35:47,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:47,561 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,561 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572 [2021-03-11 14:35:47,561 INFO L428 AbstractCegarLoop]: === Iteration 574 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1849750036, now seen corresponding path program 570 times [2021-03-11 14:35:47,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516729748] [2021-03-11 14:35:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:47,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:47,590 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:47,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:47,605 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:47,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:47,626 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:47,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516729748] [2021-03-11 14:35:47,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:47,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255059688] [2021-03-11 14:35:47,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:47,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:47,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:47,646 INFO L87 Difference]: Start difference. First operand 102 states and 255 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,715 INFO L93 Difference]: Finished difference Result 167 states and 371 transitions. [2021-03-11 14:35:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:47,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,716 INFO L225 Difference]: With dead ends: 167 [2021-03-11 14:35:47,716 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 14:35:47,716 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 14:35:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 93. [2021-03-11 14:35:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.5543478260869565) internal successors, (235), 92 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 235 transitions. [2021-03-11 14:35:47,717 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 235 transitions. Word has length 19 [2021-03-11 14:35:47,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,717 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 235 transitions. [2021-03-11 14:35:47,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 235 transitions. [2021-03-11 14:35:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:47,718 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,718 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable573 [2021-03-11 14:35:47,718 INFO L428 AbstractCegarLoop]: === Iteration 575 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1422262942, now seen corresponding path program 571 times [2021-03-11 14:35:47,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068825877] [2021-03-11 14:35:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:47,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:47,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:47,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:47,762 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:47,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:47,784 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:47,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068825877] [2021-03-11 14:35:47,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:47,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427313264] [2021-03-11 14:35:47,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:47,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:47,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:47,804 INFO L87 Difference]: Start difference. First operand 93 states and 235 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,859 INFO L93 Difference]: Finished difference Result 172 states and 373 transitions. [2021-03-11 14:35:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:47,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:47,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,860 INFO L225 Difference]: With dead ends: 172 [2021-03-11 14:35:47,860 INFO L226 Difference]: Without dead ends: 162 [2021-03-11 14:35:47,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-03-11 14:35:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 97. [2021-03-11 14:35:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.5520833333333335) internal successors, (245), 96 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 245 transitions. [2021-03-11 14:35:47,861 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 245 transitions. Word has length 19 [2021-03-11 14:35:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,861 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 245 transitions. [2021-03-11 14:35:47,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 245 transitions. [2021-03-11 14:35:47,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:47,862 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,862 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable574 [2021-03-11 14:35:47,862 INFO L428 AbstractCegarLoop]: === Iteration 576 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,862 INFO L82 PathProgramCache]: Analyzing trace with hash -2128001856, now seen corresponding path program 572 times [2021-03-11 14:35:47,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607761120] [2021-03-11 14:35:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:47,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:47,890 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:47,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:47,906 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:47,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:47,927 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:47,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607761120] [2021-03-11 14:35:47,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:47,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84402411] [2021-03-11 14:35:47,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:47,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:47,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:47,947 INFO L87 Difference]: Start difference. First operand 97 states and 245 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,008 INFO L93 Difference]: Finished difference Result 174 states and 376 transitions. [2021-03-11 14:35:48,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:48,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:48,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,008 INFO L225 Difference]: With dead ends: 174 [2021-03-11 14:35:48,008 INFO L226 Difference]: Without dead ends: 160 [2021-03-11 14:35:48,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-03-11 14:35:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 95. [2021-03-11 14:35:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.5531914893617023) internal successors, (240), 94 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 240 transitions. [2021-03-11 14:35:48,010 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 240 transitions. Word has length 19 [2021-03-11 14:35:48,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,010 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 240 transitions. [2021-03-11 14:35:48,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,010 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 240 transitions. [2021-03-11 14:35:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:48,010 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,010 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable575 [2021-03-11 14:35:48,010 INFO L428 AbstractCegarLoop]: === Iteration 577 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1261763396, now seen corresponding path program 573 times [2021-03-11 14:35:48,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996499867] [2021-03-11 14:35:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:48,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:48,041 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:48,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:48,069 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:48,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:48,090 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:48,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996499867] [2021-03-11 14:35:48,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:48,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215364444] [2021-03-11 14:35:48,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:48,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:48,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:48,111 INFO L87 Difference]: Start difference. First operand 95 states and 240 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,167 INFO L93 Difference]: Finished difference Result 168 states and 363 transitions. [2021-03-11 14:35:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:48,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:48,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,167 INFO L225 Difference]: With dead ends: 168 [2021-03-11 14:35:48,168 INFO L226 Difference]: Without dead ends: 158 [2021-03-11 14:35:48,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-03-11 14:35:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 97. [2021-03-11 14:35:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.53125) internal successors, (243), 96 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 243 transitions. [2021-03-11 14:35:48,169 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 243 transitions. Word has length 19 [2021-03-11 14:35:48,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,169 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 243 transitions. [2021-03-11 14:35:48,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,169 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 243 transitions. [2021-03-11 14:35:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:48,169 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,169 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable576 [2021-03-11 14:35:48,169 INFO L428 AbstractCegarLoop]: === Iteration 578 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,169 INFO L82 PathProgramCache]: Analyzing trace with hash 227641600, now seen corresponding path program 574 times [2021-03-11 14:35:48,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281597425] [2021-03-11 14:35:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:48,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:48,198 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:48,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:48,226 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:48,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:48,246 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:48,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281597425] [2021-03-11 14:35:48,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:48,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025129576] [2021-03-11 14:35:48,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:48,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:48,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:48,266 INFO L87 Difference]: Start difference. First operand 97 states and 243 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,337 INFO L93 Difference]: Finished difference Result 162 states and 359 transitions. [2021-03-11 14:35:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:48,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,337 INFO L225 Difference]: With dead ends: 162 [2021-03-11 14:35:48,337 INFO L226 Difference]: Without dead ends: 147 [2021-03-11 14:35:48,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-03-11 14:35:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 95. [2021-03-11 14:35:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.5319148936170213) internal successors, (238), 94 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 238 transitions. [2021-03-11 14:35:48,339 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 238 transitions. Word has length 19 [2021-03-11 14:35:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,339 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 238 transitions. [2021-03-11 14:35:48,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 238 transitions. [2021-03-11 14:35:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:48,339 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,339 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable577 [2021-03-11 14:35:48,339 INFO L428 AbstractCegarLoop]: === Iteration 579 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1093880060, now seen corresponding path program 575 times [2021-03-11 14:35:48,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624337360] [2021-03-11 14:35:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,356 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:48,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:48,368 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:48,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:48,383 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:48,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:48,404 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:48,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624337360] [2021-03-11 14:35:48,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:48,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213259936] [2021-03-11 14:35:48,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:48,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:48,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:48,424 INFO L87 Difference]: Start difference. First operand 95 states and 238 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,493 INFO L93 Difference]: Finished difference Result 155 states and 344 transitions. [2021-03-11 14:35:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,494 INFO L225 Difference]: With dead ends: 155 [2021-03-11 14:35:48,494 INFO L226 Difference]: Without dead ends: 143 [2021-03-11 14:35:48,494 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-03-11 14:35:48,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 99. [2021-03-11 14:35:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.510204081632653) internal successors, (246), 98 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 246 transitions. [2021-03-11 14:35:48,495 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 246 transitions. Word has length 19 [2021-03-11 14:35:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,495 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 246 transitions. [2021-03-11 14:35:48,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 246 transitions. [2021-03-11 14:35:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:48,495 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,495 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable578 [2021-03-11 14:35:48,496 INFO L428 AbstractCegarLoop]: === Iteration 580 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1838582558, now seen corresponding path program 576 times [2021-03-11 14:35:48,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773633276] [2021-03-11 14:35:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:48,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:48,524 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:48,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:48,539 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:48,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:48,560 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:48,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773633276] [2021-03-11 14:35:48,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:48,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489992824] [2021-03-11 14:35:48,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:48,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:48,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:48,580 INFO L87 Difference]: Start difference. First operand 99 states and 246 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,642 INFO L93 Difference]: Finished difference Result 142 states and 323 transitions. [2021-03-11 14:35:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,643 INFO L225 Difference]: With dead ends: 142 [2021-03-11 14:35:48,643 INFO L226 Difference]: Without dead ends: 120 [2021-03-11 14:35:48,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-03-11 14:35:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 90. [2021-03-11 14:35:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.5730337078651684) internal successors, (229), 89 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 229 transitions. [2021-03-11 14:35:48,644 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 229 transitions. Word has length 19 [2021-03-11 14:35:48,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,644 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 229 transitions. [2021-03-11 14:35:48,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 229 transitions. [2021-03-11 14:35:48,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:48,644 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,644 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable579 [2021-03-11 14:35:48,644 INFO L428 AbstractCegarLoop]: === Iteration 581 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1776969654, now seen corresponding path program 577 times [2021-03-11 14:35:48,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229092887] [2021-03-11 14:35:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,654 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:48,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:48,662 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:48,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:48,674 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:48,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:48,690 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:48,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:48,711 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:48,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229092887] [2021-03-11 14:35:48,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:48,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688612268] [2021-03-11 14:35:48,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:48,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:48,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:48,731 INFO L87 Difference]: Start difference. First operand 90 states and 229 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,801 INFO L93 Difference]: Finished difference Result 165 states and 357 transitions. [2021-03-11 14:35:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:48,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,802 INFO L225 Difference]: With dead ends: 165 [2021-03-11 14:35:48,802 INFO L226 Difference]: Without dead ends: 155 [2021-03-11 14:35:48,802 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-03-11 14:35:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 93. [2021-03-11 14:35:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.5760869565217392) internal successors, (237), 92 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions. [2021-03-11 14:35:48,803 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 19 [2021-03-11 14:35:48,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,803 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions. [2021-03-11 14:35:48,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,803 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions. [2021-03-11 14:35:48,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:48,803 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,804 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable580 [2021-03-11 14:35:48,804 INFO L428 AbstractCegarLoop]: === Iteration 582 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2016611992, now seen corresponding path program 578 times [2021-03-11 14:35:48,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472256943] [2021-03-11 14:35:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,816 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:48,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:48,824 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:48,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:48,836 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:48,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:48,853 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:48,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:48,874 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:48,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472256943] [2021-03-11 14:35:48,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:48,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530609599] [2021-03-11 14:35:48,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:48,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:48,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:48,895 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,950 INFO L93 Difference]: Finished difference Result 165 states and 356 transitions. [2021-03-11 14:35:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:48,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,950 INFO L225 Difference]: With dead ends: 165 [2021-03-11 14:35:48,951 INFO L226 Difference]: Without dead ends: 154 [2021-03-11 14:35:48,951 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-03-11 14:35:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 92. [2021-03-11 14:35:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5824175824175826) internal successors, (235), 91 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions. [2021-03-11 14:35:48,952 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 19 [2021-03-11 14:35:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,952 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions. [2021-03-11 14:35:48,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,952 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions. [2021-03-11 14:35:48,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:48,952 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,952 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable581 [2021-03-11 14:35:48,952 INFO L428 AbstractCegarLoop]: === Iteration 583 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,953 INFO L82 PathProgramCache]: Analyzing trace with hash -166028696, now seen corresponding path program 579 times [2021-03-11 14:35:48,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26190823] [2021-03-11 14:35:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,963 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:48,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:48,971 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:48,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:48,983 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:48,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:48,999 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:48,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:49,020 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:49,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26190823] [2021-03-11 14:35:49,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:49,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893811340] [2021-03-11 14:35:49,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:49,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:49,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:49,041 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,111 INFO L93 Difference]: Finished difference Result 168 states and 364 transitions. [2021-03-11 14:35:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:49,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:49,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,112 INFO L225 Difference]: With dead ends: 168 [2021-03-11 14:35:49,112 INFO L226 Difference]: Without dead ends: 158 [2021-03-11 14:35:49,112 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-03-11 14:35:49,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 94. [2021-03-11 14:35:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.5591397849462365) internal successors, (238), 93 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 238 transitions. [2021-03-11 14:35:49,113 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 238 transitions. Word has length 19 [2021-03-11 14:35:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,114 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 238 transitions. [2021-03-11 14:35:49,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,114 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 238 transitions. [2021-03-11 14:35:49,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:49,114 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,114 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable582 [2021-03-11 14:35:49,114 INFO L428 AbstractCegarLoop]: === Iteration 584 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash -811058844, now seen corresponding path program 580 times [2021-03-11 14:35:49,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041991900] [2021-03-11 14:35:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:49,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:49,131 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:49,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:49,143 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:49,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:49,159 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:49,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:49,180 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:49,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041991900] [2021-03-11 14:35:49,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:49,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22795296] [2021-03-11 14:35:49,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:49,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:49,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:49,200 INFO L87 Difference]: Start difference. First operand 94 states and 238 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,270 INFO L93 Difference]: Finished difference Result 170 states and 367 transitions. [2021-03-11 14:35:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:49,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,271 INFO L225 Difference]: With dead ends: 170 [2021-03-11 14:35:49,271 INFO L226 Difference]: Without dead ends: 156 [2021-03-11 14:35:49,271 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-03-11 14:35:49,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 92. [2021-03-11 14:35:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5714285714285716) internal successors, (234), 91 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 234 transitions. [2021-03-11 14:35:49,273 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 234 transitions. Word has length 19 [2021-03-11 14:35:49,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,273 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 234 transitions. [2021-03-11 14:35:49,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 234 transitions. [2021-03-11 14:35:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:49,273 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable583 [2021-03-11 14:35:49,273 INFO L428 AbstractCegarLoop]: === Iteration 585 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1205269924, now seen corresponding path program 581 times [2021-03-11 14:35:49,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486360210] [2021-03-11 14:35:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:49,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:49,291 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:49,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:49,302 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:49,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:49,318 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:49,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:49,339 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:49,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486360210] [2021-03-11 14:35:49,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:49,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168103736] [2021-03-11 14:35:49,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:49,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:49,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:49,360 INFO L87 Difference]: Start difference. First operand 92 states and 234 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,413 INFO L93 Difference]: Finished difference Result 168 states and 363 transitions. [2021-03-11 14:35:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:49,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:49,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,413 INFO L225 Difference]: With dead ends: 168 [2021-03-11 14:35:49,413 INFO L226 Difference]: Without dead ends: 158 [2021-03-11 14:35:49,413 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-03-11 14:35:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 94. [2021-03-11 14:35:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.5483870967741935) internal successors, (237), 93 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 237 transitions. [2021-03-11 14:35:49,415 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 237 transitions. Word has length 19 [2021-03-11 14:35:49,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,415 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 237 transitions. [2021-03-11 14:35:49,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,415 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 237 transitions. [2021-03-11 14:35:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:49,415 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,415 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable584 [2021-03-11 14:35:49,415 INFO L428 AbstractCegarLoop]: === Iteration 586 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1949972422, now seen corresponding path program 582 times [2021-03-11 14:35:49,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878031407] [2021-03-11 14:35:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:49,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:49,440 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:49,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:49,456 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:49,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:49,473 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:49,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:49,495 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:49,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878031407] [2021-03-11 14:35:49,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:49,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177681274] [2021-03-11 14:35:49,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:49,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:49,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:49,515 INFO L87 Difference]: Start difference. First operand 94 states and 237 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,585 INFO L93 Difference]: Finished difference Result 170 states and 366 transitions. [2021-03-11 14:35:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:49,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,586 INFO L225 Difference]: With dead ends: 170 [2021-03-11 14:35:49,586 INFO L226 Difference]: Without dead ends: 155 [2021-03-11 14:35:49,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-03-11 14:35:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 91. [2021-03-11 14:35:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.577777777777778) internal successors, (232), 90 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 232 transitions. [2021-03-11 14:35:49,587 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 232 transitions. Word has length 19 [2021-03-11 14:35:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,587 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 232 transitions. [2021-03-11 14:35:49,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 232 transitions. [2021-03-11 14:35:49,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:49,587 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,587 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585 [2021-03-11 14:35:49,587 INFO L428 AbstractCegarLoop]: === Iteration 587 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,588 INFO L82 PathProgramCache]: Analyzing trace with hash 917559788, now seen corresponding path program 583 times [2021-03-11 14:35:49,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716080652] [2021-03-11 14:35:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:49,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:49,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:49,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:49,617 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:49,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:49,633 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:49,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:49,654 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:49,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716080652] [2021-03-11 14:35:49,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:49,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123872915] [2021-03-11 14:35:49,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:49,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:49,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:49,675 INFO L87 Difference]: Start difference. First operand 91 states and 232 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,746 INFO L93 Difference]: Finished difference Result 163 states and 351 transitions. [2021-03-11 14:35:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:49,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:49,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,746 INFO L225 Difference]: With dead ends: 163 [2021-03-11 14:35:49,746 INFO L226 Difference]: Without dead ends: 153 [2021-03-11 14:35:49,747 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-03-11 14:35:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 93. [2021-03-11 14:35:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.5652173913043477) internal successors, (236), 92 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 236 transitions. [2021-03-11 14:35:49,748 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 236 transitions. Word has length 19 [2021-03-11 14:35:49,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,748 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 236 transitions. [2021-03-11 14:35:49,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,748 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 236 transitions. [2021-03-11 14:35:49,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:49,748 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,748 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable586 [2021-03-11 14:35:49,748 INFO L428 AbstractCegarLoop]: === Iteration 588 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,748 INFO L82 PathProgramCache]: Analyzing trace with hash 677917450, now seen corresponding path program 584 times [2021-03-11 14:35:49,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592987837] [2021-03-11 14:35:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:49,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:49,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:49,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:49,782 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:49,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:49,800 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:49,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:49,822 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:49,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592987837] [2021-03-11 14:35:49,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:49,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291968094] [2021-03-11 14:35:49,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:49,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:49,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:49,844 INFO L87 Difference]: Start difference. First operand 93 states and 236 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,902 INFO L93 Difference]: Finished difference Result 163 states and 350 transitions. [2021-03-11 14:35:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:49,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:49,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,903 INFO L225 Difference]: With dead ends: 163 [2021-03-11 14:35:49,903 INFO L226 Difference]: Without dead ends: 152 [2021-03-11 14:35:49,903 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-03-11 14:35:49,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 92. [2021-03-11 14:35:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5714285714285716) internal successors, (234), 91 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 234 transitions. [2021-03-11 14:35:49,904 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 234 transitions. Word has length 19 [2021-03-11 14:35:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,904 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 234 transitions. [2021-03-11 14:35:49,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 234 transitions. [2021-03-11 14:35:49,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:49,904 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,904 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable587 [2021-03-11 14:35:49,904 INFO L428 AbstractCegarLoop]: === Iteration 589 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,905 INFO L82 PathProgramCache]: Analyzing trace with hash -155525592, now seen corresponding path program 585 times [2021-03-11 14:35:49,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139292204] [2021-03-11 14:35:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,914 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:49,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:49,922 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:49,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:49,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:49,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:49,948 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:49,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:49,969 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:49,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139292204] [2021-03-11 14:35:49,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:49,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194179093] [2021-03-11 14:35:49,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:49,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:49,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:49,990 INFO L87 Difference]: Start difference. First operand 92 states and 234 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,061 INFO L93 Difference]: Finished difference Result 165 states and 357 transitions. [2021-03-11 14:35:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:50,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:50,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,062 INFO L225 Difference]: With dead ends: 165 [2021-03-11 14:35:50,062 INFO L226 Difference]: Without dead ends: 155 [2021-03-11 14:35:50,062 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-03-11 14:35:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 94. [2021-03-11 14:35:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.5483870967741935) internal successors, (237), 93 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 237 transitions. [2021-03-11 14:35:50,063 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 237 transitions. Word has length 19 [2021-03-11 14:35:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,063 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 237 transitions. [2021-03-11 14:35:50,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 237 transitions. [2021-03-11 14:35:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:50,063 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,063 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable588 [2021-03-11 14:35:50,063 INFO L428 AbstractCegarLoop]: === Iteration 590 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,063 INFO L82 PathProgramCache]: Analyzing trace with hash 799453412, now seen corresponding path program 586 times [2021-03-11 14:35:50,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521145400] [2021-03-11 14:35:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:50,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:50,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:50,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:50,093 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:50,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:50,112 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:50,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:50,132 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:50,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521145400] [2021-03-11 14:35:50,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:50,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536752710] [2021-03-11 14:35:50,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:50,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:50,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:50,153 INFO L87 Difference]: Start difference. First operand 94 states and 237 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,225 INFO L93 Difference]: Finished difference Result 159 states and 353 transitions. [2021-03-11 14:35:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:50,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,226 INFO L225 Difference]: With dead ends: 159 [2021-03-11 14:35:50,226 INFO L226 Difference]: Without dead ends: 144 [2021-03-11 14:35:50,226 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-03-11 14:35:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2021-03-11 14:35:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5604395604395602) internal successors, (233), 91 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 233 transitions. [2021-03-11 14:35:50,227 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 233 transitions. Word has length 19 [2021-03-11 14:35:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,227 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 233 transitions. [2021-03-11 14:35:50,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 233 transitions. [2021-03-11 14:35:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:50,228 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,228 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable589 [2021-03-11 14:35:50,228 INFO L428 AbstractCegarLoop]: === Iteration 591 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1215773028, now seen corresponding path program 587 times [2021-03-11 14:35:50,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322107167] [2021-03-11 14:35:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:50,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:50,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:50,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:50,258 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:50,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:50,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:50,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:50,306 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:50,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322107167] [2021-03-11 14:35:50,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:50,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881625592] [2021-03-11 14:35:50,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:50,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:50,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:50,326 INFO L87 Difference]: Start difference. First operand 92 states and 233 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,381 INFO L93 Difference]: Finished difference Result 165 states and 356 transitions. [2021-03-11 14:35:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:50,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,381 INFO L225 Difference]: With dead ends: 165 [2021-03-11 14:35:50,381 INFO L226 Difference]: Without dead ends: 155 [2021-03-11 14:35:50,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-03-11 14:35:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 94. [2021-03-11 14:35:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.5376344086021505) internal successors, (236), 93 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 236 transitions. [2021-03-11 14:35:50,383 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 236 transitions. Word has length 19 [2021-03-11 14:35:50,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,383 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 236 transitions. [2021-03-11 14:35:50,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,383 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 236 transitions. [2021-03-11 14:35:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:50,383 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable590 [2021-03-11 14:35:50,383 INFO L428 AbstractCegarLoop]: === Iteration 592 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1589789272, now seen corresponding path program 588 times [2021-03-11 14:35:50,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316650356] [2021-03-11 14:35:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,393 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:50,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:50,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:50,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:50,412 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:50,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:50,438 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:50,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:50,458 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:50,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316650356] [2021-03-11 14:35:50,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:50,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832197860] [2021-03-11 14:35:50,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:50,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:50,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:50,479 INFO L87 Difference]: Start difference. First operand 94 states and 236 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,542 INFO L93 Difference]: Finished difference Result 159 states and 352 transitions. [2021-03-11 14:35:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:50,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:50,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,542 INFO L225 Difference]: With dead ends: 159 [2021-03-11 14:35:50,542 INFO L226 Difference]: Without dead ends: 143 [2021-03-11 14:35:50,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-03-11 14:35:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 91. [2021-03-11 14:35:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.566666666666667) internal successors, (231), 90 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 231 transitions. [2021-03-11 14:35:50,544 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 231 transitions. Word has length 19 [2021-03-11 14:35:50,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,544 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 231 transitions. [2021-03-11 14:35:50,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,544 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 231 transitions. [2021-03-11 14:35:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:50,544 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,544 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable591 [2021-03-11 14:35:50,544 INFO L428 AbstractCegarLoop]: === Iteration 593 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,544 INFO L82 PathProgramCache]: Analyzing trace with hash 928062892, now seen corresponding path program 589 times [2021-03-11 14:35:50,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143844756] [2021-03-11 14:35:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,554 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:50,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:50,562 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:50,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:50,573 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:50,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:50,589 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:50,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:50,610 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:50,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143844756] [2021-03-11 14:35:50,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:50,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637882957] [2021-03-11 14:35:50,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:50,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:50,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:50,631 INFO L87 Difference]: Start difference. First operand 91 states and 231 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,696 INFO L93 Difference]: Finished difference Result 161 states and 347 transitions. [2021-03-11 14:35:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:50,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,697 INFO L225 Difference]: With dead ends: 161 [2021-03-11 14:35:50,697 INFO L226 Difference]: Without dead ends: 151 [2021-03-11 14:35:50,697 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-03-11 14:35:50,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 95. [2021-03-11 14:35:50,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.5638297872340425) internal successors, (241), 94 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 241 transitions. [2021-03-11 14:35:50,698 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 241 transitions. Word has length 19 [2021-03-11 14:35:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,699 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 241 transitions. [2021-03-11 14:35:50,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,699 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 241 transitions. [2021-03-11 14:35:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:50,699 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,699 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable592 [2021-03-11 14:35:50,699 INFO L428 AbstractCegarLoop]: === Iteration 594 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,699 INFO L82 PathProgramCache]: Analyzing trace with hash 283032744, now seen corresponding path program 590 times [2021-03-11 14:35:50,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078334480] [2021-03-11 14:35:50,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,709 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:50,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:50,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:50,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:50,728 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:50,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:50,744 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:50,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:50,765 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:50,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078334480] [2021-03-11 14:35:50,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:50,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660702379] [2021-03-11 14:35:50,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:50,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:50,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:50,785 INFO L87 Difference]: Start difference. First operand 95 states and 241 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,855 INFO L93 Difference]: Finished difference Result 163 states and 350 transitions. [2021-03-11 14:35:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:50,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,856 INFO L225 Difference]: With dead ends: 163 [2021-03-11 14:35:50,856 INFO L226 Difference]: Without dead ends: 149 [2021-03-11 14:35:50,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-03-11 14:35:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 93. [2021-03-11 14:35:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.5652173913043477) internal successors, (236), 92 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 236 transitions. [2021-03-11 14:35:50,857 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 236 transitions. Word has length 19 [2021-03-11 14:35:50,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,858 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 236 transitions. [2021-03-11 14:35:50,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 236 transitions. [2021-03-11 14:35:50,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:50,858 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,858 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable593 [2021-03-11 14:35:50,858 INFO L428 AbstractCegarLoop]: === Iteration 595 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1755963446, now seen corresponding path program 591 times [2021-03-11 14:35:50,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081603130] [2021-03-11 14:35:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,868 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:50,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:50,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:50,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:50,887 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:50,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:50,902 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:50,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:50,923 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:50,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081603130] [2021-03-11 14:35:50,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:50,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905768419] [2021-03-11 14:35:50,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:50,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:50,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:50,944 INFO L87 Difference]: Start difference. First operand 93 states and 236 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,009 INFO L93 Difference]: Finished difference Result 158 states and 339 transitions. [2021-03-11 14:35:51,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:51,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,010 INFO L225 Difference]: With dead ends: 158 [2021-03-11 14:35:51,010 INFO L226 Difference]: Without dead ends: 148 [2021-03-11 14:35:51,010 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-03-11 14:35:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 95. [2021-03-11 14:35:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.5425531914893615) internal successors, (239), 94 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 239 transitions. [2021-03-11 14:35:51,011 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 239 transitions. Word has length 19 [2021-03-11 14:35:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,012 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 239 transitions. [2021-03-11 14:35:51,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 239 transitions. [2021-03-11 14:35:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:51,012 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,012 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable594 [2021-03-11 14:35:51,012 INFO L428 AbstractCegarLoop]: === Iteration 596 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,012 INFO L82 PathProgramCache]: Analyzing trace with hash -800984442, now seen corresponding path program 592 times [2021-03-11 14:35:51,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165260353] [2021-03-11 14:35:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:51,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:51,030 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:51,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:51,041 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:51,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:51,056 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:51,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:51,077 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:51,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165260353] [2021-03-11 14:35:51,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:51,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937005982] [2021-03-11 14:35:51,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:51,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:51,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:51,098 INFO L87 Difference]: Start difference. First operand 95 states and 239 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,170 INFO L93 Difference]: Finished difference Result 152 states and 335 transitions. [2021-03-11 14:35:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:51,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,170 INFO L225 Difference]: With dead ends: 152 [2021-03-11 14:35:51,170 INFO L226 Difference]: Without dead ends: 137 [2021-03-11 14:35:51,170 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-03-11 14:35:51,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 93. [2021-03-11 14:35:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.5434782608695654) internal successors, (234), 92 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 234 transitions. [2021-03-11 14:35:51,172 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 234 transitions. Word has length 19 [2021-03-11 14:35:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,172 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 234 transitions. [2021-03-11 14:35:51,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 234 transitions. [2021-03-11 14:35:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:51,172 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,172 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable595 [2021-03-11 14:35:51,172 INFO L428 AbstractCegarLoop]: === Iteration 597 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,172 INFO L82 PathProgramCache]: Analyzing trace with hash -177389204, now seen corresponding path program 593 times [2021-03-11 14:35:51,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678875211] [2021-03-11 14:35:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,182 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:51,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:51,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:51,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:51,201 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:51,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:51,217 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:51,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:51,238 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:51,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678875211] [2021-03-11 14:35:51,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:51,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874591248] [2021-03-11 14:35:51,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:51,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:51,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:51,258 INFO L87 Difference]: Start difference. First operand 93 states and 234 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,320 INFO L93 Difference]: Finished difference Result 153 states and 340 transitions. [2021-03-11 14:35:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:51,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:51,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,321 INFO L225 Difference]: With dead ends: 153 [2021-03-11 14:35:51,321 INFO L226 Difference]: Without dead ends: 141 [2021-03-11 14:35:51,321 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-03-11 14:35:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 97. [2021-03-11 14:35:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.5208333333333335) internal successors, (242), 96 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 242 transitions. [2021-03-11 14:35:51,322 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 242 transitions. Word has length 19 [2021-03-11 14:35:51,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,322 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 242 transitions. [2021-03-11 14:35:51,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,323 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 242 transitions. [2021-03-11 14:35:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:51,323 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,323 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596 [2021-03-11 14:35:51,323 INFO L428 AbstractCegarLoop]: === Iteration 598 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash 677917450, now seen corresponding path program 594 times [2021-03-11 14:35:51,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41789887] [2021-03-11 14:35:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,336 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:51,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:51,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:51,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:51,357 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:51,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:51,373 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:51,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:51,396 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:51,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41789887] [2021-03-11 14:35:51,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:51,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382154755] [2021-03-11 14:35:51,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:51,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:51,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:51,417 INFO L87 Difference]: Start difference. First operand 97 states and 242 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,486 INFO L93 Difference]: Finished difference Result 140 states and 319 transitions. [2021-03-11 14:35:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:51,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,487 INFO L225 Difference]: With dead ends: 140 [2021-03-11 14:35:51,487 INFO L226 Difference]: Without dead ends: 121 [2021-03-11 14:35:51,487 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-03-11 14:35:51,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 91. [2021-03-11 14:35:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.5555555555555554) internal successors, (230), 90 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 230 transitions. [2021-03-11 14:35:51,489 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 230 transitions. Word has length 19 [2021-03-11 14:35:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,489 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 230 transitions. [2021-03-11 14:35:51,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 230 transitions. [2021-03-11 14:35:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:51,489 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,489 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable597 [2021-03-11 14:35:51,489 INFO L428 AbstractCegarLoop]: === Iteration 599 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,489 INFO L82 PathProgramCache]: Analyzing trace with hash 698923658, now seen corresponding path program 595 times [2021-03-11 14:35:51,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086933021] [2021-03-11 14:35:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:51,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:51,510 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:51,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:51,521 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:51,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:51,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:51,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:51,558 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:51,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:51,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086933021] [2021-03-11 14:35:51,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:51,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173557721] [2021-03-11 14:35:51,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:51,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:51,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:51,579 INFO L87 Difference]: Start difference. First operand 91 states and 230 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,628 INFO L93 Difference]: Finished difference Result 140 states and 309 transitions. [2021-03-11 14:35:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:51,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,629 INFO L225 Difference]: With dead ends: 140 [2021-03-11 14:35:51,629 INFO L226 Difference]: Without dead ends: 130 [2021-03-11 14:35:51,629 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-03-11 14:35:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 95. [2021-03-11 14:35:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.5531914893617023) internal successors, (240), 94 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 240 transitions. [2021-03-11 14:35:51,631 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 240 transitions. Word has length 19 [2021-03-11 14:35:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,631 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 240 transitions. [2021-03-11 14:35:51,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 240 transitions. [2021-03-11 14:35:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:51,631 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,631 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable598 [2021-03-11 14:35:51,631 INFO L428 AbstractCegarLoop]: === Iteration 600 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1443626156, now seen corresponding path program 596 times [2021-03-11 14:35:51,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102170023] [2021-03-11 14:35:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,642 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:51,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:51,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:51,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:51,661 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:51,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:51,678 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:51,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:51,699 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:51,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102170023] [2021-03-11 14:35:51,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:51,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462509950] [2021-03-11 14:35:51,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:51,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:51,720 INFO L87 Difference]: Start difference. First operand 95 states and 240 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,791 INFO L93 Difference]: Finished difference Result 142 states and 312 transitions. [2021-03-11 14:35:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:51,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,792 INFO L225 Difference]: With dead ends: 142 [2021-03-11 14:35:51,792 INFO L226 Difference]: Without dead ends: 128 [2021-03-11 14:35:51,792 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-03-11 14:35:51,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 93. [2021-03-11 14:35:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.5543478260869565) internal successors, (235), 92 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 235 transitions. [2021-03-11 14:35:51,793 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 235 transitions. Word has length 19 [2021-03-11 14:35:51,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,793 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 235 transitions. [2021-03-11 14:35:51,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,793 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 235 transitions. [2021-03-11 14:35:51,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:51,793 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,793 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable599 [2021-03-11 14:35:51,793 INFO L428 AbstractCegarLoop]: === Iteration 601 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1985102680, now seen corresponding path program 597 times [2021-03-11 14:35:51,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849350922] [2021-03-11 14:35:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,806 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:51,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:51,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:51,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:51,829 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:51,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:51,857 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:51,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:51,879 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:51,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849350922] [2021-03-11 14:35:51,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:51,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011177422] [2021-03-11 14:35:51,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:51,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:51,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:51,900 INFO L87 Difference]: Start difference. First operand 93 states and 235 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,954 INFO L93 Difference]: Finished difference Result 136 states and 299 transitions. [2021-03-11 14:35:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:51,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,954 INFO L225 Difference]: With dead ends: 136 [2021-03-11 14:35:51,954 INFO L226 Difference]: Without dead ends: 126 [2021-03-11 14:35:51,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-03-11 14:35:51,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 95. [2021-03-11 14:35:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.5319148936170213) internal successors, (238), 94 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 238 transitions. [2021-03-11 14:35:51,956 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 238 transitions. Word has length 19 [2021-03-11 14:35:51,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,956 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 238 transitions. [2021-03-11 14:35:51,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,956 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 238 transitions. [2021-03-11 14:35:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:51,956 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,956 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable600 [2021-03-11 14:35:51,956 INFO L428 AbstractCegarLoop]: === Iteration 602 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,956 INFO L82 PathProgramCache]: Analyzing trace with hash -495697684, now seen corresponding path program 598 times [2021-03-11 14:35:51,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147031519] [2021-03-11 14:35:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,966 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:51,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:51,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:51,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:51,986 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:51,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:52,014 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:52,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:52,035 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:52,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147031519] [2021-03-11 14:35:52,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:52,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017705027] [2021-03-11 14:35:52,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:52,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:52,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:52,056 INFO L87 Difference]: Start difference. First operand 95 states and 238 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,125 INFO L93 Difference]: Finished difference Result 130 states and 295 transitions. [2021-03-11 14:35:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:52,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,126 INFO L225 Difference]: With dead ends: 130 [2021-03-11 14:35:52,126 INFO L226 Difference]: Without dead ends: 115 [2021-03-11 14:35:52,126 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-03-11 14:35:52,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 93. [2021-03-11 14:35:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.532608695652174) internal successors, (233), 92 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 233 transitions. [2021-03-11 14:35:52,127 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 233 transitions. Word has length 19 [2021-03-11 14:35:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,127 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 233 transitions. [2021-03-11 14:35:52,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 233 transitions. [2021-03-11 14:35:52,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:52,128 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,128 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable601 [2021-03-11 14:35:52,128 INFO L428 AbstractCegarLoop]: === Iteration 603 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,128 INFO L82 PathProgramCache]: Analyzing trace with hash 370540776, now seen corresponding path program 599 times [2021-03-11 14:35:52,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244612809] [2021-03-11 14:35:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:52,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:52,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:52,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:52,157 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:52,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:52,173 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:52,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:52,194 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:52,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244612809] [2021-03-11 14:35:52,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:52,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453238910] [2021-03-11 14:35:52,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:52,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:52,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:52,215 INFO L87 Difference]: Start difference. First operand 93 states and 233 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,281 INFO L93 Difference]: Finished difference Result 123 states and 280 transitions. [2021-03-11 14:35:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,282 INFO L225 Difference]: With dead ends: 123 [2021-03-11 14:35:52,282 INFO L226 Difference]: Without dead ends: 111 [2021-03-11 14:35:52,282 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-03-11 14:35:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2021-03-11 14:35:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.5104166666666665) internal successors, (241), 96 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 241 transitions. [2021-03-11 14:35:52,283 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 241 transitions. Word has length 19 [2021-03-11 14:35:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,283 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 241 transitions. [2021-03-11 14:35:52,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 241 transitions. [2021-03-11 14:35:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:52,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable602 [2021-03-11 14:35:52,283 INFO L428 AbstractCegarLoop]: === Iteration 604 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1115243274, now seen corresponding path program 600 times [2021-03-11 14:35:52,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057658739] [2021-03-11 14:35:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:35:52,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:35:52,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:52,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:52,314 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:52,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:52,330 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:52,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:52,351 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:52,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057658739] [2021-03-11 14:35:52,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:52,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012039546] [2021-03-11 14:35:52,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:52,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:52,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:52,372 INFO L87 Difference]: Start difference. First operand 97 states and 241 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,437 INFO L93 Difference]: Finished difference Result 110 states and 259 transitions. [2021-03-11 14:35:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:52,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:52,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,437 INFO L225 Difference]: With dead ends: 110 [2021-03-11 14:35:52,437 INFO L226 Difference]: Without dead ends: 88 [2021-03-11 14:35:52,438 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-03-11 14:35:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-03-11 14:35:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.586206896551724) internal successors, (225), 87 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 225 transitions. [2021-03-11 14:35:52,439 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 225 transitions. Word has length 19 [2021-03-11 14:35:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,439 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 225 transitions. [2021-03-11 14:35:52,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,439 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 225 transitions. [2021-03-11 14:35:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:52,439 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,439 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable603 [2021-03-11 14:35:52,439 INFO L428 AbstractCegarLoop]: === Iteration 605 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1155542588, now seen corresponding path program 601 times [2021-03-11 14:35:52,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208260065] [2021-03-11 14:35:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:52,456 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:52,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:52,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:52,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:52,504 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:52,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:52,525 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:52,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208260065] [2021-03-11 14:35:52,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:52,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76296857] [2021-03-11 14:35:52,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:52,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:52,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:52,546 INFO L87 Difference]: Start difference. First operand 88 states and 225 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,612 INFO L93 Difference]: Finished difference Result 155 states and 325 transitions. [2021-03-11 14:35:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:52,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,613 INFO L225 Difference]: With dead ends: 155 [2021-03-11 14:35:52,613 INFO L226 Difference]: Without dead ends: 141 [2021-03-11 14:35:52,613 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-03-11 14:35:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 91. [2021-03-11 14:35:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.566666666666667) internal successors, (231), 90 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 231 transitions. [2021-03-11 14:35:52,614 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 231 transitions. Word has length 19 [2021-03-11 14:35:52,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,614 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 231 transitions. [2021-03-11 14:35:52,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 231 transitions. [2021-03-11 14:35:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:52,615 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,615 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable604 [2021-03-11 14:35:52,615 INFO L428 AbstractCegarLoop]: === Iteration 606 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,615 INFO L82 PathProgramCache]: Analyzing trace with hash 281207262, now seen corresponding path program 602 times [2021-03-11 14:35:52,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359550414] [2021-03-11 14:35:52,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:52,632 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:52,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:52,653 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:52,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:52,685 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:52,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:52,706 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:52,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359550414] [2021-03-11 14:35:52,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:52,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385574577] [2021-03-11 14:35:52,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:52,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:52,727 INFO L87 Difference]: Start difference. First operand 91 states and 231 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,793 INFO L93 Difference]: Finished difference Result 151 states and 314 transitions. [2021-03-11 14:35:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:52,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,793 INFO L225 Difference]: With dead ends: 151 [2021-03-11 14:35:52,793 INFO L226 Difference]: Without dead ends: 139 [2021-03-11 14:35:52,793 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 134.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-03-11 14:35:52,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2021-03-11 14:35:52,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.5795454545454546) internal successors, (227), 88 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 227 transitions. [2021-03-11 14:35:52,795 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 227 transitions. Word has length 19 [2021-03-11 14:35:52,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,795 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 227 transitions. [2021-03-11 14:35:52,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 227 transitions. [2021-03-11 14:35:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:52,795 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,795 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable605 [2021-03-11 14:35:52,795 INFO L428 AbstractCegarLoop]: === Iteration 607 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1978402594, now seen corresponding path program 603 times [2021-03-11 14:35:52,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327704937] [2021-03-11 14:35:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:52,812 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:52,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:52,833 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:52,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:52,858 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:52,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:52,879 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:52,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327704937] [2021-03-11 14:35:52,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:52,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586718978] [2021-03-11 14:35:52,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:52,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:52,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:52,899 INFO L87 Difference]: Start difference. First operand 89 states and 227 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,965 INFO L93 Difference]: Finished difference Result 155 states and 324 transitions. [2021-03-11 14:35:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:52,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,966 INFO L225 Difference]: With dead ends: 155 [2021-03-11 14:35:52,966 INFO L226 Difference]: Without dead ends: 141 [2021-03-11 14:35:52,966 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-03-11 14:35:52,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 91. [2021-03-11 14:35:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.5555555555555554) internal successors, (230), 90 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 230 transitions. [2021-03-11 14:35:52,967 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 230 transitions. Word has length 19 [2021-03-11 14:35:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,967 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 230 transitions. [2021-03-11 14:35:52,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 230 transitions. [2021-03-11 14:35:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:52,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,968 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606 [2021-03-11 14:35:52,968 INFO L428 AbstractCegarLoop]: === Iteration 608 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,968 INFO L82 PathProgramCache]: Analyzing trace with hash -858272764, now seen corresponding path program 604 times [2021-03-11 14:35:52,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780896655] [2021-03-11 14:35:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:52,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:52,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:53,006 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:53,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:53,031 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:53,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:53,052 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:53,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780896655] [2021-03-11 14:35:53,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:53,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660820501] [2021-03-11 14:35:53,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:53,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:53,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:53,073 INFO L87 Difference]: Start difference. First operand 91 states and 230 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,124 INFO L93 Difference]: Finished difference Result 151 states and 313 transitions. [2021-03-11 14:35:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:53,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,125 INFO L225 Difference]: With dead ends: 151 [2021-03-11 14:35:53,125 INFO L226 Difference]: Without dead ends: 139 [2021-03-11 14:35:53,125 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-03-11 14:35:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2021-03-11 14:35:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.5681818181818183) internal successors, (226), 88 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 226 transitions. [2021-03-11 14:35:53,126 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 226 transitions. Word has length 19 [2021-03-11 14:35:53,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,126 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 226 transitions. [2021-03-11 14:35:53,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 226 transitions. [2021-03-11 14:35:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:53,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,127 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607 [2021-03-11 14:35:53,127 INFO L428 AbstractCegarLoop]: === Iteration 609 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash -80774848, now seen corresponding path program 605 times [2021-03-11 14:35:53,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848779822] [2021-03-11 14:35:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,144 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:53,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:53,165 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:53,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:53,181 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:53,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:53,202 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:53,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848779822] [2021-03-11 14:35:53,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:53,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282246700] [2021-03-11 14:35:53,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:53,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:53,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:53,223 INFO L87 Difference]: Start difference. First operand 89 states and 226 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,287 INFO L93 Difference]: Finished difference Result 146 states and 302 transitions. [2021-03-11 14:35:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:53,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:53,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,287 INFO L225 Difference]: With dead ends: 146 [2021-03-11 14:35:53,287 INFO L226 Difference]: Without dead ends: 136 [2021-03-11 14:35:53,287 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-03-11 14:35:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 90. [2021-03-11 14:35:53,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.550561797752809) internal successors, (227), 89 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 227 transitions. [2021-03-11 14:35:53,289 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 227 transitions. Word has length 19 [2021-03-11 14:35:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,289 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 227 transitions. [2021-03-11 14:35:53,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,289 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 227 transitions. [2021-03-11 14:35:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:53,289 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,289 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable608 [2021-03-11 14:35:53,289 INFO L428 AbstractCegarLoop]: === Iteration 610 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,289 INFO L82 PathProgramCache]: Analyzing trace with hash -320417186, now seen corresponding path program 606 times [2021-03-11 14:35:53,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864218112] [2021-03-11 14:35:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:53,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:53,327 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:53,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:53,344 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:53,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:53,366 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:53,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864218112] [2021-03-11 14:35:53,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:53,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816146128] [2021-03-11 14:35:53,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:53,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:53,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:53,386 INFO L87 Difference]: Start difference. First operand 90 states and 227 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,438 INFO L93 Difference]: Finished difference Result 146 states and 301 transitions. [2021-03-11 14:35:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:53,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:53,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,438 INFO L225 Difference]: With dead ends: 146 [2021-03-11 14:35:53,438 INFO L226 Difference]: Without dead ends: 134 [2021-03-11 14:35:53,438 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-03-11 14:35:53,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 88. [2021-03-11 14:35:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.574712643678161) internal successors, (224), 87 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 224 transitions. [2021-03-11 14:35:53,440 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 224 transitions. Word has length 19 [2021-03-11 14:35:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,440 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 224 transitions. [2021-03-11 14:35:53,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 224 transitions. [2021-03-11 14:35:53,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:53,440 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,440 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable609 [2021-03-11 14:35:53,440 INFO L428 AbstractCegarLoop]: === Iteration 611 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,440 INFO L82 PathProgramCache]: Analyzing trace with hash -444895266, now seen corresponding path program 607 times [2021-03-11 14:35:53,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11576875] [2021-03-11 14:35:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:53,468 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:53,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:53,495 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:53,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:53,516 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:53,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11576875] [2021-03-11 14:35:53,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:53,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819378846] [2021-03-11 14:35:53,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:53,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:53,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:53,537 INFO L87 Difference]: Start difference. First operand 88 states and 224 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,601 INFO L93 Difference]: Finished difference Result 161 states and 343 transitions. [2021-03-11 14:35:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:53,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:53,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,602 INFO L225 Difference]: With dead ends: 161 [2021-03-11 14:35:53,602 INFO L226 Difference]: Without dead ends: 147 [2021-03-11 14:35:53,602 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-03-11 14:35:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 92. [2021-03-11 14:35:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5714285714285716) internal successors, (234), 91 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 234 transitions. [2021-03-11 14:35:53,603 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 234 transitions. Word has length 19 [2021-03-11 14:35:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,603 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 234 transitions. [2021-03-11 14:35:53,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 234 transitions. [2021-03-11 14:35:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:53,603 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,603 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable610 [2021-03-11 14:35:53,604 INFO L428 AbstractCegarLoop]: === Iteration 612 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1319230592, now seen corresponding path program 608 times [2021-03-11 14:35:53,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260023194] [2021-03-11 14:35:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:53,632 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:53,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:53,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:53,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:53,680 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:53,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260023194] [2021-03-11 14:35:53,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:53,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022023548] [2021-03-11 14:35:53,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:53,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:53,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:53,701 INFO L87 Difference]: Start difference. First operand 92 states and 234 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,765 INFO L93 Difference]: Finished difference Result 157 states and 332 transitions. [2021-03-11 14:35:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:53,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:53,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,766 INFO L225 Difference]: With dead ends: 157 [2021-03-11 14:35:53,766 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 14:35:53,766 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 14:35:53,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2021-03-11 14:35:53,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.5730337078651684) internal successors, (229), 89 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 229 transitions. [2021-03-11 14:35:53,768 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 229 transitions. Word has length 19 [2021-03-11 14:35:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,768 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 229 transitions. [2021-03-11 14:35:53,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 229 transitions. [2021-03-11 14:35:53,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:53,769 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,769 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable611 [2021-03-11 14:35:53,769 INFO L428 AbstractCegarLoop]: === Iteration 613 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1034006626, now seen corresponding path program 609 times [2021-03-11 14:35:53,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60490382] [2021-03-11 14:35:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:53,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:53,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:53,816 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:53,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:53,837 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:53,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:53,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60490382] [2021-03-11 14:35:53,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:53,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926414725] [2021-03-11 14:35:53,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:53,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:53,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:53,858 INFO L87 Difference]: Start difference. First operand 90 states and 229 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,923 INFO L93 Difference]: Finished difference Result 165 states and 353 transitions. [2021-03-11 14:35:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:53,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,924 INFO L225 Difference]: With dead ends: 165 [2021-03-11 14:35:53,924 INFO L226 Difference]: Without dead ends: 151 [2021-03-11 14:35:53,924 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-03-11 14:35:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 94. [2021-03-11 14:35:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.5483870967741935) internal successors, (237), 93 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 237 transitions. [2021-03-11 14:35:53,925 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 237 transitions. Word has length 19 [2021-03-11 14:35:53,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,925 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 237 transitions. [2021-03-11 14:35:53,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 237 transitions. [2021-03-11 14:35:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:53,925 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,925 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable612 [2021-03-11 14:35:53,926 INFO L428 AbstractCegarLoop]: === Iteration 614 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,926 INFO L82 PathProgramCache]: Analyzing trace with hash 288709482, now seen corresponding path program 610 times [2021-03-11 14:35:53,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75550325] [2021-03-11 14:35:53,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:53,953 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:53,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:53,969 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:53,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:53,992 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:53,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75550325] [2021-03-11 14:35:54,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:54,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719727439] [2021-03-11 14:35:54,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:54,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:54,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:54,013 INFO L87 Difference]: Start difference. First operand 94 states and 237 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,079 INFO L93 Difference]: Finished difference Result 163 states and 345 transitions. [2021-03-11 14:35:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:54,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,080 INFO L225 Difference]: With dead ends: 163 [2021-03-11 14:35:54,080 INFO L226 Difference]: Without dead ends: 147 [2021-03-11 14:35:54,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-03-11 14:35:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 90. [2021-03-11 14:35:54,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.550561797752809) internal successors, (227), 89 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 227 transitions. [2021-03-11 14:35:54,081 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 227 transitions. Word has length 19 [2021-03-11 14:35:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,081 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 227 transitions. [2021-03-11 14:35:54,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 227 transitions. [2021-03-11 14:35:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:54,082 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,082 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable613 [2021-03-11 14:35:54,082 INFO L428 AbstractCegarLoop]: === Iteration 615 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1901188502, now seen corresponding path program 611 times [2021-03-11 14:35:54,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387936015] [2021-03-11 14:35:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:54,110 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:54,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:54,126 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:54,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:54,147 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:54,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387936015] [2021-03-11 14:35:54,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:54,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235450496] [2021-03-11 14:35:54,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:54,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:54,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:54,167 INFO L87 Difference]: Start difference. First operand 90 states and 227 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,226 INFO L93 Difference]: Finished difference Result 155 states and 326 transitions. [2021-03-11 14:35:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,226 INFO L225 Difference]: With dead ends: 155 [2021-03-11 14:35:54,226 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 14:35:54,227 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 14:35:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2021-03-11 14:35:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5274725274725274) internal successors, (230), 91 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 230 transitions. [2021-03-11 14:35:54,228 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 230 transitions. Word has length 19 [2021-03-11 14:35:54,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,228 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 230 transitions. [2021-03-11 14:35:54,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 230 transitions. [2021-03-11 14:35:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:54,228 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,228 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable614 [2021-03-11 14:35:54,228 INFO L428 AbstractCegarLoop]: === Iteration 616 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,228 INFO L82 PathProgramCache]: Analyzing trace with hash -190575194, now seen corresponding path program 612 times [2021-03-11 14:35:54,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304537494] [2021-03-11 14:35:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:54,256 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:54,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:54,272 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:54,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:54,293 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:54,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304537494] [2021-03-11 14:35:54,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:54,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455801869] [2021-03-11 14:35:54,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:54,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:54,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:54,313 INFO L87 Difference]: Start difference. First operand 92 states and 230 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,378 INFO L93 Difference]: Finished difference Result 157 states and 329 transitions. [2021-03-11 14:35:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:54,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,379 INFO L225 Difference]: With dead ends: 157 [2021-03-11 14:35:54,379 INFO L226 Difference]: Without dead ends: 141 [2021-03-11 14:35:54,379 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-03-11 14:35:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 88. [2021-03-11 14:35:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.5632183908045976) internal successors, (223), 87 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 223 transitions. [2021-03-11 14:35:54,380 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 223 transitions. Word has length 19 [2021-03-11 14:35:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,380 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 223 transitions. [2021-03-11 14:35:54,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 223 transitions. [2021-03-11 14:35:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:54,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,381 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable615 [2021-03-11 14:35:54,381 INFO L428 AbstractCegarLoop]: === Iteration 617 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,381 INFO L82 PathProgramCache]: Analyzing trace with hash -884311006, now seen corresponding path program 613 times [2021-03-11 14:35:54,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221156773] [2021-03-11 14:35:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:54,409 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:54,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:54,433 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:54,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:54,454 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:54,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221156773] [2021-03-11 14:35:54,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:54,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234467490] [2021-03-11 14:35:54,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:54,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:54,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:54,474 INFO L87 Difference]: Start difference. First operand 88 states and 223 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,537 INFO L93 Difference]: Finished difference Result 161 states and 342 transitions. [2021-03-11 14:35:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,538 INFO L225 Difference]: With dead ends: 161 [2021-03-11 14:35:54,538 INFO L226 Difference]: Without dead ends: 147 [2021-03-11 14:35:54,538 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-03-11 14:35:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 92. [2021-03-11 14:35:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5604395604395602) internal successors, (233), 91 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 233 transitions. [2021-03-11 14:35:54,539 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 233 transitions. Word has length 19 [2021-03-11 14:35:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,540 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 233 transitions. [2021-03-11 14:35:54,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 233 transitions. [2021-03-11 14:35:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:54,540 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,540 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable616 [2021-03-11 14:35:54,540 INFO L428 AbstractCegarLoop]: === Iteration 618 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,540 INFO L82 PathProgramCache]: Analyzing trace with hash 235818824, now seen corresponding path program 614 times [2021-03-11 14:35:54,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830199034] [2021-03-11 14:35:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:54,568 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:54,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:54,592 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:54,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:54,614 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:54,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830199034] [2021-03-11 14:35:54,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:54,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638507436] [2021-03-11 14:35:54,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:54,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:54,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:54,634 INFO L87 Difference]: Start difference. First operand 92 states and 233 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,682 INFO L93 Difference]: Finished difference Result 157 states and 331 transitions. [2021-03-11 14:35:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:54,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,683 INFO L225 Difference]: With dead ends: 157 [2021-03-11 14:35:54,683 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 14:35:54,683 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 14:35:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2021-03-11 14:35:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.561797752808989) internal successors, (228), 89 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 228 transitions. [2021-03-11 14:35:54,684 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 228 transitions. Word has length 19 [2021-03-11 14:35:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,684 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 228 transitions. [2021-03-11 14:35:54,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 228 transitions. [2021-03-11 14:35:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:54,684 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,684 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable617 [2021-03-11 14:35:54,685 INFO L428 AbstractCegarLoop]: === Iteration 619 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,685 INFO L82 PathProgramCache]: Analyzing trace with hash 726629952, now seen corresponding path program 615 times [2021-03-11 14:35:54,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483930029] [2021-03-11 14:35:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:54,715 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:54,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:54,730 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:54,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:54,751 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:54,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483930029] [2021-03-11 14:35:54,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:54,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415712792] [2021-03-11 14:35:54,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:54,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:54,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:54,771 INFO L87 Difference]: Start difference. First operand 90 states and 228 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,831 INFO L93 Difference]: Finished difference Result 165 states and 352 transitions. [2021-03-11 14:35:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:54,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,832 INFO L225 Difference]: With dead ends: 165 [2021-03-11 14:35:54,832 INFO L226 Difference]: Without dead ends: 151 [2021-03-11 14:35:54,832 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-03-11 14:35:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 94. [2021-03-11 14:35:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.5376344086021505) internal successors, (236), 93 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 236 transitions. [2021-03-11 14:35:54,833 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 236 transitions. Word has length 19 [2021-03-11 14:35:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,833 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 236 transitions. [2021-03-11 14:35:54,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 236 transitions. [2021-03-11 14:35:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:54,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable618 [2021-03-11 14:35:54,833 INFO L428 AbstractCegarLoop]: === Iteration 620 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1920656648, now seen corresponding path program 616 times [2021-03-11 14:35:54,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714151094] [2021-03-11 14:35:54,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:54,861 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:54,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:54,876 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:54,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:54,897 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:54,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714151094] [2021-03-11 14:35:54,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:54,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36772773] [2021-03-11 14:35:54,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:54,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:54,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:54,918 INFO L87 Difference]: Start difference. First operand 94 states and 236 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,983 INFO L93 Difference]: Finished difference Result 163 states and 344 transitions. [2021-03-11 14:35:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,984 INFO L225 Difference]: With dead ends: 163 [2021-03-11 14:35:54,984 INFO L226 Difference]: Without dead ends: 147 [2021-03-11 14:35:54,984 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-03-11 14:35:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 90. [2021-03-11 14:35:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.539325842696629) internal successors, (226), 89 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 226 transitions. [2021-03-11 14:35:54,985 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 226 transitions. Word has length 19 [2021-03-11 14:35:54,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,985 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 226 transitions. [2021-03-11 14:35:54,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,985 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 226 transitions. [2021-03-11 14:35:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:54,985 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,985 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable619 [2021-03-11 14:35:54,985 INFO L428 AbstractCegarLoop]: === Iteration 621 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,986 INFO L82 PathProgramCache]: Analyzing trace with hash -299410978, now seen corresponding path program 617 times [2021-03-11 14:35:54,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633067817] [2021-03-11 14:35:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:55,015 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:55,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:55,031 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:55,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:55,052 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:55,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633067817] [2021-03-11 14:35:55,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:55,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719951291] [2021-03-11 14:35:55,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:55,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:55,073 INFO L87 Difference]: Start difference. First operand 90 states and 226 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,122 INFO L93 Difference]: Finished difference Result 155 states and 325 transitions. [2021-03-11 14:35:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:55,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,122 INFO L225 Difference]: With dead ends: 155 [2021-03-11 14:35:55,122 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 14:35:55,122 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 14:35:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2021-03-11 14:35:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5164835164835164) internal successors, (229), 91 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 229 transitions. [2021-03-11 14:35:55,124 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 229 transitions. Word has length 19 [2021-03-11 14:35:55,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,124 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 229 transitions. [2021-03-11 14:35:55,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,124 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 229 transitions. [2021-03-11 14:35:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:55,124 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,124 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable620 [2021-03-11 14:35:55,124 INFO L428 AbstractCegarLoop]: === Iteration 622 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,124 INFO L82 PathProgramCache]: Analyzing trace with hash 445291520, now seen corresponding path program 618 times [2021-03-11 14:35:55,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818436713] [2021-03-11 14:35:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:55,153 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:55,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:55,169 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:55,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:55,190 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:55,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818436713] [2021-03-11 14:35:55,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:55,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117213898] [2021-03-11 14:35:55,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:55,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:55,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:55,212 INFO L87 Difference]: Start difference. First operand 92 states and 229 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,281 INFO L93 Difference]: Finished difference Result 157 states and 328 transitions. [2021-03-11 14:35:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,282 INFO L225 Difference]: With dead ends: 157 [2021-03-11 14:35:55,282 INFO L226 Difference]: Without dead ends: 141 [2021-03-11 14:35:55,282 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-03-11 14:35:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 88. [2021-03-11 14:35:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.5517241379310347) internal successors, (222), 87 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 222 transitions. [2021-03-11 14:35:55,283 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 222 transitions. Word has length 19 [2021-03-11 14:35:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,283 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 222 transitions. [2021-03-11 14:35:55,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 222 transitions. [2021-03-11 14:35:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:55,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable621 [2021-03-11 14:35:55,283 INFO L428 AbstractCegarLoop]: === Iteration 623 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,284 INFO L82 PathProgramCache]: Analyzing trace with hash 506970474, now seen corresponding path program 619 times [2021-03-11 14:35:55,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062700186] [2021-03-11 14:35:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,301 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:55,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:55,313 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:55,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:55,330 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:55,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:55,351 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:55,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062700186] [2021-03-11 14:35:55,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:55,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292912665] [2021-03-11 14:35:55,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:55,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:55,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:55,372 INFO L87 Difference]: Start difference. First operand 88 states and 222 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,429 INFO L93 Difference]: Finished difference Result 144 states and 297 transitions. [2021-03-11 14:35:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:55,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,430 INFO L225 Difference]: With dead ends: 144 [2021-03-11 14:35:55,430 INFO L226 Difference]: Without dead ends: 134 [2021-03-11 14:35:55,430 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-03-11 14:35:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 90. [2021-03-11 14:35:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.539325842696629) internal successors, (226), 89 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 226 transitions. [2021-03-11 14:35:55,431 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 226 transitions. Word has length 19 [2021-03-11 14:35:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,431 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 226 transitions. [2021-03-11 14:35:55,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 226 transitions. [2021-03-11 14:35:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:55,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable622 [2021-03-11 14:35:55,431 INFO L428 AbstractCegarLoop]: === Iteration 624 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,431 INFO L82 PathProgramCache]: Analyzing trace with hash 267328136, now seen corresponding path program 620 times [2021-03-11 14:35:55,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973551168] [2021-03-11 14:35:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,449 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:55,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:55,461 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:55,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:55,478 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:55,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:55,499 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:55,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973551168] [2021-03-11 14:35:55,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:55,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896119276] [2021-03-11 14:35:55,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:55,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:55,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:55,520 INFO L87 Difference]: Start difference. First operand 90 states and 226 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,563 INFO L93 Difference]: Finished difference Result 144 states and 296 transitions. [2021-03-11 14:35:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:55,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,563 INFO L225 Difference]: With dead ends: 144 [2021-03-11 14:35:55,563 INFO L226 Difference]: Without dead ends: 133 [2021-03-11 14:35:55,564 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-03-11 14:35:55,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 89. [2021-03-11 14:35:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.5454545454545454) internal successors, (224), 88 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 224 transitions. [2021-03-11 14:35:55,565 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 224 transitions. Word has length 19 [2021-03-11 14:35:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,565 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 224 transitions. [2021-03-11 14:35:55,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,565 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 224 transitions. [2021-03-11 14:35:55,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:55,565 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,565 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable623 [2021-03-11 14:35:55,565 INFO L428 AbstractCegarLoop]: === Iteration 625 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2117911432, now seen corresponding path program 621 times [2021-03-11 14:35:55,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378221398] [2021-03-11 14:35:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,582 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:55,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:55,594 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:55,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:55,610 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:55,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:55,631 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:55,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378221398] [2021-03-11 14:35:55,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:55,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580464282] [2021-03-11 14:35:55,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:55,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:55,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:55,652 INFO L87 Difference]: Start difference. First operand 89 states and 224 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,714 INFO L93 Difference]: Finished difference Result 147 states and 304 transitions. [2021-03-11 14:35:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:55,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,715 INFO L225 Difference]: With dead ends: 147 [2021-03-11 14:35:55,715 INFO L226 Difference]: Without dead ends: 137 [2021-03-11 14:35:55,715 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-03-11 14:35:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 91. [2021-03-11 14:35:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.522222222222222) internal successors, (227), 90 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 227 transitions. [2021-03-11 14:35:55,716 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 227 transitions. Word has length 19 [2021-03-11 14:35:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,716 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 227 transitions. [2021-03-11 14:35:55,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 227 transitions. [2021-03-11 14:35:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:55,716 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,716 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable624 [2021-03-11 14:35:55,716 INFO L428 AbstractCegarLoop]: === Iteration 626 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1472881284, now seen corresponding path program 622 times [2021-03-11 14:35:55,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451212961] [2021-03-11 14:35:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,733 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:55,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:55,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:55,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:55,762 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:55,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:55,783 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:55,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451212961] [2021-03-11 14:35:55,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:55,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447112494] [2021-03-11 14:35:55,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:55,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:55,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:55,803 INFO L87 Difference]: Start difference. First operand 91 states and 227 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,867 INFO L93 Difference]: Finished difference Result 149 states and 307 transitions. [2021-03-11 14:35:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:55,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:55,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,867 INFO L225 Difference]: With dead ends: 149 [2021-03-11 14:35:55,867 INFO L226 Difference]: Without dead ends: 135 [2021-03-11 14:35:55,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-03-11 14:35:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 89. [2021-03-11 14:35:55,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.534090909090909) internal successors, (223), 88 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 223 transitions. [2021-03-11 14:35:55,868 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 223 transitions. Word has length 19 [2021-03-11 14:35:55,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,869 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 223 transitions. [2021-03-11 14:35:55,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,869 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 223 transitions. [2021-03-11 14:35:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:55,869 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,869 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable625 [2021-03-11 14:35:55,869 INFO L428 AbstractCegarLoop]: === Iteration 627 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,869 INFO L82 PathProgramCache]: Analyzing trace with hash -805757244, now seen corresponding path program 623 times [2021-03-11 14:35:55,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599004408] [2021-03-11 14:35:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,887 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:55,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:55,899 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:55,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:55,915 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:55,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:55,936 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:55,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599004408] [2021-03-11 14:35:55,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:55,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826480600] [2021-03-11 14:35:55,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:55,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:55,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:55,956 INFO L87 Difference]: Start difference. First operand 89 states and 223 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,999 INFO L93 Difference]: Finished difference Result 147 states and 303 transitions. [2021-03-11 14:35:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,000 INFO L225 Difference]: With dead ends: 147 [2021-03-11 14:35:56,000 INFO L226 Difference]: Without dead ends: 137 [2021-03-11 14:35:56,000 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-03-11 14:35:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 91. [2021-03-11 14:35:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.511111111111111) internal successors, (226), 90 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 226 transitions. [2021-03-11 14:35:56,001 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 226 transitions. Word has length 19 [2021-03-11 14:35:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,001 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 226 transitions. [2021-03-11 14:35:56,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 226 transitions. [2021-03-11 14:35:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:56,001 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,001 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable626 [2021-03-11 14:35:56,002 INFO L428 AbstractCegarLoop]: === Iteration 628 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,002 INFO L82 PathProgramCache]: Analyzing trace with hash -61054746, now seen corresponding path program 624 times [2021-03-11 14:35:56,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432811266] [2021-03-11 14:35:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,019 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:35:56,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:35:56,031 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:56,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:56,047 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:56,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:56,068 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:56,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432811266] [2021-03-11 14:35:56,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:56,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253296953] [2021-03-11 14:35:56,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:56,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:56,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:56,089 INFO L87 Difference]: Start difference. First operand 91 states and 226 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,155 INFO L93 Difference]: Finished difference Result 149 states and 306 transitions. [2021-03-11 14:35:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:56,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:56,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,156 INFO L225 Difference]: With dead ends: 149 [2021-03-11 14:35:56,156 INFO L226 Difference]: Without dead ends: 133 [2021-03-11 14:35:56,156 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-03-11 14:35:56,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 87. [2021-03-11 14:35:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.558139534883721) internal successors, (220), 86 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 220 transitions. [2021-03-11 14:35:56,157 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 220 transitions. Word has length 19 [2021-03-11 14:35:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,157 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 220 transitions. [2021-03-11 14:35:56,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 220 transitions. [2021-03-11 14:35:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:56,157 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,157 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable627 [2021-03-11 14:35:56,157 INFO L428 AbstractCegarLoop]: === Iteration 629 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1213390630, now seen corresponding path program 625 times [2021-03-11 14:35:56,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650494643] [2021-03-11 14:35:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:56,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:56,195 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:56,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:56,223 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:56,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:56,243 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:56,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650494643] [2021-03-11 14:35:56,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:56,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172180307] [2021-03-11 14:35:56,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:56,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:56,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:56,264 INFO L87 Difference]: Start difference. First operand 87 states and 220 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,324 INFO L93 Difference]: Finished difference Result 153 states and 317 transitions. [2021-03-11 14:35:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:56,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:56,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,324 INFO L225 Difference]: With dead ends: 153 [2021-03-11 14:35:56,324 INFO L226 Difference]: Without dead ends: 139 [2021-03-11 14:35:56,324 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-03-11 14:35:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2021-03-11 14:35:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.534090909090909) internal successors, (223), 88 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 223 transitions. [2021-03-11 14:35:56,326 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 223 transitions. Word has length 19 [2021-03-11 14:35:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,326 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 223 transitions. [2021-03-11 14:35:56,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 223 transitions. [2021-03-11 14:35:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:56,326 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,326 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable628 [2021-03-11 14:35:56,326 INFO L428 AbstractCegarLoop]: === Iteration 630 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2087725956, now seen corresponding path program 626 times [2021-03-11 14:35:56,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980644248] [2021-03-11 14:35:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,343 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:56,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:56,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:56,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:56,392 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:56,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:56,413 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:56,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980644248] [2021-03-11 14:35:56,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:56,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362834633] [2021-03-11 14:35:56,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:56,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:56,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:56,434 INFO L87 Difference]: Start difference. First operand 89 states and 223 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,498 INFO L93 Difference]: Finished difference Result 149 states and 306 transitions. [2021-03-11 14:35:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:56,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,499 INFO L225 Difference]: With dead ends: 149 [2021-03-11 14:35:56,499 INFO L226 Difference]: Without dead ends: 137 [2021-03-11 14:35:56,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-03-11 14:35:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 87. [2021-03-11 14:35:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.546511627906977) internal successors, (219), 86 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 219 transitions. [2021-03-11 14:35:56,500 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 219 transitions. Word has length 19 [2021-03-11 14:35:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,500 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 219 transitions. [2021-03-11 14:35:56,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 219 transitions. [2021-03-11 14:35:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:56,501 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,501 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable629 [2021-03-11 14:35:56,501 INFO L428 AbstractCegarLoop]: === Iteration 631 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,501 INFO L82 PathProgramCache]: Analyzing trace with hash -52368516, now seen corresponding path program 627 times [2021-03-11 14:35:56,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888412842] [2021-03-11 14:35:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:56,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:56,541 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:56,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:56,565 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:56,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:56,585 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:56,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888412842] [2021-03-11 14:35:56,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:56,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142993000] [2021-03-11 14:35:56,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:56,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:56,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:56,606 INFO L87 Difference]: Start difference. First operand 87 states and 219 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,668 INFO L93 Difference]: Finished difference Result 153 states and 316 transitions. [2021-03-11 14:35:56,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:56,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,669 INFO L225 Difference]: With dead ends: 153 [2021-03-11 14:35:56,669 INFO L226 Difference]: Without dead ends: 139 [2021-03-11 14:35:56,669 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-03-11 14:35:56,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2021-03-11 14:35:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.522727272727273) internal successors, (222), 88 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 222 transitions. [2021-03-11 14:35:56,670 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 222 transitions. Word has length 19 [2021-03-11 14:35:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,670 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 222 transitions. [2021-03-11 14:35:56,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 222 transitions. [2021-03-11 14:35:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:56,670 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,670 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable630 [2021-03-11 14:35:56,670 INFO L428 AbstractCegarLoop]: === Iteration 632 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1067761314, now seen corresponding path program 628 times [2021-03-11 14:35:56,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589461927] [2021-03-11 14:35:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:56,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:56,708 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:56,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:56,732 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:56,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:56,754 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:56,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589461927] [2021-03-11 14:35:56,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:56,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593061445] [2021-03-11 14:35:56,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:56,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:56,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:56,774 INFO L87 Difference]: Start difference. First operand 89 states and 222 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,824 INFO L93 Difference]: Finished difference Result 149 states and 305 transitions. [2021-03-11 14:35:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:56,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,825 INFO L225 Difference]: With dead ends: 149 [2021-03-11 14:35:56,825 INFO L226 Difference]: Without dead ends: 137 [2021-03-11 14:35:56,825 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-03-11 14:35:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 87. [2021-03-11 14:35:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.5348837209302326) internal successors, (218), 86 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 218 transitions. [2021-03-11 14:35:56,826 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 218 transitions. Word has length 19 [2021-03-11 14:35:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,826 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 218 transitions. [2021-03-11 14:35:56,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 218 transitions. [2021-03-11 14:35:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:56,826 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,826 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable631 [2021-03-11 14:35:56,826 INFO L428 AbstractCegarLoop]: === Iteration 633 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1845259230, now seen corresponding path program 629 times [2021-03-11 14:35:56,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460506972] [2021-03-11 14:35:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,844 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:56,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:56,864 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:56,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:56,881 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:56,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:56,902 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:56,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460506972] [2021-03-11 14:35:56,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:56,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228414847] [2021-03-11 14:35:56,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:56,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:56,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:56,922 INFO L87 Difference]: Start difference. First operand 87 states and 218 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,985 INFO L93 Difference]: Finished difference Result 144 states and 294 transitions. [2021-03-11 14:35:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:56,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,986 INFO L225 Difference]: With dead ends: 144 [2021-03-11 14:35:56,986 INFO L226 Difference]: Without dead ends: 134 [2021-03-11 14:35:56,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-03-11 14:35:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 88. [2021-03-11 14:35:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.5172413793103448) internal successors, (219), 87 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 219 transitions. [2021-03-11 14:35:56,987 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 219 transitions. Word has length 19 [2021-03-11 14:35:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,987 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 219 transitions. [2021-03-11 14:35:56,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 219 transitions. [2021-03-11 14:35:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:56,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,988 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable632 [2021-03-11 14:35:56,988 INFO L428 AbstractCegarLoop]: === Iteration 634 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1605616892, now seen corresponding path program 630 times [2021-03-11 14:35:56,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461872425] [2021-03-11 14:35:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:57,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:57,026 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:57,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:57,042 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:57,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:57,064 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:57,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461872425] [2021-03-11 14:35:57,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:57,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657479306] [2021-03-11 14:35:57,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:57,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:57,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:57,085 INFO L87 Difference]: Start difference. First operand 88 states and 219 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,134 INFO L93 Difference]: Finished difference Result 144 states and 293 transitions. [2021-03-11 14:35:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:57,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,135 INFO L225 Difference]: With dead ends: 144 [2021-03-11 14:35:57,135 INFO L226 Difference]: Without dead ends: 132 [2021-03-11 14:35:57,135 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-03-11 14:35:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 86. [2021-03-11 14:35:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.541176470588235) internal successors, (216), 85 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 216 transitions. [2021-03-11 14:35:57,136 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 216 transitions. Word has length 19 [2021-03-11 14:35:57,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,136 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 216 transitions. [2021-03-11 14:35:57,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 216 transitions. [2021-03-11 14:35:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:57,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,137 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable633 [2021-03-11 14:35:57,137 INFO L428 AbstractCegarLoop]: === Iteration 635 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,137 INFO L82 PathProgramCache]: Analyzing trace with hash -119299042, now seen corresponding path program 631 times [2021-03-11 14:35:57,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342963727] [2021-03-11 14:35:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:57,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:57,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:57,193 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:57,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:57,214 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:57,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342963727] [2021-03-11 14:35:57,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:57,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728434763] [2021-03-11 14:35:57,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:57,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:57,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:57,234 INFO L87 Difference]: Start difference. First operand 86 states and 216 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,299 INFO L93 Difference]: Finished difference Result 159 states and 335 transitions. [2021-03-11 14:35:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:57,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,299 INFO L225 Difference]: With dead ends: 159 [2021-03-11 14:35:57,299 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 14:35:57,299 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 14:35:57,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2021-03-11 14:35:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.539325842696629) internal successors, (226), 89 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 226 transitions. [2021-03-11 14:35:57,301 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 226 transitions. Word has length 19 [2021-03-11 14:35:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,301 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 226 transitions. [2021-03-11 14:35:57,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 226 transitions. [2021-03-11 14:35:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:57,301 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,301 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable634 [2021-03-11 14:35:57,301 INFO L428 AbstractCegarLoop]: === Iteration 636 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,301 INFO L82 PathProgramCache]: Analyzing trace with hash -993634368, now seen corresponding path program 632 times [2021-03-11 14:35:57,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919442460] [2021-03-11 14:35:57,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:57,329 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:57,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:57,357 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:57,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:57,378 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:57,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919442460] [2021-03-11 14:35:57,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:57,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621910169] [2021-03-11 14:35:57,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:57,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:57,399 INFO L87 Difference]: Start difference. First operand 90 states and 226 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,457 INFO L93 Difference]: Finished difference Result 155 states and 324 transitions. [2021-03-11 14:35:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,458 INFO L225 Difference]: With dead ends: 155 [2021-03-11 14:35:57,458 INFO L226 Difference]: Without dead ends: 143 [2021-03-11 14:35:57,458 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-03-11 14:35:57,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 88. [2021-03-11 14:35:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.5402298850574714) internal successors, (221), 87 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 221 transitions. [2021-03-11 14:35:57,459 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 221 transitions. Word has length 19 [2021-03-11 14:35:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,459 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 221 transitions. [2021-03-11 14:35:57,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 221 transitions. [2021-03-11 14:35:57,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:57,459 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,459 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable635 [2021-03-11 14:35:57,459 INFO L428 AbstractCegarLoop]: === Iteration 637 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash -579720990, now seen corresponding path program 633 times [2021-03-11 14:35:57,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998955375] [2021-03-11 14:35:57,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:57,488 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:57,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:57,504 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:57,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:57,525 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:57,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998955375] [2021-03-11 14:35:57,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:57,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424824685] [2021-03-11 14:35:57,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:57,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:57,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:57,546 INFO L87 Difference]: Start difference. First operand 88 states and 221 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,610 INFO L93 Difference]: Finished difference Result 159 states and 338 transitions. [2021-03-11 14:35:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:57,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,611 INFO L225 Difference]: With dead ends: 159 [2021-03-11 14:35:57,611 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 14:35:57,611 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 14:35:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 93. [2021-03-11 14:35:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.510869565217391) internal successors, (231), 92 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 231 transitions. [2021-03-11 14:35:57,612 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 231 transitions. Word has length 19 [2021-03-11 14:35:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,612 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 231 transitions. [2021-03-11 14:35:57,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 231 transitions. [2021-03-11 14:35:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:57,612 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,613 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable636 [2021-03-11 14:35:57,613 INFO L428 AbstractCegarLoop]: === Iteration 638 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,613 INFO L82 PathProgramCache]: Analyzing trace with hash 389163050, now seen corresponding path program 634 times [2021-03-11 14:35:57,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988252081] [2021-03-11 14:35:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:57,640 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:57,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:57,656 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:57,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:57,676 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:57,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988252081] [2021-03-11 14:35:57,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:57,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942076618] [2021-03-11 14:35:57,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:57,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:57,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:57,697 INFO L87 Difference]: Start difference. First operand 93 states and 231 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,762 INFO L93 Difference]: Finished difference Result 149 states and 322 transitions. [2021-03-11 14:35:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:57,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,763 INFO L225 Difference]: With dead ends: 149 [2021-03-11 14:35:57,763 INFO L226 Difference]: Without dead ends: 131 [2021-03-11 14:35:57,763 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-03-11 14:35:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2021-03-11 14:35:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.5172413793103448) internal successors, (219), 87 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 219 transitions. [2021-03-11 14:35:57,764 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 219 transitions. Word has length 19 [2021-03-11 14:35:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,764 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 219 transitions. [2021-03-11 14:35:57,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 219 transitions. [2021-03-11 14:35:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:57,764 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,764 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable637 [2021-03-11 14:35:57,764 INFO L428 AbstractCegarLoop]: === Iteration 639 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,765 INFO L82 PathProgramCache]: Analyzing trace with hash 780051178, now seen corresponding path program 635 times [2021-03-11 14:35:57,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800524972] [2021-03-11 14:35:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:57,804 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:57,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:57,820 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:57,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:57,841 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:57,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800524972] [2021-03-11 14:35:57,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:57,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945593394] [2021-03-11 14:35:57,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:57,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:57,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:57,862 INFO L87 Difference]: Start difference. First operand 88 states and 219 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,925 INFO L93 Difference]: Finished difference Result 152 states and 317 transitions. [2021-03-11 14:35:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:57,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,926 INFO L225 Difference]: With dead ends: 152 [2021-03-11 14:35:57,926 INFO L226 Difference]: Without dead ends: 142 [2021-03-11 14:35:57,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-03-11 14:35:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2021-03-11 14:35:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.49438202247191) internal successors, (222), 89 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 222 transitions. [2021-03-11 14:35:57,927 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 222 transitions. Word has length 19 [2021-03-11 14:35:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,927 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 222 transitions. [2021-03-11 14:35:57,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 222 transitions. [2021-03-11 14:35:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:57,927 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,928 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable638 [2021-03-11 14:35:57,928 INFO L428 AbstractCegarLoop]: === Iteration 640 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,928 INFO L82 PathProgramCache]: Analyzing trace with hash -948996156, now seen corresponding path program 636 times [2021-03-11 14:35:57,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275187925] [2021-03-11 14:35:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:57,958 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:57,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:57,973 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:57,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:57,994 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:57,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275187925] [2021-03-11 14:35:58,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:58,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095560147] [2021-03-11 14:35:58,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:58,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:58,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:58,014 INFO L87 Difference]: Start difference. First operand 90 states and 222 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,083 INFO L93 Difference]: Finished difference Result 146 states and 313 transitions. [2021-03-11 14:35:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:58,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,084 INFO L225 Difference]: With dead ends: 146 [2021-03-11 14:35:58,084 INFO L226 Difference]: Without dead ends: 129 [2021-03-11 14:35:58,084 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-03-11 14:35:58,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 86. [2021-03-11 14:35:58,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.5294117647058822) internal successors, (215), 85 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 215 transitions. [2021-03-11 14:35:58,085 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 215 transitions. Word has length 19 [2021-03-11 14:35:58,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,085 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 215 transitions. [2021-03-11 14:35:58,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,085 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 215 transitions. [2021-03-11 14:35:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:58,085 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,085 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable639 [2021-03-11 14:35:58,085 INFO L428 AbstractCegarLoop]: === Iteration 641 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash -558714782, now seen corresponding path program 637 times [2021-03-11 14:35:58,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404392282] [2021-03-11 14:35:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,121 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:58,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:58,147 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:58,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:58,168 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:58,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404392282] [2021-03-11 14:35:58,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:58,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996177745] [2021-03-11 14:35:58,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:58,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:58,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:58,189 INFO L87 Difference]: Start difference. First operand 86 states and 215 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,250 INFO L93 Difference]: Finished difference Result 159 states and 334 transitions. [2021-03-11 14:35:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:58,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,251 INFO L225 Difference]: With dead ends: 159 [2021-03-11 14:35:58,251 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 14:35:58,251 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 14:35:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2021-03-11 14:35:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.5280898876404496) internal successors, (225), 89 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 225 transitions. [2021-03-11 14:35:58,253 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 225 transitions. Word has length 19 [2021-03-11 14:35:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,253 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 225 transitions. [2021-03-11 14:35:58,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 225 transitions. [2021-03-11 14:35:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:58,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,253 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable640 [2021-03-11 14:35:58,253 INFO L428 AbstractCegarLoop]: === Iteration 642 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,253 INFO L82 PathProgramCache]: Analyzing trace with hash 561415048, now seen corresponding path program 638 times [2021-03-11 14:35:58,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657778811] [2021-03-11 14:35:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,289 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:58,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:58,313 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:58,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:58,334 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:58,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657778811] [2021-03-11 14:35:58,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:58,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521882662] [2021-03-11 14:35:58,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:58,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:58,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:58,354 INFO L87 Difference]: Start difference. First operand 90 states and 225 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,402 INFO L93 Difference]: Finished difference Result 155 states and 323 transitions. [2021-03-11 14:35:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:58,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,402 INFO L225 Difference]: With dead ends: 155 [2021-03-11 14:35:58,403 INFO L226 Difference]: Without dead ends: 143 [2021-03-11 14:35:58,403 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-03-11 14:35:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 88. [2021-03-11 14:35:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.528735632183908) internal successors, (220), 87 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 220 transitions. [2021-03-11 14:35:58,404 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 220 transitions. Word has length 19 [2021-03-11 14:35:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,404 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 220 transitions. [2021-03-11 14:35:58,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 220 transitions. [2021-03-11 14:35:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:58,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,404 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable641 [2021-03-11 14:35:58,404 INFO L428 AbstractCegarLoop]: === Iteration 643 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1631800162, now seen corresponding path program 639 times [2021-03-11 14:35:58,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643956457] [2021-03-11 14:35:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,440 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:58,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:58,456 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:58,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:58,476 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:58,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643956457] [2021-03-11 14:35:58,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:58,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370875486] [2021-03-11 14:35:58,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:58,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:58,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:58,496 INFO L87 Difference]: Start difference. First operand 88 states and 220 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,560 INFO L93 Difference]: Finished difference Result 159 states and 337 transitions. [2021-03-11 14:35:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:58,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,560 INFO L225 Difference]: With dead ends: 159 [2021-03-11 14:35:58,560 INFO L226 Difference]: Without dead ends: 145 [2021-03-11 14:35:58,561 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-03-11 14:35:58,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 93. [2021-03-11 14:35:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.5) internal successors, (230), 92 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 230 transitions. [2021-03-11 14:35:58,562 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 230 transitions. Word has length 19 [2021-03-11 14:35:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,562 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 230 transitions. [2021-03-11 14:35:58,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 230 transitions. [2021-03-11 14:35:58,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:58,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable642 [2021-03-11 14:35:58,562 INFO L428 AbstractCegarLoop]: === Iteration 644 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2021110216, now seen corresponding path program 640 times [2021-03-11 14:35:58,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812043456] [2021-03-11 14:35:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,580 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,598 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:58,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:58,614 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:58,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:58,635 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:58,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812043456] [2021-03-11 14:35:58,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:58,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794577715] [2021-03-11 14:35:58,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:58,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:58,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:58,655 INFO L87 Difference]: Start difference. First operand 93 states and 230 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,718 INFO L93 Difference]: Finished difference Result 149 states and 321 transitions. [2021-03-11 14:35:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:58,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,719 INFO L225 Difference]: With dead ends: 149 [2021-03-11 14:35:58,719 INFO L226 Difference]: Without dead ends: 131 [2021-03-11 14:35:58,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-03-11 14:35:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2021-03-11 14:35:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.5057471264367814) internal successors, (218), 87 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 218 transitions. [2021-03-11 14:35:58,720 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 218 transitions. Word has length 19 [2021-03-11 14:35:58,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,720 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 218 transitions. [2021-03-11 14:35:58,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 218 transitions. [2021-03-11 14:35:58,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:58,721 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,721 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable643 [2021-03-11 14:35:58,721 INFO L428 AbstractCegarLoop]: === Iteration 645 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1637126204, now seen corresponding path program 641 times [2021-03-11 14:35:58,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087666441] [2021-03-11 14:35:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,757 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:58,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:58,783 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:58,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:58,804 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:58,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087666441] [2021-03-11 14:35:58,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:58,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886848134] [2021-03-11 14:35:58,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:58,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:58,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:58,824 INFO L87 Difference]: Start difference. First operand 88 states and 218 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,873 INFO L93 Difference]: Finished difference Result 152 states and 316 transitions. [2021-03-11 14:35:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:58,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,874 INFO L225 Difference]: With dead ends: 152 [2021-03-11 14:35:58,874 INFO L226 Difference]: Without dead ends: 142 [2021-03-11 14:35:58,874 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-03-11 14:35:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2021-03-11 14:35:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.4831460674157304) internal successors, (221), 89 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 221 transitions. [2021-03-11 14:35:58,875 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 221 transitions. Word has length 19 [2021-03-11 14:35:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,875 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 221 transitions. [2021-03-11 14:35:58,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 221 transitions. [2021-03-11 14:35:58,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:58,875 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,875 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable644 [2021-03-11 14:35:58,875 INFO L428 AbstractCegarLoop]: === Iteration 646 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1168436096, now seen corresponding path program 642 times [2021-03-11 14:35:58,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901857259] [2021-03-11 14:35:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,892 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,911 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:58,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:58,936 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:58,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:58,957 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:58,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901857259] [2021-03-11 14:35:58,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:58,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416107216] [2021-03-11 14:35:58,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:58,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:58,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:58,977 INFO L87 Difference]: Start difference. First operand 90 states and 221 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,036 INFO L93 Difference]: Finished difference Result 146 states and 312 transitions. [2021-03-11 14:35:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:59,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,037 INFO L225 Difference]: With dead ends: 146 [2021-03-11 14:35:59,037 INFO L226 Difference]: Without dead ends: 129 [2021-03-11 14:35:59,037 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-03-11 14:35:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 86. [2021-03-11 14:35:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.5176470588235293) internal successors, (214), 85 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 214 transitions. [2021-03-11 14:35:59,038 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 214 transitions. Word has length 19 [2021-03-11 14:35:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,038 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 214 transitions. [2021-03-11 14:35:59,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 214 transitions. [2021-03-11 14:35:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:59,038 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,039 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable645 [2021-03-11 14:35:59,039 INFO L428 AbstractCegarLoop]: === Iteration 647 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,039 INFO L82 PathProgramCache]: Analyzing trace with hash 832566698, now seen corresponding path program 643 times [2021-03-11 14:35:59,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070700129] [2021-03-11 14:35:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,056 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:59,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:59,067 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:59,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:59,087 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:59,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:59,107 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:59,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070700129] [2021-03-11 14:35:59,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:59,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081823666] [2021-03-11 14:35:59,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:59,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:59,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:59,127 INFO L87 Difference]: Start difference. First operand 86 states and 214 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,188 INFO L93 Difference]: Finished difference Result 142 states and 289 transitions. [2021-03-11 14:35:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:59,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,188 INFO L225 Difference]: With dead ends: 142 [2021-03-11 14:35:59,188 INFO L226 Difference]: Without dead ends: 132 [2021-03-11 14:35:59,188 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-03-11 14:35:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 88. [2021-03-11 14:35:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.5057471264367814) internal successors, (218), 87 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 218 transitions. [2021-03-11 14:35:59,190 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 218 transitions. Word has length 19 [2021-03-11 14:35:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,190 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 218 transitions. [2021-03-11 14:35:59,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 218 transitions. [2021-03-11 14:35:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:59,190 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,190 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable646 [2021-03-11 14:35:59,190 INFO L428 AbstractCegarLoop]: === Iteration 648 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,190 INFO L82 PathProgramCache]: Analyzing trace with hash 592924360, now seen corresponding path program 644 times [2021-03-11 14:35:59,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407214702] [2021-03-11 14:35:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:59,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:59,218 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:59,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:59,234 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:59,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:59,255 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:59,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407214702] [2021-03-11 14:35:59,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:59,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595833873] [2021-03-11 14:35:59,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:59,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:59,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:59,275 INFO L87 Difference]: Start difference. First operand 88 states and 218 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,317 INFO L93 Difference]: Finished difference Result 142 states and 288 transitions. [2021-03-11 14:35:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:59,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,317 INFO L225 Difference]: With dead ends: 142 [2021-03-11 14:35:59,317 INFO L226 Difference]: Without dead ends: 131 [2021-03-11 14:35:59,317 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-03-11 14:35:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 87. [2021-03-11 14:35:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.511627906976744) internal successors, (216), 86 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 216 transitions. [2021-03-11 14:35:59,318 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 216 transitions. Word has length 19 [2021-03-11 14:35:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,319 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 216 transitions. [2021-03-11 14:35:59,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 216 transitions. [2021-03-11 14:35:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:59,319 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,319 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647 [2021-03-11 14:35:59,319 INFO L428 AbstractCegarLoop]: === Iteration 649 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,319 INFO L82 PathProgramCache]: Analyzing trace with hash -240518682, now seen corresponding path program 645 times [2021-03-11 14:35:59,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202309980] [2021-03-11 14:35:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,336 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:59,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:59,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:59,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:59,362 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:59,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:59,383 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:59,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202309980] [2021-03-11 14:35:59,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:59,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782158159] [2021-03-11 14:35:59,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:59,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:59,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:59,403 INFO L87 Difference]: Start difference. First operand 87 states and 216 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,456 INFO L93 Difference]: Finished difference Result 144 states and 295 transitions. [2021-03-11 14:35:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,456 INFO L225 Difference]: With dead ends: 144 [2021-03-11 14:35:59,456 INFO L226 Difference]: Without dead ends: 134 [2021-03-11 14:35:59,456 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-03-11 14:35:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 89. [2021-03-11 14:35:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.4886363636363638) internal successors, (219), 88 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 219 transitions. [2021-03-11 14:35:59,458 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 219 transitions. Word has length 19 [2021-03-11 14:35:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,458 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 219 transitions. [2021-03-11 14:35:59,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 219 transitions. [2021-03-11 14:35:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:59,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,458 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648 [2021-03-11 14:35:59,458 INFO L428 AbstractCegarLoop]: === Iteration 650 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,458 INFO L82 PathProgramCache]: Analyzing trace with hash 714460322, now seen corresponding path program 646 times [2021-03-11 14:35:59,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439866832] [2021-03-11 14:35:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:59,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:59,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:59,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:59,502 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:59,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:59,522 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:59,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439866832] [2021-03-11 14:35:59,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:59,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633335609] [2021-03-11 14:35:59,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:59,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:59,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:59,542 INFO L87 Difference]: Start difference. First operand 89 states and 219 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,598 INFO L93 Difference]: Finished difference Result 138 states and 291 transitions. [2021-03-11 14:35:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:59,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,599 INFO L225 Difference]: With dead ends: 138 [2021-03-11 14:35:59,599 INFO L226 Difference]: Without dead ends: 123 [2021-03-11 14:35:59,599 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-03-11 14:35:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 87. [2021-03-11 14:35:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.5) internal successors, (215), 86 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 215 transitions. [2021-03-11 14:35:59,600 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 215 transitions. Word has length 19 [2021-03-11 14:35:59,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,600 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 215 transitions. [2021-03-11 14:35:59,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 215 transitions. [2021-03-11 14:35:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:59,600 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,600 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable649 [2021-03-11 14:35:59,601 INFO L428 AbstractCegarLoop]: === Iteration 651 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1130779938, now seen corresponding path program 647 times [2021-03-11 14:35:59,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029427084] [2021-03-11 14:35:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:59,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:59,631 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:59,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:59,658 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:59,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:59,680 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:59,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029427084] [2021-03-11 14:35:59,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:59,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307951179] [2021-03-11 14:35:59,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:59,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:59,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:59,700 INFO L87 Difference]: Start difference. First operand 87 states and 215 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,738 INFO L93 Difference]: Finished difference Result 144 states and 294 transitions. [2021-03-11 14:35:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:59,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:59,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,739 INFO L225 Difference]: With dead ends: 144 [2021-03-11 14:35:59,739 INFO L226 Difference]: Without dead ends: 134 [2021-03-11 14:35:59,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-03-11 14:35:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 89. [2021-03-11 14:35:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.477272727272727) internal successors, (218), 88 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 218 transitions. [2021-03-11 14:35:59,740 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 218 transitions. Word has length 19 [2021-03-11 14:35:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,740 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 218 transitions. [2021-03-11 14:35:59,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 218 transitions. [2021-03-11 14:35:59,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:59,741 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,741 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable650 [2021-03-11 14:35:59,741 INFO L428 AbstractCegarLoop]: === Iteration 652 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1674782362, now seen corresponding path program 648 times [2021-03-11 14:35:59,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551106895] [2021-03-11 14:35:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,758 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:59,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:59,770 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:59,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:59,795 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:59,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:59,816 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:59,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551106895] [2021-03-11 14:35:59,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:59,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917428650] [2021-03-11 14:35:59,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:59,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:59,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:59,836 INFO L87 Difference]: Start difference. First operand 89 states and 218 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,896 INFO L93 Difference]: Finished difference Result 138 states and 290 transitions. [2021-03-11 14:35:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:35:59,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:35:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,897 INFO L225 Difference]: With dead ends: 138 [2021-03-11 14:35:59,897 INFO L226 Difference]: Without dead ends: 121 [2021-03-11 14:35:59,897 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-03-11 14:35:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2021-03-11 14:35:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.5238095238095237) internal successors, (212), 84 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 212 transitions. [2021-03-11 14:35:59,898 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 212 transitions. Word has length 19 [2021-03-11 14:35:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,898 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 212 transitions. [2021-03-11 14:35:59,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 212 transitions. [2021-03-11 14:35:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:35:59,898 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,898 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable651 [2021-03-11 14:35:59,898 INFO L428 AbstractCegarLoop]: === Iteration 653 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,899 INFO L82 PathProgramCache]: Analyzing trace with hash -887794406, now seen corresponding path program 649 times [2021-03-11 14:35:59,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797278599] [2021-03-11 14:35:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:59,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:59,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:59,954 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:59,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:59,974 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:35:59,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797278599] [2021-03-11 14:35:59,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:35:59,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219261300] [2021-03-11 14:35:59,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:35:59,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:35:59,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:35:59,995 INFO L87 Difference]: Start difference. First operand 85 states and 212 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,050 INFO L93 Difference]: Finished difference Result 154 states and 319 transitions. [2021-03-11 14:36:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:00,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:00,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,050 INFO L225 Difference]: With dead ends: 154 [2021-03-11 14:36:00,050 INFO L226 Difference]: Without dead ends: 140 [2021-03-11 14:36:00,050 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-03-11 14:36:00,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 87. [2021-03-11 14:36:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.5) internal successors, (215), 86 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 215 transitions. [2021-03-11 14:36:00,052 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 215 transitions. Word has length 19 [2021-03-11 14:36:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,052 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 215 transitions. [2021-03-11 14:36:00,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 215 transitions. [2021-03-11 14:36:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:00,052 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,052 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable652 [2021-03-11 14:36:00,052 INFO L428 AbstractCegarLoop]: === Iteration 654 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1762129732, now seen corresponding path program 650 times [2021-03-11 14:36:00,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4827137] [2021-03-11 14:36:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,080 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:00,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:00,107 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:00,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:00,129 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:00,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4827137] [2021-03-11 14:36:00,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:00,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795896570] [2021-03-11 14:36:00,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:00,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:00,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:00,150 INFO L87 Difference]: Start difference. First operand 87 states and 215 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,209 INFO L93 Difference]: Finished difference Result 150 states and 308 transitions. [2021-03-11 14:36:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:00,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:00,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,210 INFO L225 Difference]: With dead ends: 150 [2021-03-11 14:36:00,210 INFO L226 Difference]: Without dead ends: 138 [2021-03-11 14:36:00,210 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-03-11 14:36:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2021-03-11 14:36:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.5) internal successors, (210), 84 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 210 transitions. [2021-03-11 14:36:00,211 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 210 transitions. Word has length 19 [2021-03-11 14:36:00,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,211 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 210 transitions. [2021-03-11 14:36:00,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 210 transitions. [2021-03-11 14:36:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:00,211 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,211 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable653 [2021-03-11 14:36:00,212 INFO L428 AbstractCegarLoop]: === Iteration 655 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash 591107486, now seen corresponding path program 651 times [2021-03-11 14:36:00,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704958521] [2021-03-11 14:36:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:00,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:00,255 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:00,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:00,276 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:00,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704958521] [2021-03-11 14:36:00,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:00,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690748723] [2021-03-11 14:36:00,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:00,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:00,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:00,296 INFO L87 Difference]: Start difference. First operand 85 states and 210 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,353 INFO L93 Difference]: Finished difference Result 158 states and 329 transitions. [2021-03-11 14:36:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:00,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,354 INFO L225 Difference]: With dead ends: 158 [2021-03-11 14:36:00,354 INFO L226 Difference]: Without dead ends: 144 [2021-03-11 14:36:00,354 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-03-11 14:36:00,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 89. [2021-03-11 14:36:00,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.477272727272727) internal successors, (218), 88 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 218 transitions. [2021-03-11 14:36:00,355 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 218 transitions. Word has length 19 [2021-03-11 14:36:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,355 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 218 transitions. [2021-03-11 14:36:00,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 218 transitions. [2021-03-11 14:36:00,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:00,355 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,355 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable654 [2021-03-11 14:36:00,355 INFO L428 AbstractCegarLoop]: === Iteration 656 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,355 INFO L82 PathProgramCache]: Analyzing trace with hash -154189658, now seen corresponding path program 652 times [2021-03-11 14:36:00,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280830692] [2021-03-11 14:36:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:00,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:00,399 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:00,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:00,420 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:00,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280830692] [2021-03-11 14:36:00,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:00,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93681976] [2021-03-11 14:36:00,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:00,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:00,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:00,441 INFO L87 Difference]: Start difference. First operand 89 states and 218 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,498 INFO L93 Difference]: Finished difference Result 156 states and 321 transitions. [2021-03-11 14:36:00,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,498 INFO L225 Difference]: With dead ends: 156 [2021-03-11 14:36:00,498 INFO L226 Difference]: Without dead ends: 140 [2021-03-11 14:36:00,498 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-03-11 14:36:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 85. [2021-03-11 14:36:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.4761904761904763) internal successors, (208), 84 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 208 transitions. [2021-03-11 14:36:00,500 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 208 transitions. Word has length 19 [2021-03-11 14:36:00,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,500 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 208 transitions. [2021-03-11 14:36:00,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 208 transitions. [2021-03-11 14:36:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:00,500 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,500 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable655 [2021-03-11 14:36:00,500 INFO L428 AbstractCegarLoop]: === Iteration 657 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1950879654, now seen corresponding path program 653 times [2021-03-11 14:36:00,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957561653] [2021-03-11 14:36:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,528 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:00,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:00,544 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:00,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:00,565 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:00,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957561653] [2021-03-11 14:36:00,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:00,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774224268] [2021-03-11 14:36:00,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:00,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:00,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:00,586 INFO L87 Difference]: Start difference. First operand 85 states and 208 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,639 INFO L93 Difference]: Finished difference Result 148 states and 302 transitions. [2021-03-11 14:36:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:00,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,639 INFO L225 Difference]: With dead ends: 148 [2021-03-11 14:36:00,639 INFO L226 Difference]: Without dead ends: 138 [2021-03-11 14:36:00,639 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-03-11 14:36:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 87. [2021-03-11 14:36:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.453488372093023) internal successors, (211), 86 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 211 transitions. [2021-03-11 14:36:00,640 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 211 transitions. Word has length 19 [2021-03-11 14:36:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,641 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 211 transitions. [2021-03-11 14:36:00,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 211 transitions. [2021-03-11 14:36:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:00,641 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,641 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable656 [2021-03-11 14:36:00,641 INFO L428 AbstractCegarLoop]: === Iteration 658 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,641 INFO L82 PathProgramCache]: Analyzing trace with hash -633474334, now seen corresponding path program 654 times [2021-03-11 14:36:00,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061460248] [2021-03-11 14:36:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,669 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:00,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:00,685 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:00,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:00,706 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:00,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061460248] [2021-03-11 14:36:00,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:00,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813294212] [2021-03-11 14:36:00,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:00,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:00,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:00,727 INFO L87 Difference]: Start difference. First operand 87 states and 211 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,786 INFO L93 Difference]: Finished difference Result 150 states and 305 transitions. [2021-03-11 14:36:00,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:00,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,787 INFO L225 Difference]: With dead ends: 150 [2021-03-11 14:36:00,787 INFO L226 Difference]: Without dead ends: 134 [2021-03-11 14:36:00,787 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-03-11 14:36:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 83. [2021-03-11 14:36:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.475609756097561) internal successors, (203), 82 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 203 transitions. [2021-03-11 14:36:00,788 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 203 transitions. Word has length 19 [2021-03-11 14:36:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,788 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 203 transitions. [2021-03-11 14:36:00,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 203 transitions. [2021-03-11 14:36:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:00,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,788 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable657 [2021-03-11 14:36:00,788 INFO L428 AbstractCegarLoop]: === Iteration 659 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1806735036, now seen corresponding path program 655 times [2021-03-11 14:36:00,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296857219] [2021-03-11 14:36:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,816 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:00,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:00,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:00,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:00,864 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:00,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296857219] [2021-03-11 14:36:00,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:00,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280378057] [2021-03-11 14:36:00,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:00,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:00,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:00,885 INFO L87 Difference]: Start difference. First operand 83 states and 203 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,942 INFO L93 Difference]: Finished difference Result 152 states and 310 transitions. [2021-03-11 14:36:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:00,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,943 INFO L225 Difference]: With dead ends: 152 [2021-03-11 14:36:00,943 INFO L226 Difference]: Without dead ends: 138 [2021-03-11 14:36:00,943 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-03-11 14:36:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 83. [2021-03-11 14:36:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.451219512195122) internal successors, (201), 82 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 201 transitions. [2021-03-11 14:36:00,944 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 201 transitions. Word has length 19 [2021-03-11 14:36:00,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,944 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 201 transitions. [2021-03-11 14:36:00,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 201 transitions. [2021-03-11 14:36:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:00,945 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,945 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable658 [2021-03-11 14:36:00,945 INFO L428 AbstractCegarLoop]: === Iteration 660 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,945 INFO L82 PathProgramCache]: Analyzing trace with hash 932399710, now seen corresponding path program 656 times [2021-03-11 14:36:00,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131590689] [2021-03-11 14:36:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:00,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:01,001 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:01,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:01,023 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:01,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131590689] [2021-03-11 14:36:01,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:01,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622227283] [2021-03-11 14:36:01,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:01,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:01,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:01,043 INFO L87 Difference]: Start difference. First operand 83 states and 201 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,099 INFO L93 Difference]: Finished difference Result 148 states and 299 transitions. [2021-03-11 14:36:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:01,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,100 INFO L225 Difference]: With dead ends: 148 [2021-03-11 14:36:01,100 INFO L226 Difference]: Without dead ends: 136 [2021-03-11 14:36:01,100 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-03-11 14:36:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 81. [2021-03-11 14:36:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.45) internal successors, (196), 80 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 196 transitions. [2021-03-11 14:36:01,101 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 196 transitions. Word has length 19 [2021-03-11 14:36:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,101 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 196 transitions. [2021-03-11 14:36:01,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 196 transitions. [2021-03-11 14:36:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:01,101 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,101 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable659 [2021-03-11 14:36:01,101 INFO L428 AbstractCegarLoop]: === Iteration 661 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1346313088, now seen corresponding path program 657 times [2021-03-11 14:36:01,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671409587] [2021-03-11 14:36:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:01,145 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:01,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:01,166 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:01,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:01,191 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:01,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671409587] [2021-03-11 14:36:01,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:01,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236502669] [2021-03-11 14:36:01,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:01,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:01,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:01,212 INFO L87 Difference]: Start difference. First operand 81 states and 196 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,267 INFO L93 Difference]: Finished difference Result 152 states and 313 transitions. [2021-03-11 14:36:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,268 INFO L225 Difference]: With dead ends: 152 [2021-03-11 14:36:01,268 INFO L226 Difference]: Without dead ends: 138 [2021-03-11 14:36:01,268 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-03-11 14:36:01,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 86. [2021-03-11 14:36:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.4235294117647057) internal successors, (206), 85 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 206 transitions. [2021-03-11 14:36:01,269 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 206 transitions. Word has length 19 [2021-03-11 14:36:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,269 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 206 transitions. [2021-03-11 14:36:01,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 206 transitions. [2021-03-11 14:36:01,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:01,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,269 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable660 [2021-03-11 14:36:01,269 INFO L428 AbstractCegarLoop]: === Iteration 662 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1979770168, now seen corresponding path program 658 times [2021-03-11 14:36:01,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378855959] [2021-03-11 14:36:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:01,298 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:01,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:01,314 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:01,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:01,334 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:01,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378855959] [2021-03-11 14:36:01,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:01,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621258029] [2021-03-11 14:36:01,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:01,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:01,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:01,355 INFO L87 Difference]: Start difference. First operand 86 states and 206 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,411 INFO L93 Difference]: Finished difference Result 142 states and 297 transitions. [2021-03-11 14:36:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:01,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,411 INFO L225 Difference]: With dead ends: 142 [2021-03-11 14:36:01,411 INFO L226 Difference]: Without dead ends: 124 [2021-03-11 14:36:01,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-03-11 14:36:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 81. [2021-03-11 14:36:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.425) internal successors, (194), 80 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 194 transitions. [2021-03-11 14:36:01,412 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 194 transitions. Word has length 19 [2021-03-11 14:36:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,413 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 194 transitions. [2021-03-11 14:36:01,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 194 transitions. [2021-03-11 14:36:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:01,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,413 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable661 [2021-03-11 14:36:01,413 INFO L428 AbstractCegarLoop]: === Iteration 663 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1588882040, now seen corresponding path program 659 times [2021-03-11 14:36:01,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125882525] [2021-03-11 14:36:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:01,440 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:01,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:01,456 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:01,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:01,476 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:01,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125882525] [2021-03-11 14:36:01,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:01,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720667422] [2021-03-11 14:36:01,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:01,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:01,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:01,497 INFO L87 Difference]: Start difference. First operand 81 states and 194 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,551 INFO L93 Difference]: Finished difference Result 145 states and 292 transitions. [2021-03-11 14:36:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:01,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,552 INFO L225 Difference]: With dead ends: 145 [2021-03-11 14:36:01,552 INFO L226 Difference]: Without dead ends: 135 [2021-03-11 14:36:01,552 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-03-11 14:36:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 83. [2021-03-11 14:36:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.402439024390244) internal successors, (197), 82 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 197 transitions. [2021-03-11 14:36:01,553 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 197 transitions. Word has length 19 [2021-03-11 14:36:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,553 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 197 transitions. [2021-03-11 14:36:01,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 197 transitions. [2021-03-11 14:36:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:01,553 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,553 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable662 [2021-03-11 14:36:01,554 INFO L428 AbstractCegarLoop]: === Iteration 664 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,554 INFO L82 PathProgramCache]: Analyzing trace with hash 977037922, now seen corresponding path program 660 times [2021-03-11 14:36:01,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919203350] [2021-03-11 14:36:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:01,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:01,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:01,598 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:01,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:01,621 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:01,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919203350] [2021-03-11 14:36:01,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:01,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609529194] [2021-03-11 14:36:01,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:01,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:01,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:01,642 INFO L87 Difference]: Start difference. First operand 83 states and 197 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,696 INFO L93 Difference]: Finished difference Result 139 states and 288 transitions. [2021-03-11 14:36:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,697 INFO L225 Difference]: With dead ends: 139 [2021-03-11 14:36:01,697 INFO L226 Difference]: Without dead ends: 122 [2021-03-11 14:36:01,697 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-03-11 14:36:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2021-03-11 14:36:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.423076923076923) internal successors, (189), 78 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 189 transitions. [2021-03-11 14:36:01,698 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 189 transitions. Word has length 19 [2021-03-11 14:36:01,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,698 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 189 transitions. [2021-03-11 14:36:01,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 189 transitions. [2021-03-11 14:36:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:01,699 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,699 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable663 [2021-03-11 14:36:01,699 INFO L428 AbstractCegarLoop]: === Iteration 665 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,699 INFO L82 PathProgramCache]: Analyzing trace with hash -797071014, now seen corresponding path program 661 times [2021-03-11 14:36:01,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322178848] [2021-03-11 14:36:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:01,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:01,727 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:01,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:01,742 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:01,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:01,763 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:01,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322178848] [2021-03-11 14:36:01,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:01,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473864481] [2021-03-11 14:36:01,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:01,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:01,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:01,784 INFO L87 Difference]: Start difference. First operand 79 states and 189 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,839 INFO L93 Difference]: Finished difference Result 156 states and 329 transitions. [2021-03-11 14:36:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:01,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,840 INFO L225 Difference]: With dead ends: 156 [2021-03-11 14:36:01,840 INFO L226 Difference]: Without dead ends: 142 [2021-03-11 14:36:01,840 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-03-11 14:36:01,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 87. [2021-03-11 14:36:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.4767441860465116) internal successors, (213), 86 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 213 transitions. [2021-03-11 14:36:01,841 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 213 transitions. Word has length 19 [2021-03-11 14:36:01,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,842 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 213 transitions. [2021-03-11 14:36:01,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 213 transitions. [2021-03-11 14:36:01,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:01,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable664 [2021-03-11 14:36:01,842 INFO L428 AbstractCegarLoop]: === Iteration 666 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1542368158, now seen corresponding path program 662 times [2021-03-11 14:36:01,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254924659] [2021-03-11 14:36:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,869 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:01,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:01,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:01,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:01,907 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:01,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:01,935 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:01,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254924659] [2021-03-11 14:36:01,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:01,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330579303] [2021-03-11 14:36:01,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:01,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:01,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:01,961 INFO L87 Difference]: Start difference. First operand 87 states and 213 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,031 INFO L93 Difference]: Finished difference Result 154 states and 321 transitions. [2021-03-11 14:36:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:02,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,032 INFO L225 Difference]: With dead ends: 154 [2021-03-11 14:36:02,032 INFO L226 Difference]: Without dead ends: 138 [2021-03-11 14:36:02,032 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-03-11 14:36:02,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 83. [2021-03-11 14:36:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.451219512195122) internal successors, (201), 82 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 201 transitions. [2021-03-11 14:36:02,034 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 201 transitions. Word has length 19 [2021-03-11 14:36:02,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,034 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 201 transitions. [2021-03-11 14:36:02,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 201 transitions. [2021-03-11 14:36:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:02,034 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,034 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable665 [2021-03-11 14:36:02,034 INFO L428 AbstractCegarLoop]: === Iteration 667 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,034 INFO L82 PathProgramCache]: Analyzing trace with hash -52368516, now seen corresponding path program 663 times [2021-03-11 14:36:02,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586034985] [2021-03-11 14:36:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,057 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:02,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:02,072 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:02,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:02,092 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:02,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:02,120 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:02,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586034985] [2021-03-11 14:36:02,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:02,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764636974] [2021-03-11 14:36:02,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:02,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:02,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:02,146 INFO L87 Difference]: Start difference. First operand 83 states and 201 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,216 INFO L93 Difference]: Finished difference Result 147 states and 303 transitions. [2021-03-11 14:36:02,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:02,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,217 INFO L225 Difference]: With dead ends: 147 [2021-03-11 14:36:02,217 INFO L226 Difference]: Without dead ends: 133 [2021-03-11 14:36:02,217 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-03-11 14:36:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 88. [2021-03-11 14:36:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.425287356321839) internal successors, (211), 87 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 211 transitions. [2021-03-11 14:36:02,218 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 211 transitions. Word has length 19 [2021-03-11 14:36:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,219 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 211 transitions. [2021-03-11 14:36:02,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 211 transitions. [2021-03-11 14:36:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:02,219 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,219 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable666 [2021-03-11 14:36:02,219 INFO L428 AbstractCegarLoop]: === Iteration 668 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,219 INFO L82 PathProgramCache]: Analyzing trace with hash 916515524, now seen corresponding path program 664 times [2021-03-11 14:36:02,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207676276] [2021-03-11 14:36:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,236 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:02,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:02,248 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:02,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:02,264 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:02,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:02,285 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:02,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207676276] [2021-03-11 14:36:02,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:02,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586141002] [2021-03-11 14:36:02,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:02,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:02,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:02,305 INFO L87 Difference]: Start difference. First operand 88 states and 211 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,361 INFO L93 Difference]: Finished difference Result 137 states and 287 transitions. [2021-03-11 14:36:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:02,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:02,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,362 INFO L225 Difference]: With dead ends: 137 [2021-03-11 14:36:02,362 INFO L226 Difference]: Without dead ends: 119 [2021-03-11 14:36:02,362 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-03-11 14:36:02,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 83. [2021-03-11 14:36:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.402439024390244) internal successors, (197), 82 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 197 transitions. [2021-03-11 14:36:02,363 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 197 transitions. Word has length 19 [2021-03-11 14:36:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,363 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 197 transitions. [2021-03-11 14:36:02,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 197 transitions. [2021-03-11 14:36:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:02,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,363 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable667 [2021-03-11 14:36:02,363 INFO L428 AbstractCegarLoop]: === Iteration 669 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1571733990, now seen corresponding path program 665 times [2021-03-11 14:36:02,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988788014] [2021-03-11 14:36:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:02,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:02,395 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:02,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:02,412 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:02,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:02,433 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:02,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988788014] [2021-03-11 14:36:02,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:02,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869979664] [2021-03-11 14:36:02,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:02,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:02,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:02,454 INFO L87 Difference]: Start difference. First operand 83 states and 197 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,509 INFO L93 Difference]: Finished difference Result 135 states and 283 transitions. [2021-03-11 14:36:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:02,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:02,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,510 INFO L225 Difference]: With dead ends: 135 [2021-03-11 14:36:02,510 INFO L226 Difference]: Without dead ends: 123 [2021-03-11 14:36:02,510 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-03-11 14:36:02,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 87. [2021-03-11 14:36:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.383720930232558) internal successors, (205), 86 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 205 transitions. [2021-03-11 14:36:02,511 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 205 transitions. Word has length 19 [2021-03-11 14:36:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,511 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 205 transitions. [2021-03-11 14:36:02,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 205 transitions. [2021-03-11 14:36:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:02,511 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,511 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable668 [2021-03-11 14:36:02,511 INFO L428 AbstractCegarLoop]: === Iteration 670 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,512 INFO L82 PathProgramCache]: Analyzing trace with hash -712859460, now seen corresponding path program 666 times [2021-03-11 14:36:02,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149719026] [2021-03-11 14:36:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,528 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:02,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:02,540 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:02,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:02,557 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:02,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:02,578 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:02,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149719026] [2021-03-11 14:36:02,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:02,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310100262] [2021-03-11 14:36:02,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:02,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:02,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:02,599 INFO L87 Difference]: Start difference. First operand 87 states and 205 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,653 INFO L93 Difference]: Finished difference Result 122 states and 262 transitions. [2021-03-11 14:36:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:02,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:02,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,654 INFO L225 Difference]: With dead ends: 122 [2021-03-11 14:36:02,654 INFO L226 Difference]: Without dead ends: 101 [2021-03-11 14:36:02,654 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-03-11 14:36:02,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 79. [2021-03-11 14:36:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.3974358974358974) internal successors, (187), 78 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 187 transitions. [2021-03-11 14:36:02,655 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 187 transitions. Word has length 19 [2021-03-11 14:36:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,655 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 187 transitions. [2021-03-11 14:36:02,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 187 transitions. [2021-03-11 14:36:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:02,656 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,656 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable669 [2021-03-11 14:36:02,656 INFO L428 AbstractCegarLoop]: === Iteration 671 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1100556732, now seen corresponding path program 667 times [2021-03-11 14:36:02,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261375932] [2021-03-11 14:36:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:02,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:02,687 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:02,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:02,703 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:02,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:02,724 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:02,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261375932] [2021-03-11 14:36:02,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:02,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906787125] [2021-03-11 14:36:02,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:02,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:02,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:02,744 INFO L87 Difference]: Start difference. First operand 79 states and 187 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,799 INFO L93 Difference]: Finished difference Result 141 states and 283 transitions. [2021-03-11 14:36:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:02,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,799 INFO L225 Difference]: With dead ends: 141 [2021-03-11 14:36:02,799 INFO L226 Difference]: Without dead ends: 131 [2021-03-11 14:36:02,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-03-11 14:36:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 83. [2021-03-11 14:36:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.402439024390244) internal successors, (197), 82 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 197 transitions. [2021-03-11 14:36:02,801 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 197 transitions. Word has length 19 [2021-03-11 14:36:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,801 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 197 transitions. [2021-03-11 14:36:02,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 197 transitions. [2021-03-11 14:36:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:02,801 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,801 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable670 [2021-03-11 14:36:02,801 INFO L428 AbstractCegarLoop]: === Iteration 672 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1483797256, now seen corresponding path program 668 times [2021-03-11 14:36:02,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018419564] [2021-03-11 14:36:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:02,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:02,831 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:02,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:02,847 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:02,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:02,869 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:02,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018419564] [2021-03-11 14:36:02,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:02,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86754505] [2021-03-11 14:36:02,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:02,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:02,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:02,890 INFO L87 Difference]: Start difference. First operand 83 states and 197 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,943 INFO L93 Difference]: Finished difference Result 143 states and 286 transitions. [2021-03-11 14:36:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,944 INFO L225 Difference]: With dead ends: 143 [2021-03-11 14:36:02,944 INFO L226 Difference]: Without dead ends: 129 [2021-03-11 14:36:02,944 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-03-11 14:36:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 81. [2021-03-11 14:36:02,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.4) internal successors, (192), 80 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 192 transitions. [2021-03-11 14:36:02,945 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 192 transitions. Word has length 19 [2021-03-11 14:36:02,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,945 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 192 transitions. [2021-03-11 14:36:02,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 192 transitions. [2021-03-11 14:36:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:02,946 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,946 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable671 [2021-03-11 14:36:02,946 INFO L428 AbstractCegarLoop]: === Iteration 673 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1845259230, now seen corresponding path program 669 times [2021-03-11 14:36:02,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332817352] [2021-03-11 14:36:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,963 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:02,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:02,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:02,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:02,994 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:02,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:03,015 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:03,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332817352] [2021-03-11 14:36:03,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:03,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329406987] [2021-03-11 14:36:03,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:03,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:03,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:03,036 INFO L87 Difference]: Start difference. First operand 81 states and 192 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,089 INFO L93 Difference]: Finished difference Result 138 states and 275 transitions. [2021-03-11 14:36:03,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:03,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,090 INFO L225 Difference]: With dead ends: 138 [2021-03-11 14:36:03,090 INFO L226 Difference]: Without dead ends: 128 [2021-03-11 14:36:03,090 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-03-11 14:36:03,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 83. [2021-03-11 14:36:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.3780487804878048) internal successors, (195), 82 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 195 transitions. [2021-03-11 14:36:03,091 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 195 transitions. Word has length 19 [2021-03-11 14:36:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,092 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 195 transitions. [2021-03-11 14:36:03,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 195 transitions. [2021-03-11 14:36:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:03,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable672 [2021-03-11 14:36:03,092 INFO L428 AbstractCegarLoop]: === Iteration 674 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,092 INFO L82 PathProgramCache]: Analyzing trace with hash 116211896, now seen corresponding path program 670 times [2021-03-11 14:36:03,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376313985] [2021-03-11 14:36:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,118 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:03,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:03,131 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:03,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:03,146 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:03,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:03,167 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:03,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376313985] [2021-03-11 14:36:03,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:03,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951784015] [2021-03-11 14:36:03,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:03,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:03,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:03,188 INFO L87 Difference]: Start difference. First operand 83 states and 195 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,246 INFO L93 Difference]: Finished difference Result 132 states and 271 transitions. [2021-03-11 14:36:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:03,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,247 INFO L225 Difference]: With dead ends: 132 [2021-03-11 14:36:03,247 INFO L226 Difference]: Without dead ends: 117 [2021-03-11 14:36:03,247 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-03-11 14:36:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2021-03-11 14:36:03,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.375) internal successors, (190), 80 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 190 transitions. [2021-03-11 14:36:03,248 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 190 transitions. Word has length 19 [2021-03-11 14:36:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,248 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 190 transitions. [2021-03-11 14:36:03,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 190 transitions. [2021-03-11 14:36:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:03,248 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,249 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable673 [2021-03-11 14:36:03,249 INFO L428 AbstractCegarLoop]: === Iteration 675 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash 750310238, now seen corresponding path program 671 times [2021-03-11 14:36:03,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118481321] [2021-03-11 14:36:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,269 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:03,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:03,282 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:03,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:03,298 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:03,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:03,319 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:03,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118481321] [2021-03-11 14:36:03,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:03,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236064286] [2021-03-11 14:36:03,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:03,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:03,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:03,339 INFO L87 Difference]: Start difference. First operand 81 states and 190 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,395 INFO L93 Difference]: Finished difference Result 133 states and 276 transitions. [2021-03-11 14:36:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,396 INFO L225 Difference]: With dead ends: 133 [2021-03-11 14:36:03,396 INFO L226 Difference]: Without dead ends: 121 [2021-03-11 14:36:03,396 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-03-11 14:36:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2021-03-11 14:36:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.357142857142857) internal successors, (198), 84 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 198 transitions. [2021-03-11 14:36:03,397 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 198 transitions. Word has length 19 [2021-03-11 14:36:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,397 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 198 transitions. [2021-03-11 14:36:03,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 198 transitions. [2021-03-11 14:36:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:03,398 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,398 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable674 [2021-03-11 14:36:03,398 INFO L428 AbstractCegarLoop]: === Iteration 676 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1605616892, now seen corresponding path program 672 times [2021-03-11 14:36:03,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757162648] [2021-03-11 14:36:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,415 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:03,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:03,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:03,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:03,443 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:03,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:03,464 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:03,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757162648] [2021-03-11 14:36:03,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:03,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865709203] [2021-03-11 14:36:03,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:03,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:03,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:03,484 INFO L87 Difference]: Start difference. First operand 85 states and 198 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,537 INFO L93 Difference]: Finished difference Result 120 states and 255 transitions. [2021-03-11 14:36:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:03,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:03,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,538 INFO L225 Difference]: With dead ends: 120 [2021-03-11 14:36:03,538 INFO L226 Difference]: Without dead ends: 99 [2021-03-11 14:36:03,538 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-03-11 14:36:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 77. [2021-03-11 14:36:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.4078947368421053) internal successors, (183), 76 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 183 transitions. [2021-03-11 14:36:03,539 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 183 transitions. Word has length 19 [2021-03-11 14:36:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,539 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 183 transitions. [2021-03-11 14:36:03,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 183 transitions. [2021-03-11 14:36:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:03,539 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,539 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable675 [2021-03-11 14:36:03,540 INFO L428 AbstractCegarLoop]: === Iteration 677 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,540 INFO L82 PathProgramCache]: Analyzing trace with hash 598823932, now seen corresponding path program 673 times [2021-03-11 14:36:03,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083097112] [2021-03-11 14:36:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:03,568 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:03,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:03,592 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:03,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:03,613 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:03,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083097112] [2021-03-11 14:36:03,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:03,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132311978] [2021-03-11 14:36:03,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:03,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:03,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:03,634 INFO L87 Difference]: Start difference. First operand 77 states and 183 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,688 INFO L93 Difference]: Finished difference Result 136 states and 266 transitions. [2021-03-11 14:36:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:03,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:03,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,689 INFO L225 Difference]: With dead ends: 136 [2021-03-11 14:36:03,689 INFO L226 Difference]: Without dead ends: 122 [2021-03-11 14:36:03,689 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-03-11 14:36:03,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2021-03-11 14:36:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.3846153846153846) internal successors, (186), 78 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 186 transitions. [2021-03-11 14:36:03,690 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 186 transitions. Word has length 19 [2021-03-11 14:36:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,690 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 186 transitions. [2021-03-11 14:36:03,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 186 transitions. [2021-03-11 14:36:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:03,690 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,691 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable676 [2021-03-11 14:36:03,691 INFO L428 AbstractCegarLoop]: === Iteration 678 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1718953762, now seen corresponding path program 674 times [2021-03-11 14:36:03,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633469524] [2021-03-11 14:36:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:03,719 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:03,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:03,744 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:03,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:03,766 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:03,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633469524] [2021-03-11 14:36:03,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:03,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601976653] [2021-03-11 14:36:03,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:03,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:03,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:03,787 INFO L87 Difference]: Start difference. First operand 79 states and 186 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,826 INFO L93 Difference]: Finished difference Result 132 states and 255 transitions. [2021-03-11 14:36:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:03,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,827 INFO L225 Difference]: With dead ends: 132 [2021-03-11 14:36:03,827 INFO L226 Difference]: Without dead ends: 120 [2021-03-11 14:36:03,827 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-03-11 14:36:03,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 77. [2021-03-11 14:36:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.3815789473684212) internal successors, (181), 76 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 181 transitions. [2021-03-11 14:36:03,828 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 181 transitions. Word has length 19 [2021-03-11 14:36:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,828 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 181 transitions. [2021-03-11 14:36:03,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 181 transitions. [2021-03-11 14:36:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:03,828 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,828 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable677 [2021-03-11 14:36:03,829 INFO L428 AbstractCegarLoop]: === Iteration 679 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2085202406, now seen corresponding path program 675 times [2021-03-11 14:36:03,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445905212] [2021-03-11 14:36:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:03,857 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:03,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:03,873 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:03,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:03,895 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:03,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445905212] [2021-03-11 14:36:03,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:03,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591690280] [2021-03-11 14:36:03,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:03,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:03,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:03,916 INFO L87 Difference]: Start difference. First operand 77 states and 181 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,969 INFO L93 Difference]: Finished difference Result 140 states and 276 transitions. [2021-03-11 14:36:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:03,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,970 INFO L225 Difference]: With dead ends: 140 [2021-03-11 14:36:03,970 INFO L226 Difference]: Without dead ends: 126 [2021-03-11 14:36:03,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-03-11 14:36:03,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 81. [2021-03-11 14:36:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.3625) internal successors, (189), 80 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 189 transitions. [2021-03-11 14:36:03,971 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 189 transitions. Word has length 19 [2021-03-11 14:36:03,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,971 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 189 transitions. [2021-03-11 14:36:03,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 189 transitions. [2021-03-11 14:36:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:03,972 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,972 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable678 [2021-03-11 14:36:03,972 INFO L428 AbstractCegarLoop]: === Iteration 680 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,972 INFO L82 PathProgramCache]: Analyzing trace with hash -891175710, now seen corresponding path program 676 times [2021-03-11 14:36:03,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509991036] [2021-03-11 14:36:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:04,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:04,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:04,016 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:04,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:04,038 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:04,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509991036] [2021-03-11 14:36:04,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:04,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80202964] [2021-03-11 14:36:04,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:04,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:04,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:04,059 INFO L87 Difference]: Start difference. First operand 81 states and 189 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,115 INFO L93 Difference]: Finished difference Result 138 states and 268 transitions. [2021-03-11 14:36:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:04,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,115 INFO L225 Difference]: With dead ends: 138 [2021-03-11 14:36:04,115 INFO L226 Difference]: Without dead ends: 122 [2021-03-11 14:36:04,115 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-03-11 14:36:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2021-03-11 14:36:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.3552631578947367) internal successors, (179), 76 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 179 transitions. [2021-03-11 14:36:04,116 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 179 transitions. Word has length 19 [2021-03-11 14:36:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,117 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 179 transitions. [2021-03-11 14:36:04,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 179 transitions. [2021-03-11 14:36:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:04,117 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,117 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable679 [2021-03-11 14:36:04,117 INFO L428 AbstractCegarLoop]: === Iteration 681 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1183723960, now seen corresponding path program 677 times [2021-03-11 14:36:04,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513061859] [2021-03-11 14:36:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:04,146 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:04,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:04,163 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:04,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:04,185 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:04,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513061859] [2021-03-11 14:36:04,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:04,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856741909] [2021-03-11 14:36:04,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:04,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:04,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:04,206 INFO L87 Difference]: Start difference. First operand 77 states and 179 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,243 INFO L93 Difference]: Finished difference Result 130 states and 249 transitions. [2021-03-11 14:36:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,244 INFO L225 Difference]: With dead ends: 130 [2021-03-11 14:36:04,244 INFO L226 Difference]: Without dead ends: 120 [2021-03-11 14:36:04,244 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-03-11 14:36:04,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 79. [2021-03-11 14:36:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.3333333333333335) internal successors, (182), 78 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 182 transitions. [2021-03-11 14:36:04,245 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 182 transitions. Word has length 19 [2021-03-11 14:36:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,245 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 182 transitions. [2021-03-11 14:36:04,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 182 transitions. [2021-03-11 14:36:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:04,245 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,245 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable680 [2021-03-11 14:36:04,245 INFO L428 AbstractCegarLoop]: === Iteration 682 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1928426458, now seen corresponding path program 678 times [2021-03-11 14:36:04,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318888979] [2021-03-11 14:36:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:04,276 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:04,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:04,293 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:04,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:04,314 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:04,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318888979] [2021-03-11 14:36:04,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:04,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4098466] [2021-03-11 14:36:04,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:04,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:04,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:04,335 INFO L87 Difference]: Start difference. First operand 79 states and 182 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,389 INFO L93 Difference]: Finished difference Result 132 states and 252 transitions. [2021-03-11 14:36:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:04,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,390 INFO L225 Difference]: With dead ends: 132 [2021-03-11 14:36:04,390 INFO L226 Difference]: Without dead ends: 116 [2021-03-11 14:36:04,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-03-11 14:36:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2021-03-11 14:36:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.3513513513513513) internal successors, (174), 74 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 174 transitions. [2021-03-11 14:36:04,391 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 174 transitions. Word has length 19 [2021-03-11 14:36:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,391 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 174 transitions. [2021-03-11 14:36:04,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 174 transitions. [2021-03-11 14:36:04,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:04,391 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,391 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable681 [2021-03-11 14:36:04,391 INFO L428 AbstractCegarLoop]: === Iteration 683 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1001613922, now seen corresponding path program 679 times [2021-03-11 14:36:04,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699752140] [2021-03-11 14:36:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,409 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:04,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:04,430 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:04,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:04,454 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:04,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:04,476 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:04,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699752140] [2021-03-11 14:36:04,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:04,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133552766] [2021-03-11 14:36:04,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:04,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:04,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:04,497 INFO L87 Difference]: Start difference. First operand 75 states and 174 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,553 INFO L93 Difference]: Finished difference Result 133 states and 254 transitions. [2021-03-11 14:36:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,554 INFO L225 Difference]: With dead ends: 133 [2021-03-11 14:36:04,554 INFO L226 Difference]: Without dead ends: 119 [2021-03-11 14:36:04,554 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-03-11 14:36:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 75. [2021-03-11 14:36:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.324324324324324) internal successors, (172), 74 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 172 transitions. [2021-03-11 14:36:04,555 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 172 transitions. Word has length 19 [2021-03-11 14:36:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,555 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 172 transitions. [2021-03-11 14:36:04,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 172 transitions. [2021-03-11 14:36:04,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:04,555 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,555 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable682 [2021-03-11 14:36:04,555 INFO L428 AbstractCegarLoop]: === Iteration 684 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,555 INFO L82 PathProgramCache]: Analyzing trace with hash 118515908, now seen corresponding path program 680 times [2021-03-11 14:36:04,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382085362] [2021-03-11 14:36:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:04,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:04,594 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:04,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:04,618 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:04,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:04,640 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:04,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382085362] [2021-03-11 14:36:04,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:04,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391314156] [2021-03-11 14:36:04,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:04,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:04,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:04,661 INFO L87 Difference]: Start difference. First operand 75 states and 172 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,700 INFO L93 Difference]: Finished difference Result 129 states and 243 transitions. [2021-03-11 14:36:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:04,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,701 INFO L225 Difference]: With dead ends: 129 [2021-03-11 14:36:04,701 INFO L226 Difference]: Without dead ends: 117 [2021-03-11 14:36:04,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-03-11 14:36:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 73. [2021-03-11 14:36:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.3194444444444446) internal successors, (167), 72 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 167 transitions. [2021-03-11 14:36:04,702 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 167 transitions. Word has length 19 [2021-03-11 14:36:04,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,702 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 167 transitions. [2021-03-11 14:36:04,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 167 transitions. [2021-03-11 14:36:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:04,702 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,702 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable683 [2021-03-11 14:36:04,703 INFO L428 AbstractCegarLoop]: === Iteration 685 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2074699302, now seen corresponding path program 681 times [2021-03-11 14:36:04,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428272560] [2021-03-11 14:36:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,720 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:04,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:04,741 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:04,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:04,758 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:04,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:04,779 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:04,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428272560] [2021-03-11 14:36:04,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:04,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658241447] [2021-03-11 14:36:04,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:04,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:04,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:04,800 INFO L87 Difference]: Start difference. First operand 73 states and 167 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,855 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2021-03-11 14:36:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:04,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:04,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,856 INFO L225 Difference]: With dead ends: 133 [2021-03-11 14:36:04,856 INFO L226 Difference]: Without dead ends: 119 [2021-03-11 14:36:04,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-03-11 14:36:04,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2021-03-11 14:36:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.2987012987012987) internal successors, (177), 77 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 177 transitions. [2021-03-11 14:36:04,857 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 177 transitions. Word has length 19 [2021-03-11 14:36:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,857 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 177 transitions. [2021-03-11 14:36:04,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 177 transitions. [2021-03-11 14:36:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:04,857 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,857 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable684 [2021-03-11 14:36:04,858 INFO L428 AbstractCegarLoop]: === Iteration 686 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1578211076, now seen corresponding path program 682 times [2021-03-11 14:36:04,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985691750] [2021-03-11 14:36:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,875 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:04,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:04,896 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:04,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:04,912 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:04,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:04,934 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:04,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985691750] [2021-03-11 14:36:04,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:04,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441387694] [2021-03-11 14:36:04,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:04,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:04,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:04,955 INFO L87 Difference]: Start difference. First operand 78 states and 177 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,010 INFO L93 Difference]: Finished difference Result 123 states and 241 transitions. [2021-03-11 14:36:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:05,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:05,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,011 INFO L225 Difference]: With dead ends: 123 [2021-03-11 14:36:05,011 INFO L226 Difference]: Without dead ends: 105 [2021-03-11 14:36:05,011 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-03-11 14:36:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2021-03-11 14:36:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.2916666666666665) internal successors, (165), 72 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 165 transitions. [2021-03-11 14:36:05,012 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 165 transitions. Word has length 19 [2021-03-11 14:36:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,012 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 165 transitions. [2021-03-11 14:36:05,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 165 transitions. [2021-03-11 14:36:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:05,013 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,013 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable685 [2021-03-11 14:36:05,013 INFO L428 AbstractCegarLoop]: === Iteration 687 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1194227064, now seen corresponding path program 683 times [2021-03-11 14:36:05,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195925097] [2021-03-11 14:36:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,032 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:05,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:05,054 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:05,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:05,083 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:05,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:05,104 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:05,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195925097] [2021-03-11 14:36:05,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:05,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355001611] [2021-03-11 14:36:05,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:05,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:05,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:05,124 INFO L87 Difference]: Start difference. First operand 73 states and 165 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,162 INFO L93 Difference]: Finished difference Result 126 states and 236 transitions. [2021-03-11 14:36:05,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:05,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:05,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,163 INFO L225 Difference]: With dead ends: 126 [2021-03-11 14:36:05,163 INFO L226 Difference]: Without dead ends: 116 [2021-03-11 14:36:05,163 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-03-11 14:36:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2021-03-11 14:36:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.27027027027027) internal successors, (168), 74 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 168 transitions. [2021-03-11 14:36:05,164 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 168 transitions. Word has length 19 [2021-03-11 14:36:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,164 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 168 transitions. [2021-03-11 14:36:05,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 168 transitions. [2021-03-11 14:36:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:05,164 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,164 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable686 [2021-03-11 14:36:05,164 INFO L428 AbstractCegarLoop]: === Iteration 688 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1611335236, now seen corresponding path program 684 times [2021-03-11 14:36:05,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806904012] [2021-03-11 14:36:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,182 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:05,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:05,203 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:05,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:05,232 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:05,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:05,254 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:05,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806904012] [2021-03-11 14:36:05,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:05,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512975799] [2021-03-11 14:36:05,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:05,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:05,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:05,276 INFO L87 Difference]: Start difference. First operand 75 states and 168 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,330 INFO L93 Difference]: Finished difference Result 120 states and 232 transitions. [2021-03-11 14:36:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:05,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:05,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,331 INFO L225 Difference]: With dead ends: 120 [2021-03-11 14:36:05,331 INFO L226 Difference]: Without dead ends: 103 [2021-03-11 14:36:05,331 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-03-11 14:36:05,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2021-03-11 14:36:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.2857142857142856) internal successors, (160), 70 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 160 transitions. [2021-03-11 14:36:05,332 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 160 transitions. Word has length 19 [2021-03-11 14:36:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,332 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 160 transitions. [2021-03-11 14:36:05,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 160 transitions. [2021-03-11 14:36:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:05,332 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,332 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable687 [2021-03-11 14:36:05,332 INFO L428 AbstractCegarLoop]: === Iteration 689 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,332 INFO L82 PathProgramCache]: Analyzing trace with hash -991110818, now seen corresponding path program 685 times [2021-03-11 14:36:05,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902633592] [2021-03-11 14:36:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,349 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:05,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:05,361 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:05,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:05,376 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:05,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:05,397 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:05,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902633592] [2021-03-11 14:36:05,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:05,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291332523] [2021-03-11 14:36:05,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:05,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:05,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:05,418 INFO L87 Difference]: Start difference. First operand 71 states and 160 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,472 INFO L93 Difference]: Finished difference Result 129 states and 245 transitions. [2021-03-11 14:36:05,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:05,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,473 INFO L225 Difference]: With dead ends: 129 [2021-03-11 14:36:05,473 INFO L226 Difference]: Without dead ends: 115 [2021-03-11 14:36:05,473 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-03-11 14:36:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 71. [2021-03-11 14:36:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.2285714285714286) internal successors, (156), 70 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 156 transitions. [2021-03-11 14:36:05,474 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 156 transitions. Word has length 19 [2021-03-11 14:36:05,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,474 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 156 transitions. [2021-03-11 14:36:05,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,474 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 156 transitions. [2021-03-11 14:36:05,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:05,474 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,474 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable688 [2021-03-11 14:36:05,474 INFO L428 AbstractCegarLoop]: === Iteration 690 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,474 INFO L82 PathProgramCache]: Analyzing trace with hash 202915878, now seen corresponding path program 686 times [2021-03-11 14:36:05,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596134724] [2021-03-11 14:36:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,491 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:05,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:05,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:05,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:05,518 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:05,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:05,539 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:05,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596134724] [2021-03-11 14:36:05,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:05,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069989415] [2021-03-11 14:36:05,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:05,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:05,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:05,563 INFO L87 Difference]: Start difference. First operand 71 states and 156 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,616 INFO L93 Difference]: Finished difference Result 127 states and 237 transitions. [2021-03-11 14:36:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:05,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,617 INFO L225 Difference]: With dead ends: 127 [2021-03-11 14:36:05,617 INFO L226 Difference]: Without dead ends: 111 [2021-03-11 14:36:05,617 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-03-11 14:36:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 67. [2021-03-11 14:36:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 144 transitions. [2021-03-11 14:36:05,618 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 144 transitions. Word has length 19 [2021-03-11 14:36:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,618 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 144 transitions. [2021-03-11 14:36:05,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 144 transitions. [2021-03-11 14:36:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:05,618 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,618 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable689 [2021-03-11 14:36:05,619 INFO L428 AbstractCegarLoop]: === Iteration 691 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 619830140, now seen corresponding path program 687 times [2021-03-11 14:36:05,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776639822] [2021-03-11 14:36:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:05,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:05,647 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:05,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:05,663 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:05,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:05,684 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:05,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776639822] [2021-03-11 14:36:05,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:05,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066276714] [2021-03-11 14:36:05,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:05,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:05,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:05,705 INFO L87 Difference]: Start difference. First operand 67 states and 144 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,759 INFO L93 Difference]: Finished difference Result 120 states and 219 transitions. [2021-03-11 14:36:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:05,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:05,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,760 INFO L225 Difference]: With dead ends: 120 [2021-03-11 14:36:05,760 INFO L226 Difference]: Without dead ends: 106 [2021-03-11 14:36:05,760 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-03-11 14:36:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 61. [2021-03-11 14:36:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 60 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 127 transitions. [2021-03-11 14:36:05,760 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 127 transitions. Word has length 19 [2021-03-11 14:36:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,761 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 127 transitions. [2021-03-11 14:36:05,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 127 transitions. [2021-03-11 14:36:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:05,761 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,761 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable690 [2021-03-11 14:36:05,761 INFO L428 AbstractCegarLoop]: === Iteration 692 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,761 INFO L82 PathProgramCache]: Analyzing trace with hash -22226778, now seen corresponding path program 688 times [2021-03-11 14:36:05,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519001810] [2021-03-11 14:36:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:05,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:05,790 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:05,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:05,806 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:05,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:05,826 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:05,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519001810] [2021-03-11 14:36:05,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:05,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61046641] [2021-03-11 14:36:05,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:05,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:05,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:05,847 INFO L87 Difference]: Start difference. First operand 61 states and 127 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,902 INFO L93 Difference]: Finished difference Result 110 states and 203 transitions. [2021-03-11 14:36:05,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:05,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:05,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,902 INFO L225 Difference]: With dead ends: 110 [2021-03-11 14:36:05,902 INFO L226 Difference]: Without dead ends: 92 [2021-03-11 14:36:05,902 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-03-11 14:36:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2021-03-11 14:36:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 55 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2021-03-11 14:36:05,903 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 19 [2021-03-11 14:36:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,903 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2021-03-11 14:36:05,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2021-03-11 14:36:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:05,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable691 [2021-03-11 14:36:05,903 INFO L428 AbstractCegarLoop]: === Iteration 693 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1773987900, now seen corresponding path program 689 times [2021-03-11 14:36:05,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144210980] [2021-03-11 14:36:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,920 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:05,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:05,932 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:05,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:05,948 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:05,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:05,969 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:05,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144210980] [2021-03-11 14:36:05,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:05,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488970418] [2021-03-11 14:36:05,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:05,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:05,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:05,989 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,049 INFO L93 Difference]: Finished difference Result 108 states and 199 transitions. [2021-03-11 14:36:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:06,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:06,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,049 INFO L225 Difference]: With dead ends: 108 [2021-03-11 14:36:06,049 INFO L226 Difference]: Without dead ends: 96 [2021-03-11 14:36:06,050 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-03-11 14:36:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2021-03-11 14:36:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.0508474576271185) internal successors, (121), 59 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 121 transitions. [2021-03-11 14:36:06,050 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 121 transitions. Word has length 19 [2021-03-11 14:36:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,050 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 121 transitions. [2021-03-11 14:36:06,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 121 transitions. [2021-03-11 14:36:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:06,051 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,051 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable692 [2021-03-11 14:36:06,051 INFO L428 AbstractCegarLoop]: === Iteration 694 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1662104866, now seen corresponding path program 690 times [2021-03-11 14:36:06,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353279941] [2021-03-11 14:36:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:06,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:06,080 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:06,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:06,096 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:06,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:06,117 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:06,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353279941] [2021-03-11 14:36:06,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:06,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325379782] [2021-03-11 14:36:06,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:06,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:06,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:06,138 INFO L87 Difference]: Start difference. First operand 60 states and 121 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,190 INFO L93 Difference]: Finished difference Result 95 states and 178 transitions. [2021-03-11 14:36:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:06,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:06,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,190 INFO L225 Difference]: With dead ends: 95 [2021-03-11 14:36:06,190 INFO L226 Difference]: Without dead ends: 74 [2021-03-11 14:36:06,191 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-03-11 14:36:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 52. [2021-03-11 14:36:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.019607843137255) internal successors, (103), 51 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 103 transitions. [2021-03-11 14:36:06,191 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 103 transitions. Word has length 19 [2021-03-11 14:36:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,191 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 103 transitions. [2021-03-11 14:36:06,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 103 transitions. [2021-03-11 14:36:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:06,192 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,192 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable693 [2021-03-11 14:36:06,192 INFO L428 AbstractCegarLoop]: === Iteration 695 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,192 INFO L82 PathProgramCache]: Analyzing trace with hash 171031428, now seen corresponding path program 691 times [2021-03-11 14:36:06,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054114013] [2021-03-11 14:36:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,209 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:06,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:06,221 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:06,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:06,236 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:06,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:06,258 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:06,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054114013] [2021-03-11 14:36:06,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:06,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158927673] [2021-03-11 14:36:06,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:06,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:06,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:06,278 INFO L87 Difference]: Start difference. First operand 52 states and 103 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,316 INFO L93 Difference]: Finished difference Result 101 states and 182 transitions. [2021-03-11 14:36:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:06,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,317 INFO L225 Difference]: With dead ends: 101 [2021-03-11 14:36:06,317 INFO L226 Difference]: Without dead ends: 91 [2021-03-11 14:36:06,317 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-03-11 14:36:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 56. [2021-03-11 14:36:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 55 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2021-03-11 14:36:06,318 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 19 [2021-03-11 14:36:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,318 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2021-03-11 14:36:06,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2021-03-11 14:36:06,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:06,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,318 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable694 [2021-03-11 14:36:06,318 INFO L428 AbstractCegarLoop]: === Iteration 696 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,318 INFO L82 PathProgramCache]: Analyzing trace with hash 915733926, now seen corresponding path program 692 times [2021-03-11 14:36:06,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527259521] [2021-03-11 14:36:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,335 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:06,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:06,347 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:06,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:06,362 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:06,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:06,383 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:06,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527259521] [2021-03-11 14:36:06,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:06,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691841381] [2021-03-11 14:36:06,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:06,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:06,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:06,404 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,456 INFO L93 Difference]: Finished difference Result 103 states and 185 transitions. [2021-03-11 14:36:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:06,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,457 INFO L225 Difference]: With dead ends: 103 [2021-03-11 14:36:06,457 INFO L226 Difference]: Without dead ends: 89 [2021-03-11 14:36:06,457 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-03-11 14:36:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54. [2021-03-11 14:36:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 53 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 108 transitions. [2021-03-11 14:36:06,458 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 108 transitions. Word has length 19 [2021-03-11 14:36:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,458 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 108 transitions. [2021-03-11 14:36:06,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,458 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2021-03-11 14:36:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:06,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,458 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable695 [2021-03-11 14:36:06,458 INFO L428 AbstractCegarLoop]: === Iteration 697 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1781972386, now seen corresponding path program 693 times [2021-03-11 14:36:06,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815189369] [2021-03-11 14:36:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,476 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:06,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:06,487 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:06,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:06,515 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:06,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:06,537 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:06,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815189369] [2021-03-11 14:36:06,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:06,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313996034] [2021-03-11 14:36:06,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:06,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:06,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:06,557 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,595 INFO L93 Difference]: Finished difference Result 97 states and 172 transitions. [2021-03-11 14:36:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:06,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,596 INFO L225 Difference]: With dead ends: 97 [2021-03-11 14:36:06,596 INFO L226 Difference]: Without dead ends: 87 [2021-03-11 14:36:06,596 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-03-11 14:36:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 56. [2021-03-11 14:36:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.018181818181818) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 111 transitions. [2021-03-11 14:36:06,597 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 111 transitions. Word has length 19 [2021-03-11 14:36:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,597 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 111 transitions. [2021-03-11 14:36:06,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,597 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 111 transitions. [2021-03-11 14:36:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:06,597 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,597 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable696 [2021-03-11 14:36:06,597 INFO L428 AbstractCegarLoop]: === Iteration 698 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1023589914, now seen corresponding path program 694 times [2021-03-11 14:36:06,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22079651] [2021-03-11 14:36:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,614 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:06,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:06,626 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:06,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:06,653 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:06,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:06,674 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:06,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22079651] [2021-03-11 14:36:06,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:06,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696181233] [2021-03-11 14:36:06,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:06,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:06,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:06,695 INFO L87 Difference]: Start difference. First operand 56 states and 111 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,748 INFO L93 Difference]: Finished difference Result 91 states and 168 transitions. [2021-03-11 14:36:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,749 INFO L225 Difference]: With dead ends: 91 [2021-03-11 14:36:06,749 INFO L226 Difference]: Without dead ends: 76 [2021-03-11 14:36:06,749 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-03-11 14:36:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2021-03-11 14:36:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.0) internal successors, (106), 53 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 106 transitions. [2021-03-11 14:36:06,750 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 106 transitions. Word has length 19 [2021-03-11 14:36:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,750 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 106 transitions. [2021-03-11 14:36:06,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 106 transitions. [2021-03-11 14:36:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:06,750 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,750 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable697 [2021-03-11 14:36:06,750 INFO L428 AbstractCegarLoop]: === Iteration 699 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,750 INFO L82 PathProgramCache]: Analyzing trace with hash -157351454, now seen corresponding path program 695 times [2021-03-11 14:36:06,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101064082] [2021-03-11 14:36:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,768 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:06,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:06,779 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:06,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:06,795 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:06,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:06,818 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:06,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101064082] [2021-03-11 14:36:06,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:06,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451285775] [2021-03-11 14:36:06,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:06,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:06,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:06,839 INFO L87 Difference]: Start difference. First operand 54 states and 106 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,890 INFO L93 Difference]: Finished difference Result 84 states and 153 transitions. [2021-03-11 14:36:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:06,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,891 INFO L225 Difference]: With dead ends: 84 [2021-03-11 14:36:06,891 INFO L226 Difference]: Without dead ends: 72 [2021-03-11 14:36:06,891 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-03-11 14:36:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2021-03-11 14:36:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.0) internal successors, (114), 57 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 114 transitions. [2021-03-11 14:36:06,891 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 114 transitions. Word has length 19 [2021-03-11 14:36:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,891 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 114 transitions. [2021-03-11 14:36:06,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 114 transitions. [2021-03-11 14:36:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:06,892 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,892 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable698 [2021-03-11 14:36:06,892 INFO L428 AbstractCegarLoop]: === Iteration 700 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,892 INFO L82 PathProgramCache]: Analyzing trace with hash 587351044, now seen corresponding path program 696 times [2021-03-11 14:36:06,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496597361] [2021-03-11 14:36:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:06,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:06,921 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:06,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:06,936 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:06,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:06,957 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:06,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496597361] [2021-03-11 14:36:06,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:06,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207866428] [2021-03-11 14:36:06,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:06,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:06,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:06,978 INFO L87 Difference]: Start difference. First operand 58 states and 114 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,028 INFO L93 Difference]: Finished difference Result 71 states and 132 transitions. [2021-03-11 14:36:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:07,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,028 INFO L225 Difference]: With dead ends: 71 [2021-03-11 14:36:07,029 INFO L226 Difference]: Without dead ends: 50 [2021-03-11 14:36:07,029 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-03-11 14:36:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-03-11 14:36:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 99 transitions. [2021-03-11 14:36:07,029 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 99 transitions. Word has length 19 [2021-03-11 14:36:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,029 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 99 transitions. [2021-03-11 14:36:07,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 99 transitions. [2021-03-11 14:36:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:07,029 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,030 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699 [2021-03-11 14:36:07,030 INFO L428 AbstractCegarLoop]: === Iteration 701 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,030 INFO L82 PathProgramCache]: Analyzing trace with hash -821726946, now seen corresponding path program 697 times [2021-03-11 14:36:07,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666018713] [2021-03-11 14:36:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,043 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:07,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:07,051 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:36:07,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:36:07,063 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:07,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:07,079 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:07,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:07,100 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:07,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666018713] [2021-03-11 14:36:07,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:07,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339385849] [2021-03-11 14:36:07,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:07,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:07,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:07,121 INFO L87 Difference]: Start difference. First operand 50 states and 99 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,173 INFO L93 Difference]: Finished difference Result 83 states and 136 transitions. [2021-03-11 14:36:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:07,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:07,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,174 INFO L225 Difference]: With dead ends: 83 [2021-03-11 14:36:07,174 INFO L226 Difference]: Without dead ends: 73 [2021-03-11 14:36:07,174 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-03-11 14:36:07,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2021-03-11 14:36:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 2.0) internal successors, (100), 50 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 100 transitions. [2021-03-11 14:36:07,175 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 100 transitions. Word has length 19 [2021-03-11 14:36:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,175 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 100 transitions. [2021-03-11 14:36:07,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 100 transitions. [2021-03-11 14:36:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:07,175 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,175 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable700 [2021-03-11 14:36:07,175 INFO L428 AbstractCegarLoop]: === Iteration 702 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1061369284, now seen corresponding path program 698 times [2021-03-11 14:36:07,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471084868] [2021-03-11 14:36:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,185 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:07,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:07,193 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:36:07,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:36:07,205 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:07,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:07,221 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:07,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:07,243 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:07,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471084868] [2021-03-11 14:36:07,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:07,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175494318] [2021-03-11 14:36:07,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:07,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:07,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:07,263 INFO L87 Difference]: Start difference. First operand 51 states and 100 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,301 INFO L93 Difference]: Finished difference Result 83 states and 135 transitions. [2021-03-11 14:36:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:07,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:07,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,302 INFO L225 Difference]: With dead ends: 83 [2021-03-11 14:36:07,302 INFO L226 Difference]: Without dead ends: 72 [2021-03-11 14:36:07,302 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-03-11 14:36:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2021-03-11 14:36:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 98 transitions. [2021-03-11 14:36:07,303 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 98 transitions. Word has length 19 [2021-03-11 14:36:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,303 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 98 transitions. [2021-03-11 14:36:07,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,303 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 98 transitions. [2021-03-11 14:36:07,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:07,303 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,303 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable701 [2021-03-11 14:36:07,303 INFO L428 AbstractCegarLoop]: === Iteration 703 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,303 INFO L82 PathProgramCache]: Analyzing trace with hash 789214012, now seen corresponding path program 699 times [2021-03-11 14:36:07,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760364992] [2021-03-11 14:36:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:07,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:07,321 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:36:07,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:36:07,333 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:07,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:07,349 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:07,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:07,370 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:07,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760364992] [2021-03-11 14:36:07,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:07,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391835005] [2021-03-11 14:36:07,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:07,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:07,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:07,391 INFO L87 Difference]: Start difference. First operand 50 states and 98 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,442 INFO L93 Difference]: Finished difference Result 86 states and 143 transitions. [2021-03-11 14:36:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:07,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,443 INFO L225 Difference]: With dead ends: 86 [2021-03-11 14:36:07,443 INFO L226 Difference]: Without dead ends: 76 [2021-03-11 14:36:07,443 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-03-11 14:36:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2021-03-11 14:36:07,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 51 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2021-03-11 14:36:07,444 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 19 [2021-03-11 14:36:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,444 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2021-03-11 14:36:07,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2021-03-11 14:36:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:07,444 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,444 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable702 [2021-03-11 14:36:07,444 INFO L428 AbstractCegarLoop]: === Iteration 704 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,444 INFO L82 PathProgramCache]: Analyzing trace with hash 144183864, now seen corresponding path program 700 times [2021-03-11 14:36:07,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986641196] [2021-03-11 14:36:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,454 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:07,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:07,462 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:36:07,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:36:07,474 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:07,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:07,490 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:07,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:07,511 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:07,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986641196] [2021-03-11 14:36:07,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:07,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151398994] [2021-03-11 14:36:07,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:07,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:07,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:07,531 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,584 INFO L93 Difference]: Finished difference Result 88 states and 146 transitions. [2021-03-11 14:36:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:07,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,585 INFO L225 Difference]: With dead ends: 88 [2021-03-11 14:36:07,585 INFO L226 Difference]: Without dead ends: 74 [2021-03-11 14:36:07,585 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-03-11 14:36:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 50. [2021-03-11 14:36:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 97 transitions. [2021-03-11 14:36:07,585 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 97 transitions. Word has length 19 [2021-03-11 14:36:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,585 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 97 transitions. [2021-03-11 14:36:07,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 97 transitions. [2021-03-11 14:36:07,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:07,586 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,586 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable703 [2021-03-11 14:36:07,586 INFO L428 AbstractCegarLoop]: === Iteration 705 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2134454664, now seen corresponding path program 701 times [2021-03-11 14:36:07,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286743598] [2021-03-11 14:36:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:07,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:07,604 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:36:07,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:36:07,616 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:07,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:07,632 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:07,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:07,653 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:07,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286743598] [2021-03-11 14:36:07,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:07,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397968811] [2021-03-11 14:36:07,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:07,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:07,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:07,674 INFO L87 Difference]: Start difference. First operand 50 states and 97 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,712 INFO L93 Difference]: Finished difference Result 86 states and 142 transitions. [2021-03-11 14:36:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:07,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,713 INFO L225 Difference]: With dead ends: 86 [2021-03-11 14:36:07,713 INFO L226 Difference]: Without dead ends: 76 [2021-03-11 14:36:07,713 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-03-11 14:36:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2021-03-11 14:36:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2021-03-11 14:36:07,713 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 19 [2021-03-11 14:36:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,714 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2021-03-11 14:36:07,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2021-03-11 14:36:07,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:07,714 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,714 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable704 [2021-03-11 14:36:07,714 INFO L428 AbstractCegarLoop]: === Iteration 706 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1389752166, now seen corresponding path program 702 times [2021-03-11 14:36:07,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311071475] [2021-03-11 14:36:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:07,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:07,732 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:36:07,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:36:07,744 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:07,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:07,760 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:07,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:07,780 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:07,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311071475] [2021-03-11 14:36:07,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:07,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468741035] [2021-03-11 14:36:07,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:07,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:07,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:07,801 INFO L87 Difference]: Start difference. First operand 52 states and 100 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,853 INFO L93 Difference]: Finished difference Result 88 states and 145 transitions. [2021-03-11 14:36:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:07,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:07,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,854 INFO L225 Difference]: With dead ends: 88 [2021-03-11 14:36:07,854 INFO L226 Difference]: Without dead ends: 73 [2021-03-11 14:36:07,854 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-03-11 14:36:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2021-03-11 14:36:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 48 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 95 transitions. [2021-03-11 14:36:07,855 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 95 transitions. Word has length 19 [2021-03-11 14:36:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,855 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 95 transitions. [2021-03-11 14:36:07,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 95 transitions. [2021-03-11 14:36:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:07,855 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,855 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable705 [2021-03-11 14:36:07,855 INFO L428 AbstractCegarLoop]: === Iteration 707 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1872802496, now seen corresponding path program 703 times [2021-03-11 14:36:07,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867866173] [2021-03-11 14:36:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,865 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:07,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:07,873 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:07,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:07,884 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:07,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:07,901 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:07,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:07,923 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:07,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867866173] [2021-03-11 14:36:07,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:07,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496116816] [2021-03-11 14:36:07,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:07,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:07,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:07,943 INFO L87 Difference]: Start difference. First operand 49 states and 95 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,995 INFO L93 Difference]: Finished difference Result 81 states and 130 transitions. [2021-03-11 14:36:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:07,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,996 INFO L225 Difference]: With dead ends: 81 [2021-03-11 14:36:07,996 INFO L226 Difference]: Without dead ends: 71 [2021-03-11 14:36:07,996 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-03-11 14:36:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 49. [2021-03-11 14:36:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 48 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 94 transitions. [2021-03-11 14:36:07,997 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 94 transitions. Word has length 19 [2021-03-11 14:36:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,997 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 94 transitions. [2021-03-11 14:36:07,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 94 transitions. [2021-03-11 14:36:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:07,997 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,997 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable706 [2021-03-11 14:36:07,997 INFO L428 AbstractCegarLoop]: === Iteration 708 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1633160158, now seen corresponding path program 704 times [2021-03-11 14:36:07,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885466141] [2021-03-11 14:36:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,008 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:08,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:08,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:08,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:08,027 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:08,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:08,044 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:08,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:08,065 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:08,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885466141] [2021-03-11 14:36:08,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:08,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245143510] [2021-03-11 14:36:08,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:08,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:08,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:08,089 INFO L87 Difference]: Start difference. First operand 49 states and 94 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,125 INFO L93 Difference]: Finished difference Result 81 states and 129 transitions. [2021-03-11 14:36:08,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:08,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,126 INFO L225 Difference]: With dead ends: 81 [2021-03-11 14:36:08,126 INFO L226 Difference]: Without dead ends: 70 [2021-03-11 14:36:08,126 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-03-11 14:36:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2021-03-11 14:36:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 47 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 92 transitions. [2021-03-11 14:36:08,126 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 92 transitions. Word has length 19 [2021-03-11 14:36:08,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,126 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 92 transitions. [2021-03-11 14:36:08,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,127 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 92 transitions. [2021-03-11 14:36:08,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:08,127 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,127 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable707 [2021-03-11 14:36:08,127 INFO L428 AbstractCegarLoop]: === Iteration 709 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,127 INFO L82 PathProgramCache]: Analyzing trace with hash 799717116, now seen corresponding path program 705 times [2021-03-11 14:36:08,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265650182] [2021-03-11 14:36:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:08,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:08,144 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:08,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:08,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:08,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:08,171 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:08,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:08,192 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:08,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265650182] [2021-03-11 14:36:08,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:08,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517816765] [2021-03-11 14:36:08,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:08,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:08,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:08,213 INFO L87 Difference]: Start difference. First operand 48 states and 92 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,264 INFO L93 Difference]: Finished difference Result 83 states and 136 transitions. [2021-03-11 14:36:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:08,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:08,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,264 INFO L225 Difference]: With dead ends: 83 [2021-03-11 14:36:08,264 INFO L226 Difference]: Without dead ends: 73 [2021-03-11 14:36:08,264 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-03-11 14:36:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 50. [2021-03-11 14:36:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 49 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 95 transitions. [2021-03-11 14:36:08,265 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 95 transitions. Word has length 19 [2021-03-11 14:36:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,265 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 95 transitions. [2021-03-11 14:36:08,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 95 transitions. [2021-03-11 14:36:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:08,265 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,265 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable708 [2021-03-11 14:36:08,266 INFO L428 AbstractCegarLoop]: === Iteration 710 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1754696120, now seen corresponding path program 706 times [2021-03-11 14:36:08,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151696367] [2021-03-11 14:36:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,275 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:08,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:08,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:08,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:08,294 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:08,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:08,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:08,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:08,330 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:08,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151696367] [2021-03-11 14:36:08,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:08,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240466897] [2021-03-11 14:36:08,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:08,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:08,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:08,350 INFO L87 Difference]: Start difference. First operand 50 states and 95 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,402 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2021-03-11 14:36:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:08,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:08,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,403 INFO L225 Difference]: With dead ends: 77 [2021-03-11 14:36:08,403 INFO L226 Difference]: Without dead ends: 62 [2021-03-11 14:36:08,403 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-03-11 14:36:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2021-03-11 14:36:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 91 transitions. [2021-03-11 14:36:08,403 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 91 transitions. Word has length 19 [2021-03-11 14:36:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,403 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 91 transitions. [2021-03-11 14:36:08,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 91 transitions. [2021-03-11 14:36:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:08,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,404 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable709 [2021-03-11 14:36:08,404 INFO L428 AbstractCegarLoop]: === Iteration 711 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2123951560, now seen corresponding path program 707 times [2021-03-11 14:36:08,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193598501] [2021-03-11 14:36:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:08,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:08,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:08,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:08,433 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:08,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:08,459 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:08,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:08,481 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:08,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193598501] [2021-03-11 14:36:08,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:08,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638668505] [2021-03-11 14:36:08,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:08,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:08,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:08,501 INFO L87 Difference]: Start difference. First operand 48 states and 91 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,536 INFO L93 Difference]: Finished difference Result 83 states and 135 transitions. [2021-03-11 14:36:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:08,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,537 INFO L225 Difference]: With dead ends: 83 [2021-03-11 14:36:08,537 INFO L226 Difference]: Without dead ends: 73 [2021-03-11 14:36:08,537 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-03-11 14:36:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 50. [2021-03-11 14:36:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.9183673469387754) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 94 transitions. [2021-03-11 14:36:08,537 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 94 transitions. Word has length 19 [2021-03-11 14:36:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,537 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 94 transitions. [2021-03-11 14:36:08,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,538 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 94 transitions. [2021-03-11 14:36:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:08,538 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,538 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable710 [2021-03-11 14:36:08,538 INFO L428 AbstractCegarLoop]: === Iteration 712 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,538 INFO L82 PathProgramCache]: Analyzing trace with hash -634546564, now seen corresponding path program 708 times [2021-03-11 14:36:08,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053004113] [2021-03-11 14:36:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,548 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:08,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:08,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:08,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:08,567 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:08,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:08,593 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:08,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:08,614 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:08,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053004113] [2021-03-11 14:36:08,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:08,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369967574] [2021-03-11 14:36:08,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:08,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:08,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:08,634 INFO L87 Difference]: Start difference. First operand 50 states and 94 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,685 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2021-03-11 14:36:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,685 INFO L225 Difference]: With dead ends: 77 [2021-03-11 14:36:08,685 INFO L226 Difference]: Without dead ends: 61 [2021-03-11 14:36:08,685 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-03-11 14:36:08,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2021-03-11 14:36:08,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 89 transitions. [2021-03-11 14:36:08,686 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 89 transitions. Word has length 19 [2021-03-11 14:36:08,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,686 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 89 transitions. [2021-03-11 14:36:08,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 89 transitions. [2021-03-11 14:36:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:08,686 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,686 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable711 [2021-03-11 14:36:08,686 INFO L428 AbstractCegarLoop]: === Iteration 713 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1883305600, now seen corresponding path program 709 times [2021-03-11 14:36:08,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620332412] [2021-03-11 14:36:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,696 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:08,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:08,704 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:08,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:08,716 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:08,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:08,732 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:08,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:08,753 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:08,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620332412] [2021-03-11 14:36:08,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:08,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603393982] [2021-03-11 14:36:08,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:08,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:08,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:08,773 INFO L87 Difference]: Start difference. First operand 47 states and 89 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,824 INFO L93 Difference]: Finished difference Result 79 states and 126 transitions. [2021-03-11 14:36:08,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:08,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:08,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,825 INFO L225 Difference]: With dead ends: 79 [2021-03-11 14:36:08,825 INFO L226 Difference]: Without dead ends: 69 [2021-03-11 14:36:08,825 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-03-11 14:36:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2021-03-11 14:36:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.891304347826087) internal successors, (87), 46 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 87 transitions. [2021-03-11 14:36:08,826 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 87 transitions. Word has length 19 [2021-03-11 14:36:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,826 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 87 transitions. [2021-03-11 14:36:08,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 87 transitions. [2021-03-11 14:36:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:08,826 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,826 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable712 [2021-03-11 14:36:08,826 INFO L428 AbstractCegarLoop]: === Iteration 714 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1238275452, now seen corresponding path program 710 times [2021-03-11 14:36:08,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323796599] [2021-03-11 14:36:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,837 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:08,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:08,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:08,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:08,857 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:08,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:08,873 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:08,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:08,894 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:08,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323796599] [2021-03-11 14:36:08,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:08,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78281107] [2021-03-11 14:36:08,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:08,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:08,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:08,914 INFO L87 Difference]: Start difference. First operand 47 states and 87 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,963 INFO L93 Difference]: Finished difference Result 81 states and 129 transitions. [2021-03-11 14:36:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:08,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:08,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,964 INFO L225 Difference]: With dead ends: 81 [2021-03-11 14:36:08,964 INFO L226 Difference]: Without dead ends: 67 [2021-03-11 14:36:08,964 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-03-11 14:36:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2021-03-11 14:36:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 44 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 82 transitions. [2021-03-11 14:36:08,965 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 82 transitions. Word has length 19 [2021-03-11 14:36:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,965 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 82 transitions. [2021-03-11 14:36:08,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 82 transitions. [2021-03-11 14:36:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:08,965 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,965 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable713 [2021-03-11 14:36:08,965 INFO L428 AbstractCegarLoop]: === Iteration 715 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,965 INFO L82 PathProgramCache]: Analyzing trace with hash -800720738, now seen corresponding path program 711 times [2021-03-11 14:36:08,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598542518] [2021-03-11 14:36:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,977 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:08,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:08,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:08,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:08,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:08,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:09,012 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:09,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:09,033 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:09,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598542518] [2021-03-11 14:36:09,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:09,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221574093] [2021-03-11 14:36:09,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:09,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:09,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:09,054 INFO L87 Difference]: Start difference. First operand 45 states and 82 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,104 INFO L93 Difference]: Finished difference Result 76 states and 118 transitions. [2021-03-11 14:36:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,105 INFO L225 Difference]: With dead ends: 76 [2021-03-11 14:36:09,105 INFO L226 Difference]: Without dead ends: 66 [2021-03-11 14:36:09,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-03-11 14:36:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2021-03-11 14:36:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 77 transitions. [2021-03-11 14:36:09,105 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 77 transitions. Word has length 19 [2021-03-11 14:36:09,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,105 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 77 transitions. [2021-03-11 14:36:09,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,106 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 77 transitions. [2021-03-11 14:36:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:09,106 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,106 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable714 [2021-03-11 14:36:09,106 INFO L428 AbstractCegarLoop]: === Iteration 716 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,106 INFO L82 PathProgramCache]: Analyzing trace with hash 154258266, now seen corresponding path program 712 times [2021-03-11 14:36:09,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140455014] [2021-03-11 14:36:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,118 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:09,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:09,128 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:09,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:09,142 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:09,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:09,158 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:09,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:09,179 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:09,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140455014] [2021-03-11 14:36:09,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:09,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844953541] [2021-03-11 14:36:09,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:09,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:09,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:09,200 INFO L87 Difference]: Start difference. First operand 43 states and 77 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,251 INFO L93 Difference]: Finished difference Result 70 states and 114 transitions. [2021-03-11 14:36:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,252 INFO L225 Difference]: With dead ends: 70 [2021-03-11 14:36:09,252 INFO L226 Difference]: Without dead ends: 55 [2021-03-11 14:36:09,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-03-11 14:36:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2021-03-11 14:36:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.8) internal successors, (72), 40 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 72 transitions. [2021-03-11 14:36:09,253 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 72 transitions. Word has length 19 [2021-03-11 14:36:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,253 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 72 transitions. [2021-03-11 14:36:09,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 72 transitions. [2021-03-11 14:36:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:09,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,253 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable715 [2021-03-11 14:36:09,253 INFO L428 AbstractCegarLoop]: === Iteration 717 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,253 INFO L82 PathProgramCache]: Analyzing trace with hash 777853504, now seen corresponding path program 713 times [2021-03-11 14:36:09,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441580545] [2021-03-11 14:36:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,263 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:09,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:09,271 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:09,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:09,283 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:09,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:09,299 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:09,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:09,320 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:09,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441580545] [2021-03-11 14:36:09,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:09,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358001744] [2021-03-11 14:36:09,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:09,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:09,340 INFO L87 Difference]: Start difference. First operand 41 states and 72 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,392 INFO L93 Difference]: Finished difference Result 71 states and 119 transitions. [2021-03-11 14:36:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,393 INFO L225 Difference]: With dead ends: 71 [2021-03-11 14:36:09,393 INFO L226 Difference]: Without dead ends: 59 [2021-03-11 14:36:09,393 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-03-11 14:36:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2021-03-11 14:36:09,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 44 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 80 transitions. [2021-03-11 14:36:09,393 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 80 transitions. Word has length 19 [2021-03-11 14:36:09,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,393 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 80 transitions. [2021-03-11 14:36:09,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,393 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 80 transitions. [2021-03-11 14:36:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:09,394 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,394 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable716 [2021-03-11 14:36:09,394 INFO L428 AbstractCegarLoop]: === Iteration 718 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1633160158, now seen corresponding path program 714 times [2021-03-11 14:36:09,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858984015] [2021-03-11 14:36:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:09,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:09,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:09,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:09,440 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:09,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:09,458 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:09,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:09,482 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:09,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858984015] [2021-03-11 14:36:09,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:09,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294242036] [2021-03-11 14:36:09,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:09,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:09,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:09,508 INFO L87 Difference]: Start difference. First operand 45 states and 80 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,570 INFO L93 Difference]: Finished difference Result 58 states and 98 transitions. [2021-03-11 14:36:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,571 INFO L225 Difference]: With dead ends: 58 [2021-03-11 14:36:09,571 INFO L226 Difference]: Without dead ends: 39 [2021-03-11 14:36:09,571 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-03-11 14:36:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-03-11 14:36:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 68 transitions. [2021-03-11 14:36:09,572 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 68 transitions. Word has length 19 [2021-03-11 14:36:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,572 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 68 transitions. [2021-03-11 14:36:09,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 68 transitions. [2021-03-11 14:36:09,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:09,572 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,572 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable717 [2021-03-11 14:36:09,573 INFO L428 AbstractCegarLoop]: === Iteration 719 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1654166366, now seen corresponding path program 715 times [2021-03-11 14:36:09,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838563162] [2021-03-11 14:36:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,586 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:09,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:09,595 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:09,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:09,609 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:09,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:09,630 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:09,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:09,655 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:09,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838563162] [2021-03-11 14:36:09,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:09,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040180810] [2021-03-11 14:36:09,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:09,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:09,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:09,675 INFO L87 Difference]: Start difference. First operand 39 states and 68 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,709 INFO L93 Difference]: Finished difference Result 58 states and 88 transitions. [2021-03-11 14:36:09,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:09,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,709 INFO L225 Difference]: With dead ends: 58 [2021-03-11 14:36:09,709 INFO L226 Difference]: Without dead ends: 48 [2021-03-11 14:36:09,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-03-11 14:36:09,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2021-03-11 14:36:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 66 transitions. [2021-03-11 14:36:09,710 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 66 transitions. Word has length 19 [2021-03-11 14:36:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,710 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 66 transitions. [2021-03-11 14:36:09,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 66 transitions. [2021-03-11 14:36:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:09,710 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,710 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable718 [2021-03-11 14:36:09,710 INFO L428 AbstractCegarLoop]: === Iteration 720 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1896098432, now seen corresponding path program 716 times [2021-03-11 14:36:09,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059703404] [2021-03-11 14:36:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,720 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:09,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:09,728 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:09,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:09,740 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:09,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:09,756 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:09,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:09,777 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:09,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059703404] [2021-03-11 14:36:09,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:09,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265070513] [2021-03-11 14:36:09,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:09,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:09,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:09,798 INFO L87 Difference]: Start difference. First operand 39 states and 66 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,845 INFO L93 Difference]: Finished difference Result 60 states and 91 transitions. [2021-03-11 14:36:09,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:09,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:09,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,846 INFO L225 Difference]: With dead ends: 60 [2021-03-11 14:36:09,846 INFO L226 Difference]: Without dead ends: 46 [2021-03-11 14:36:09,846 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-03-11 14:36:09,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2021-03-11 14:36:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 61 transitions. [2021-03-11 14:36:09,847 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 61 transitions. Word has length 19 [2021-03-11 14:36:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,847 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 61 transitions. [2021-03-11 14:36:09,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 61 transitions. [2021-03-11 14:36:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:09,847 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,847 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable719 [2021-03-11 14:36:09,847 INFO L428 AbstractCegarLoop]: === Iteration 721 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1029859972, now seen corresponding path program 717 times [2021-03-11 14:36:09,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636450362] [2021-03-11 14:36:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,857 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:09,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:09,865 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:09,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:09,877 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:09,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:09,905 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:09,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:09,927 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:09,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636450362] [2021-03-11 14:36:09,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:09,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352685267] [2021-03-11 14:36:09,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:09,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:09,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:09,948 INFO L87 Difference]: Start difference. First operand 37 states and 61 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,980 INFO L93 Difference]: Finished difference Result 54 states and 78 transitions. [2021-03-11 14:36:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:09,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,981 INFO L225 Difference]: With dead ends: 54 [2021-03-11 14:36:09,981 INFO L226 Difference]: Without dead ends: 44 [2021-03-11 14:36:09,981 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-03-11 14:36:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2021-03-11 14:36:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2021-03-11 14:36:09,981 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 19 [2021-03-11 14:36:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,981 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2021-03-11 14:36:09,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2021-03-11 14:36:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:09,982 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,982 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable720 [2021-03-11 14:36:09,982 INFO L428 AbstractCegarLoop]: === Iteration 722 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash 459545024, now seen corresponding path program 718 times [2021-03-11 14:36:09,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563772555] [2021-03-11 14:36:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:10,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:10,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:10,011 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:10,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:10,023 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:10,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:10,051 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:10,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:10,072 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:10,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:10,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563772555] [2021-03-11 14:36:10,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:10,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:10,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120325] [2021-03-11 14:36:10,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:10,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:10,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:10,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:10,093 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:10,142 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2021-03-11 14:36:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:10,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:10,142 INFO L225 Difference]: With dead ends: 48 [2021-03-11 14:36:10,142 INFO L226 Difference]: Without dead ends: 33 [2021-03-11 14:36:10,142 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:10,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-03-11 14:36:10,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-03-11 14:36:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2021-03-11 14:36:10,143 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 19 [2021-03-11 14:36:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:10,143 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2021-03-11 14:36:10,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2021-03-11 14:36:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:10,143 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:10,143 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:10,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable721 [2021-03-11 14:36:10,143 INFO L428 AbstractCegarLoop]: === Iteration 723 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:10,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:10,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1325783484, now seen corresponding path program 719 times [2021-03-11 14:36:10,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:10,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362780973] [2021-03-11 14:36:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:10,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:10,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:10,153 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:10,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:10,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:10,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:10,173 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:10,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:10,188 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:10,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:10,209 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:10,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:10,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362780973] [2021-03-11 14:36:10,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:10,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:10,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685118906] [2021-03-11 14:36:10,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:10,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:10,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:10,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:10,230 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:10,275 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2021-03-11 14:36:10,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:10,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:10,275 INFO L225 Difference]: With dead ends: 41 [2021-03-11 14:36:10,275 INFO L226 Difference]: Without dead ends: 29 [2021-03-11 14:36:10,275 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-03-11 14:36:10,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-03-11 14:36:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2021-03-11 14:36:10,276 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 19 [2021-03-11 14:36:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:10,276 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2021-03-11 14:36:10,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2021-03-11 14:36:10,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 14:36:10,276 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:10,276 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:10,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable722 [2021-03-11 14:36:10,276 INFO L428 AbstractCegarLoop]: === Iteration 724 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:10,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2070485982, now seen corresponding path program 720 times [2021-03-11 14:36:10,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:10,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652315794] [2021-03-11 14:36:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:10,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:10,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:10,286 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:36:10,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:36:10,294 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:10,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:10,306 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:10,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:10,322 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:10,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:10,342 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-11 14:36:10,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:10,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:10,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652315794] [2021-03-11 14:36:10,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:10,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 14:36:10,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996893502] [2021-03-11 14:36:10,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:36:10,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:10,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:36:10,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:36:10,364 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:10,407 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2021-03-11 14:36:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:36:10,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 14:36:10,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:10,407 INFO L225 Difference]: With dead ends: 28 [2021-03-11 14:36:10,407 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 14:36:10,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 14:36:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 14:36:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 14:36:10,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-03-11 14:36:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:10,408 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 14:36:10,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 14:36:10,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 14:36:10,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable723 [2021-03-11 14:36:10,410 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:36:10 BasicIcfg [2021-03-11 14:36:10,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:36:10,411 INFO L168 Benchmark]: Toolchain (without parser) took 118109.64 ms. Allocated memory was 255.9 MB in the beginning and 557.8 MB in the end (delta: 302.0 MB). Free memory was 236.7 MB in the beginning and 280.5 MB in the end (delta: -43.9 MB). Peak memory consumption was 258.4 MB. Max. memory is 16.0 GB. [2021-03-11 14:36:10,411 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:36:10,411 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.01 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:36:10,411 INFO L168 Benchmark]: Boogie Preprocessor took 13.85 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.8 MB in the end (delta: 880.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:36:10,411 INFO L168 Benchmark]: RCFGBuilder took 188.80 ms. Allocated memory is still 255.9 MB. Free memory was 233.7 MB in the beginning and 240.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. [2021-03-11 14:36:10,411 INFO L168 Benchmark]: TraceAbstraction took 117870.32 ms. Allocated memory was 255.9 MB in the beginning and 557.8 MB in the end (delta: 302.0 MB). Free memory was 239.6 MB in the beginning and 280.5 MB in the end (delta: -40.9 MB). Peak memory consumption was 259.5 MB. Max. memory is 16.0 GB. [2021-03-11 14:36:10,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.01 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.85 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.8 MB in the end (delta: 880.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 188.80 ms. Allocated memory is still 255.9 MB. Free memory was 233.7 MB in the beginning and 240.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 117870.32 ms. Allocated memory was 255.9 MB in the beginning and 557.8 MB in the end (delta: 302.0 MB). Free memory was 239.6 MB in the beginning and 280.5 MB in the end (delta: -40.9 MB). Peak memory consumption was 259.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 213.1ms, 52 PlacesBefore, 45 PlacesAfterwards, 63 TransitionsBefore, 56 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 2295 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2295, positive: 2295, positive conditional: 0, positive unconditional: 2295, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 440, positive: 440, positive conditional: 0, positive unconditional: 440, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 440, positive: 440, positive conditional: 0, positive unconditional: 440, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2295, positive: 1855, positive conditional: 0, positive unconditional: 1855, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 440, unknown conditional: 0, unknown unconditional: 440] , Statistics on independence cache: Total cache size (in pairs): 195, Positive cache size: 195, Positive conditional cache size: 0, Positive unconditional cache size: 195, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 117688.8ms, OverallIterations: 724, TraceHistogramMax: 1, EmptinessCheckTime: 272.0ms, AutomataDifference: 43749.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 319.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48598 SDtfs, 88758 SDslu, 115691 SDs, 0 SdLazy, 26038 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14383.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5772 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 5044 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 80324.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=794occurred in iteration=0, InterpolantAutomatonStates: 5772, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2486.0ms AutomataMinimizationTime, 724 MinimizatonAttempts, 91280 StatesRemovedByMinimization, 714 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 146.0ms SsaConstructionTime, 401.9ms SatisfiabilityAnalysisTime, 68652.8ms InterpolantComputationTime, 13756 NumberOfCodeBlocks, 13756 NumberOfCodeBlocksAsserted, 724 NumberOfCheckSat, 13032 ConstructedInterpolants, 0 QuantifiedInterpolants, 300438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 724 InterpolantComputations, 724 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...