/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_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:33:54,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:33:54,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:33:54,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 14:33:54,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:33:54,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:33:54,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:33:54,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:33:54,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:33:54,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:33:54,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:33:54,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:33:54,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:33:54,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:33:54,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:33:54,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:33:54,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 14:33:54,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 14:33:54,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 14:33:54,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 14:33:54,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 14:33:54,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 14:33:54,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 14:33:54,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 14:33:54,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 14:33:54,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:33:54,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:33:54,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:33:54,269 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 14:33:54,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:33:54,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:33:54,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:33:54,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:33:54,309 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:33:54,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:33:54,310 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:33:54,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:33:54,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:33:54,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:33:54,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:33:54,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:33:54,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:33:54,311 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:33:54,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:33:54,312 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:33:54,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:33:54,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:33:54,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:33:54,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:33:54,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:33:54,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:33:54,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:33:54,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:33:54,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:33:54,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:33:54,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:33:54,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:33:54,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:33:54,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:33:54,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:33:54,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:33:54,612 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 14:33:54,617 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 14:33:54,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2021-03-11 14:33:54,618 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2021-03-11 14:33:54,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:33:54,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 14:33:54,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:33:54,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:33:54,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:33:54,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/1) ... [2021-03-11 14:33:54,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/1) ... [2021-03-11 14:33:54,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:33:54,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:33:54,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:33:54,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:33:54,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/1) ... [2021-03-11 14:33:54,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/1) ... [2021-03-11 14:33:54,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/1) ... [2021-03-11 14:33:54,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/1) ... [2021-03-11 14:33:54,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/1) ... [2021-03-11 14:33:54,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/1) ... [2021-03-11 14:33:54,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/1) ... [2021-03-11 14:33:54,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:33:54,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:33:54,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:33:54,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:33:54,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (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 14:33:54,758 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 14:33:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 14:33:54,758 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 14:33:54,760 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 14:33:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 14:33:54,760 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 14:33:54,760 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 14:33:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 14:33:54,760 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 14:33:54,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 14:33:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 14:33:54,761 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 14:33:54,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 14:33:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 14:33:54,761 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 14:33:54,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 14:33:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:33:54,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:33:54,763 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 14:33:54,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:33:54,909 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 14:33:54,911 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:33:54 BoogieIcfgContainer [2021-03-11 14:33:54,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:33:54,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:33:54,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:33:54,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:33:54,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:54" (1/2) ... [2021-03-11 14:33:54,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9a271c and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:33:54, skipping insertion in model container [2021-03-11 14:33:54,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:33:54" (2/2) ... [2021-03-11 14:33:54,919 INFO L111 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2021-03-11 14:33:54,923 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:33:54,923 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:33:54,926 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:33:54,926 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:33:55,030 INFO L149 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2021-03-11 14:33:55,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-11 14:33:55,056 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:33:55,056 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:33:55,057 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:33:55,057 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:33:55,057 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:33:55,057 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:33:55,057 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:33:55,057 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:33:55,066 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:33:55,073 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 48 transitions, 196 flow [2021-03-11 14:33:55,075 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 48 transitions, 196 flow [2021-03-11 14:33:55,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions, 196 flow [2021-03-11 14:33:55,121 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2021-03-11 14:33:55,121 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-03-11 14:33:55,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 331 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2021-03-11 14:33:55,139 INFO L116 LiptonReduction]: Number of co-enabled transitions 440 [2021-03-11 14:33:55,246 INFO L131 LiptonReduction]: Checked pairs total: 1330 [2021-03-11 14:33:55,246 INFO L133 LiptonReduction]: Total number of compositions: 6 [2021-03-11 14:33:55,253 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 42 transitions, 184 flow [2021-03-11 14:33:55,279 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 276 states, 274 states have (on average 3.2554744525547443) internal successors, (892), 275 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 274 states have (on average 3.2554744525547443) internal successors, (892), 275 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:55,296 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:55,297 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:55,297 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:55,301 INFO L82 PathProgramCache]: Analyzing trace with hash -214938694, now seen corresponding path program 1 times [2021-03-11 14:33:55,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:55,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301044775] [2021-03-11 14:33:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:55,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:55,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:33:55,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:55,408 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 14:33:55,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301044775] [2021-03-11 14:33:55,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:55,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:33:55,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153254025] [2021-03-11 14:33:55,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:33:55,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:55,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:33:55,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:33:55,424 INFO L87 Difference]: Start difference. First operand has 276 states, 274 states have (on average 3.2554744525547443) internal successors, (892), 275 states have internal predecessors, (892), 0 states have call successors, (0), 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 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:55,449 INFO L93 Difference]: Finished difference Result 228 states and 684 transitions. [2021-03-11 14:33:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:33:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:55,460 INFO L225 Difference]: With dead ends: 228 [2021-03-11 14:33:55,461 INFO L226 Difference]: Without dead ends: 227 [2021-03-11 14:33:55,461 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:33:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-03-11 14:33:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-03-11 14:33:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 3.02212389380531) internal successors, (683), 226 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 683 transitions. [2021-03-11 14:33:55,506 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 683 transitions. Word has length 16 [2021-03-11 14:33:55,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:55,507 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 683 transitions. [2021-03-11 14:33:55,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,507 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 683 transitions. [2021-03-11 14:33:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:55,510 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:55,510 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:55,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:33:55,510 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:55,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:55,511 INFO L82 PathProgramCache]: Analyzing trace with hash 636205438, now seen corresponding path program 1 times [2021-03-11 14:33:55,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:55,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13665321] [2021-03-11 14:33:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:55,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:55,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:55,598 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:55,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:55,613 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:33:55,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:33:55,634 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:33:55,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:33:55,662 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:55,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:55,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13665321] [2021-03-11 14:33:55,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:55,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:55,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419090681] [2021-03-11 14:33:55,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:55,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:55,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:55,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:55,696 INFO L87 Difference]: Start difference. First operand 227 states and 683 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:55,765 INFO L93 Difference]: Finished difference Result 455 states and 1244 transitions. [2021-03-11 14:33:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:55,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:55,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:55,769 INFO L225 Difference]: With dead ends: 455 [2021-03-11 14:33:55,769 INFO L226 Difference]: Without dead ends: 415 [2021-03-11 14:33:55,770 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:55,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-03-11 14:33:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 241. [2021-03-11 14:33:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.9875) internal successors, (717), 240 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 717 transitions. [2021-03-11 14:33:55,788 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 717 transitions. Word has length 16 [2021-03-11 14:33:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:55,788 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 717 transitions. [2021-03-11 14:33:55,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 717 transitions. [2021-03-11 14:33:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:55,790 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:55,790 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:55,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:33:55,791 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash 638110078, now seen corresponding path program 1 times [2021-03-11 14:33:55,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:55,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071427368] [2021-03-11 14:33:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:55,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:55,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:33:55,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:55,822 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 14:33:55,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071427368] [2021-03-11 14:33:55,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:55,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:33:55,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931160235] [2021-03-11 14:33:55,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:33:55,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:55,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:33:55,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:33:55,825 INFO L87 Difference]: Start difference. First operand 241 states and 717 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:55,833 INFO L93 Difference]: Finished difference Result 169 states and 473 transitions. [2021-03-11 14:33:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:33:55,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:55,836 INFO L225 Difference]: With dead ends: 169 [2021-03-11 14:33:55,836 INFO L226 Difference]: Without dead ends: 169 [2021-03-11 14:33:55,836 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:33:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-03-11 14:33:55,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-03-11 14:33:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.8154761904761907) internal successors, (473), 168 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 473 transitions. [2021-03-11 14:33:55,856 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 473 transitions. Word has length 16 [2021-03-11 14:33:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:55,857 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 473 transitions. [2021-03-11 14:33:55,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 473 transitions. [2021-03-11 14:33:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:55,858 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:55,858 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:55,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 14:33:55,859 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:55,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:55,859 INFO L82 PathProgramCache]: Analyzing trace with hash 638367688, now seen corresponding path program 2 times [2021-03-11 14:33:55,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:55,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257700411] [2021-03-11 14:33:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:55,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:55,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:55,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:55,942 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:55,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:55,968 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:33:55,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:33:55,985 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:55,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:56,006 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:56,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:56,024 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 14:33:56,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257700411] [2021-03-11 14:33:56,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:56,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:56,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910191449] [2021-03-11 14:33:56,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:56,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:56,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:56,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:56,026 INFO L87 Difference]: Start difference. First operand 169 states and 473 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:56,087 INFO L93 Difference]: Finished difference Result 293 states and 730 transitions. [2021-03-11 14:33:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:56,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:56,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:56,089 INFO L225 Difference]: With dead ends: 293 [2021-03-11 14:33:56,089 INFO L226 Difference]: Without dead ends: 268 [2021-03-11 14:33:56,090 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-03-11 14:33:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 162. [2021-03-11 14:33:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.8260869565217392) internal successors, (455), 161 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 455 transitions. [2021-03-11 14:33:56,096 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 455 transitions. Word has length 16 [2021-03-11 14:33:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:56,096 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 455 transitions. [2021-03-11 14:33:56,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,096 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 455 transitions. [2021-03-11 14:33:56,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:56,097 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:56,097 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:56,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 14:33:56,097 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:56,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:56,098 INFO L82 PathProgramCache]: Analyzing trace with hash 709485070, now seen corresponding path program 3 times [2021-03-11 14:33:56,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:56,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570393794] [2021-03-11 14:33:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:56,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:56,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:56,129 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:56,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:56,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:56,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:56,166 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:33:56,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:33:56,187 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:56,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:56,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570393794] [2021-03-11 14:33:56,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:56,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:56,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911101148] [2021-03-11 14:33:56,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:56,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:56,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:56,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:56,209 INFO L87 Difference]: Start difference. First operand 162 states and 455 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:56,298 INFO L93 Difference]: Finished difference Result 306 states and 774 transitions. [2021-03-11 14:33:56,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:56,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:56,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:56,300 INFO L225 Difference]: With dead ends: 306 [2021-03-11 14:33:56,300 INFO L226 Difference]: Without dead ends: 280 [2021-03-11 14:33:56,300 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:56,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-03-11 14:33:56,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 171. [2021-03-11 14:33:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8) internal successors, (476), 170 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 476 transitions. [2021-03-11 14:33:56,307 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 476 transitions. Word has length 16 [2021-03-11 14:33:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:56,307 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 476 transitions. [2021-03-11 14:33:56,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 476 transitions. [2021-03-11 14:33:56,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:56,308 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:56,308 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:56,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 14:33:56,308 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:56,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:56,309 INFO L82 PathProgramCache]: Analyzing trace with hash 326478520, now seen corresponding path program 1 times [2021-03-11 14:33:56,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:56,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968874074] [2021-03-11 14:33:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:56,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:56,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:33:56,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:56,335 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 14:33:56,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968874074] [2021-03-11 14:33:56,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:56,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:33:56,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498162886] [2021-03-11 14:33:56,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:33:56,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:56,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:33:56,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:33:56,359 INFO L87 Difference]: Start difference. First operand 171 states and 476 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:56,364 INFO L93 Difference]: Finished difference Result 123 states and 322 transitions. [2021-03-11 14:33:56,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:33:56,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:56,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:56,365 INFO L225 Difference]: With dead ends: 123 [2021-03-11 14:33:56,365 INFO L226 Difference]: Without dead ends: 123 [2021-03-11 14:33:56,365 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:33:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-03-11 14:33:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-03-11 14:33:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.639344262295082) internal successors, (322), 122 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 322 transitions. [2021-03-11 14:33:56,369 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 322 transitions. Word has length 16 [2021-03-11 14:33:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:56,369 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 322 transitions. [2021-03-11 14:33:56,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 322 transitions. [2021-03-11 14:33:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:56,370 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:56,370 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:56,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 14:33:56,370 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:56,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:56,371 INFO L82 PathProgramCache]: Analyzing trace with hash 837663250, now seen corresponding path program 4 times [2021-03-11 14:33:56,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:56,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657056065] [2021-03-11 14:33:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:56,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:56,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:56,409 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:56,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:56,420 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:56,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:56,436 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:56,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:56,456 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:56,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:56,471 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 14:33:56,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657056065] [2021-03-11 14:33:56,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:56,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:56,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500645428] [2021-03-11 14:33:56,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:56,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:56,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:56,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:56,473 INFO L87 Difference]: Start difference. First operand 123 states and 322 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:56,532 INFO L93 Difference]: Finished difference Result 201 states and 457 transitions. [2021-03-11 14:33:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:56,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:56,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:56,533 INFO L225 Difference]: With dead ends: 201 [2021-03-11 14:33:56,533 INFO L226 Difference]: Without dead ends: 185 [2021-03-11 14:33:56,534 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-03-11 14:33:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 118. [2021-03-11 14:33:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.6324786324786325) internal successors, (308), 117 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 308 transitions. [2021-03-11 14:33:56,539 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 308 transitions. Word has length 16 [2021-03-11 14:33:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:56,540 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 308 transitions. [2021-03-11 14:33:56,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 308 transitions. [2021-03-11 14:33:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:56,541 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:56,541 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:56,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 14:33:56,542 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1810159656, now seen corresponding path program 5 times [2021-03-11 14:33:56,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:56,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583948736] [2021-03-11 14:33:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:56,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:56,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:56,602 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:56,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:56,611 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:56,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:56,629 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:56,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:56,655 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:56,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:56,673 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 14:33:56,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583948736] [2021-03-11 14:33:56,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:56,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:56,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445300039] [2021-03-11 14:33:56,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:56,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:56,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:56,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:56,681 INFO L87 Difference]: Start difference. First operand 118 states and 308 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:56,738 INFO L93 Difference]: Finished difference Result 199 states and 454 transitions. [2021-03-11 14:33:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:56,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:56,739 INFO L225 Difference]: With dead ends: 199 [2021-03-11 14:33:56,739 INFO L226 Difference]: Without dead ends: 187 [2021-03-11 14:33:56,740 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-03-11 14:33:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 122. [2021-03-11 14:33:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.6115702479338845) internal successors, (316), 121 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 316 transitions. [2021-03-11 14:33:56,745 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 316 transitions. Word has length 16 [2021-03-11 14:33:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:56,745 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 316 transitions. [2021-03-11 14:33:56,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 316 transitions. [2021-03-11 14:33:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:56,746 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:56,746 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:56,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 14:33:56,746 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:56,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1739554986, now seen corresponding path program 6 times [2021-03-11 14:33:56,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:56,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036283948] [2021-03-11 14:33:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:56,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:56,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:56,795 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:56,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:56,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:56,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:56,822 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:56,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:56,847 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:56,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:56,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036283948] [2021-03-11 14:33:56,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:56,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:56,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656865089] [2021-03-11 14:33:56,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:56,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:56,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:56,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:56,875 INFO L87 Difference]: Start difference. First operand 122 states and 316 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:56,937 INFO L93 Difference]: Finished difference Result 198 states and 448 transitions. [2021-03-11 14:33:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:56,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:56,940 INFO L225 Difference]: With dead ends: 198 [2021-03-11 14:33:56,940 INFO L226 Difference]: Without dead ends: 176 [2021-03-11 14:33:56,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:56,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-03-11 14:33:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 111. [2021-03-11 14:33:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.6545454545454548) internal successors, (292), 110 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 292 transitions. [2021-03-11 14:33:56,945 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 292 transitions. Word has length 16 [2021-03-11 14:33:56,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:56,946 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 292 transitions. [2021-03-11 14:33:56,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 292 transitions. [2021-03-11 14:33:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:56,946 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:56,946 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:56,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 14:33:56,947 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:56,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1077673022, now seen corresponding path program 7 times [2021-03-11 14:33:56,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:56,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480456787] [2021-03-11 14:33:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:56,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:56,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:56,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:57,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:57,008 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:33:57,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:33:57,022 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:33:57,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:33:57,043 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:57,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:57,065 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 14:33:57,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480456787] [2021-03-11 14:33:57,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:57,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:57,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006274569] [2021-03-11 14:33:57,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:57,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:57,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:57,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:57,066 INFO L87 Difference]: Start difference. First operand 111 states and 292 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:57,105 INFO L93 Difference]: Finished difference Result 198 states and 445 transitions. [2021-03-11 14:33:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:57,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:57,107 INFO L225 Difference]: With dead ends: 198 [2021-03-11 14:33:57,107 INFO L226 Difference]: Without dead ends: 184 [2021-03-11 14:33:57,107 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-03-11 14:33:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 122. [2021-03-11 14:33:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.6115702479338845) internal successors, (316), 121 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 316 transitions. [2021-03-11 14:33:57,111 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 316 transitions. Word has length 16 [2021-03-11 14:33:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:57,113 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 316 transitions. [2021-03-11 14:33:57,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 316 transitions. [2021-03-11 14:33:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:57,115 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:57,115 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:57,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 14:33:57,115 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1075510772, now seen corresponding path program 8 times [2021-03-11 14:33:57,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:57,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42798292] [2021-03-11 14:33:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:57,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:57,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:57,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:57,161 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:33:57,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:33:57,173 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:57,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:57,191 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:57,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:57,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42798292] [2021-03-11 14:33:57,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:57,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:57,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779335023] [2021-03-11 14:33:57,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:57,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:57,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:57,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:57,209 INFO L87 Difference]: Start difference. First operand 122 states and 316 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:57,259 INFO L93 Difference]: Finished difference Result 196 states and 436 transitions. [2021-03-11 14:33:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:57,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:57,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:57,260 INFO L225 Difference]: With dead ends: 196 [2021-03-11 14:33:57,260 INFO L226 Difference]: Without dead ends: 177 [2021-03-11 14:33:57,261 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-03-11 14:33:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 115. [2021-03-11 14:33:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 2.6315789473684212) internal successors, (300), 114 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 300 transitions. [2021-03-11 14:33:57,266 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 300 transitions. Word has length 16 [2021-03-11 14:33:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:57,266 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 300 transitions. [2021-03-11 14:33:57,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,266 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 300 transitions. [2021-03-11 14:33:57,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:57,267 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:57,267 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:57,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 14:33:57,267 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:57,267 INFO L82 PathProgramCache]: Analyzing trace with hash 752802830, now seen corresponding path program 9 times [2021-03-11 14:33:57,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:57,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852564368] [2021-03-11 14:33:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:57,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:57,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:57,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:57,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:33:57,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:33:57,325 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:33:57,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:33:57,345 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:57,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:57,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852564368] [2021-03-11 14:33:57,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:57,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:57,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175957266] [2021-03-11 14:33:57,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:57,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:57,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:57,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:57,364 INFO L87 Difference]: Start difference. First operand 115 states and 300 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:57,400 INFO L93 Difference]: Finished difference Result 191 states and 423 transitions. [2021-03-11 14:33:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:57,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:57,402 INFO L225 Difference]: With dead ends: 191 [2021-03-11 14:33:57,402 INFO L226 Difference]: Without dead ends: 177 [2021-03-11 14:33:57,402 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-03-11 14:33:57,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 118. [2021-03-11 14:33:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.5982905982905984) internal successors, (304), 117 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 304 transitions. [2021-03-11 14:33:57,406 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 304 transitions. Word has length 16 [2021-03-11 14:33:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:57,406 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 304 transitions. [2021-03-11 14:33:57,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 304 transitions. [2021-03-11 14:33:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:57,407 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:57,407 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:57,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 14:33:57,407 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:57,407 INFO L82 PathProgramCache]: Analyzing trace with hash -394072616, now seen corresponding path program 10 times [2021-03-11 14:33:57,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:57,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448993593] [2021-03-11 14:33:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:57,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:57,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:57,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:57,445 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:33:57,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:33:57,464 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:57,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:57,480 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:57,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:57,496 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 14:33:57,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448993593] [2021-03-11 14:33:57,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:57,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:57,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877072043] [2021-03-11 14:33:57,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:57,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:57,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:57,498 INFO L87 Difference]: Start difference. First operand 118 states and 304 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:57,547 INFO L93 Difference]: Finished difference Result 186 states and 410 transitions. [2021-03-11 14:33:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:57,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:57,549 INFO L225 Difference]: With dead ends: 186 [2021-03-11 14:33:57,549 INFO L226 Difference]: Without dead ends: 174 [2021-03-11 14:33:57,549 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-03-11 14:33:57,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 115. [2021-03-11 14:33:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 2.6052631578947367) internal successors, (297), 114 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 297 transitions. [2021-03-11 14:33:57,554 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 297 transitions. Word has length 16 [2021-03-11 14:33:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:57,554 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 297 transitions. [2021-03-11 14:33:57,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 297 transitions. [2021-03-11 14:33:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:57,555 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:57,555 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:57,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 14:33:57,555 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:57,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:57,555 INFO L82 PathProgramCache]: Analyzing trace with hash -56228588, now seen corresponding path program 11 times [2021-03-11 14:33:57,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:57,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751898721] [2021-03-11 14:33:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:57,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:57,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:57,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:57,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:33:57,599 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:57,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:57,620 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:57,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:57,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751898721] [2021-03-11 14:33:57,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:57,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:57,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623875327] [2021-03-11 14:33:57,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:57,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:57,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:57,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:57,638 INFO L87 Difference]: Start difference. First operand 115 states and 297 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:57,691 INFO L93 Difference]: Finished difference Result 186 states and 412 transitions. [2021-03-11 14:33:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:57,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:57,692 INFO L225 Difference]: With dead ends: 186 [2021-03-11 14:33:57,692 INFO L226 Difference]: Without dead ends: 174 [2021-03-11 14:33:57,693 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-03-11 14:33:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 117. [2021-03-11 14:33:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.586206896551724) internal successors, (300), 116 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 300 transitions. [2021-03-11 14:33:57,696 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 300 transitions. Word has length 16 [2021-03-11 14:33:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:57,696 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 300 transitions. [2021-03-11 14:33:57,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 300 transitions. [2021-03-11 14:33:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:57,697 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:57,697 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:57,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 14:33:57,697 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:57,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:57,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1316540692, now seen corresponding path program 12 times [2021-03-11 14:33:57,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:57,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373143297] [2021-03-11 14:33:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:57,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:57,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:57,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:57,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:33:57,736 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:57,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:57,753 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:57,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:57,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373143297] [2021-03-11 14:33:57,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:57,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:57,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513717986] [2021-03-11 14:33:57,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:57,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:57,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:57,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:57,770 INFO L87 Difference]: Start difference. First operand 117 states and 300 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:57,820 INFO L93 Difference]: Finished difference Result 183 states and 403 transitions. [2021-03-11 14:33:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:57,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:57,821 INFO L225 Difference]: With dead ends: 183 [2021-03-11 14:33:57,821 INFO L226 Difference]: Without dead ends: 168 [2021-03-11 14:33:57,823 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-03-11 14:33:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 111. [2021-03-11 14:33:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.618181818181818) internal successors, (288), 110 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 288 transitions. [2021-03-11 14:33:57,826 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 288 transitions. Word has length 16 [2021-03-11 14:33:57,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:57,826 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 288 transitions. [2021-03-11 14:33:57,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 288 transitions. [2021-03-11 14:33:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:57,829 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:57,829 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:57,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 14:33:57,829 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash 117636068, now seen corresponding path program 13 times [2021-03-11 14:33:57,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:57,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956718811] [2021-03-11 14:33:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:57,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:57,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:57,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:57,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:57,871 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:33:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:33:57,893 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:33:57,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:33:57,914 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:57,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:57,931 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 14:33:57,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956718811] [2021-03-11 14:33:57,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:57,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:57,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031021360] [2021-03-11 14:33:57,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:57,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:57,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:57,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:57,935 INFO L87 Difference]: Start difference. First operand 111 states and 288 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:57,973 INFO L93 Difference]: Finished difference Result 187 states and 415 transitions. [2021-03-11 14:33:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:57,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:57,974 INFO L225 Difference]: With dead ends: 187 [2021-03-11 14:33:57,975 INFO L226 Difference]: Without dead ends: 173 [2021-03-11 14:33:57,975 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-03-11 14:33:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 117. [2021-03-11 14:33:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.603448275862069) internal successors, (302), 116 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 302 transitions. [2021-03-11 14:33:57,980 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 302 transitions. Word has length 16 [2021-03-11 14:33:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:57,980 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 302 transitions. [2021-03-11 14:33:57,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:57,980 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 302 transitions. [2021-03-11 14:33:57,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:57,981 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:57,981 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:57,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 14:33:57,981 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:57,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1029239378, now seen corresponding path program 14 times [2021-03-11 14:33:57,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:57,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097014866] [2021-03-11 14:33:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:57,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:58,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:58,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:58,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:33:58,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:33:58,042 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:58,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:58,059 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:58,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:58,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097014866] [2021-03-11 14:33:58,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:58,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:58,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600543142] [2021-03-11 14:33:58,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:58,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:58,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:58,078 INFO L87 Difference]: Start difference. First operand 117 states and 302 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:58,128 INFO L93 Difference]: Finished difference Result 182 states and 402 transitions. [2021-03-11 14:33:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:58,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:58,130 INFO L225 Difference]: With dead ends: 182 [2021-03-11 14:33:58,130 INFO L226 Difference]: Without dead ends: 170 [2021-03-11 14:33:58,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:58,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-03-11 14:33:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 114. [2021-03-11 14:33:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.6106194690265485) internal successors, (295), 113 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 295 transitions. [2021-03-11 14:33:58,137 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 295 transitions. Word has length 16 [2021-03-11 14:33:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:58,137 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 295 transitions. [2021-03-11 14:33:58,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 295 transitions. [2021-03-11 14:33:58,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:58,138 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:58,138 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:58,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 14:33:58,138 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:58,139 INFO L82 PathProgramCache]: Analyzing trace with hash 972942722, now seen corresponding path program 15 times [2021-03-11 14:33:58,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:58,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087357502] [2021-03-11 14:33:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:58,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:58,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:58,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:58,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:58,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:58,194 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:33:58,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:33:58,212 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:58,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:58,228 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 14:33:58,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087357502] [2021-03-11 14:33:58,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:58,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:58,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107299179] [2021-03-11 14:33:58,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:58,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:58,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:58,231 INFO L87 Difference]: Start difference. First operand 114 states and 295 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:58,266 INFO L93 Difference]: Finished difference Result 191 states and 424 transitions. [2021-03-11 14:33:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:58,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:58,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:58,268 INFO L225 Difference]: With dead ends: 191 [2021-03-11 14:33:58,268 INFO L226 Difference]: Without dead ends: 177 [2021-03-11 14:33:58,268 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-03-11 14:33:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 119. [2021-03-11 14:33:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 2.5762711864406778) internal successors, (304), 118 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 304 transitions. [2021-03-11 14:33:58,272 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 304 transitions. Word has length 16 [2021-03-11 14:33:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:58,272 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 304 transitions. [2021-03-11 14:33:58,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 304 transitions. [2021-03-11 14:33:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:58,273 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:58,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:58,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 14:33:58,273 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:58,273 INFO L82 PathProgramCache]: Analyzing trace with hash 244030310, now seen corresponding path program 16 times [2021-03-11 14:33:58,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:58,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621134902] [2021-03-11 14:33:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:58,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:58,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:58,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:58,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:58,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:58,317 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:58,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:58,335 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:58,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:58,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621134902] [2021-03-11 14:33:58,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:58,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:58,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701151869] [2021-03-11 14:33:58,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:58,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:58,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:58,353 INFO L87 Difference]: Start difference. First operand 119 states and 304 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:58,404 INFO L93 Difference]: Finished difference Result 188 states and 414 transitions. [2021-03-11 14:33:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:58,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:58,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:58,405 INFO L225 Difference]: With dead ends: 188 [2021-03-11 14:33:58,405 INFO L226 Difference]: Without dead ends: 172 [2021-03-11 14:33:58,405 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-03-11 14:33:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 114. [2021-03-11 14:33:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.584070796460177) internal successors, (292), 113 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 292 transitions. [2021-03-11 14:33:58,409 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 292 transitions. Word has length 16 [2021-03-11 14:33:58,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:58,409 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 292 transitions. [2021-03-11 14:33:58,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 292 transitions. [2021-03-11 14:33:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:58,410 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:58,410 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:58,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 14:33:58,410 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:58,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1902980058, now seen corresponding path program 17 times [2021-03-11 14:33:58,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:58,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575291765] [2021-03-11 14:33:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:58,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:58,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:58,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:58,434 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:58,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:58,445 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:58,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:58,461 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:58,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:58,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575291765] [2021-03-11 14:33:58,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:58,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:58,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882110603] [2021-03-11 14:33:58,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:58,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:58,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:58,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:58,477 INFO L87 Difference]: Start difference. First operand 114 states and 292 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:58,522 INFO L93 Difference]: Finished difference Result 178 states and 392 transitions. [2021-03-11 14:33:58,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:58,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:58,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:58,525 INFO L225 Difference]: With dead ends: 178 [2021-03-11 14:33:58,525 INFO L226 Difference]: Without dead ends: 169 [2021-03-11 14:33:58,525 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:58,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-03-11 14:33:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 116. [2021-03-11 14:33:58,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.5652173913043477) internal successors, (295), 115 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 295 transitions. [2021-03-11 14:33:58,529 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 295 transitions. Word has length 16 [2021-03-11 14:33:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:58,529 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 295 transitions. [2021-03-11 14:33:58,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 295 transitions. [2021-03-11 14:33:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:58,530 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:58,530 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:58,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 14:33:58,530 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:58,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1044105528, now seen corresponding path program 18 times [2021-03-11 14:33:58,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:58,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477229665] [2021-03-11 14:33:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:58,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:58,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:58,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:58,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:58,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:58,570 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:58,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:58,587 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:58,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:58,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477229665] [2021-03-11 14:33:58,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:58,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:58,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966829197] [2021-03-11 14:33:58,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:58,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:58,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:58,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:58,603 INFO L87 Difference]: Start difference. First operand 116 states and 295 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:58,651 INFO L93 Difference]: Finished difference Result 180 states and 395 transitions. [2021-03-11 14:33:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:58,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:58,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:58,652 INFO L225 Difference]: With dead ends: 180 [2021-03-11 14:33:58,652 INFO L226 Difference]: Without dead ends: 164 [2021-03-11 14:33:58,652 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-03-11 14:33:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 111. [2021-03-11 14:33:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.590909090909091) internal successors, (285), 110 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 285 transitions. [2021-03-11 14:33:58,656 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 285 transitions. Word has length 16 [2021-03-11 14:33:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:58,657 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 285 transitions. [2021-03-11 14:33:58,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 285 transitions. [2021-03-11 14:33:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:58,658 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:58,658 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:58,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 14:33:58,658 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:58,658 INFO L82 PathProgramCache]: Analyzing trace with hash 798009646, now seen corresponding path program 19 times [2021-03-11 14:33:58,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:58,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151919251] [2021-03-11 14:33:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:58,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:58,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:58,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:58,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:33:58,693 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:58,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:58,712 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:58,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:58,726 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 14:33:58,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151919251] [2021-03-11 14:33:58,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:58,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:58,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833377599] [2021-03-11 14:33:58,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:58,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:58,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:58,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:58,728 INFO L87 Difference]: Start difference. First operand 111 states and 285 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:58,785 INFO L93 Difference]: Finished difference Result 177 states and 394 transitions. [2021-03-11 14:33:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:58,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:58,786 INFO L225 Difference]: With dead ends: 177 [2021-03-11 14:33:58,786 INFO L226 Difference]: Without dead ends: 165 [2021-03-11 14:33:58,787 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-03-11 14:33:58,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 115. [2021-03-11 14:33:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 2.587719298245614) internal successors, (295), 114 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 295 transitions. [2021-03-11 14:33:58,790 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 295 transitions. Word has length 16 [2021-03-11 14:33:58,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:58,790 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 295 transitions. [2021-03-11 14:33:58,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 295 transitions. [2021-03-11 14:33:58,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:58,791 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:58,791 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:58,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 14:33:58,791 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:58,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2124188370, now seen corresponding path program 20 times [2021-03-11 14:33:58,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:58,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415344360] [2021-03-11 14:33:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:58,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:58,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:58,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:58,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:33:58,829 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:58,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:58,850 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:58,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:58,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415344360] [2021-03-11 14:33:58,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:58,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:58,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314665544] [2021-03-11 14:33:58,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:58,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:58,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:58,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:58,867 INFO L87 Difference]: Start difference. First operand 115 states and 295 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:58,909 INFO L93 Difference]: Finished difference Result 174 states and 385 transitions. [2021-03-11 14:33:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:58,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:58,910 INFO L225 Difference]: With dead ends: 174 [2021-03-11 14:33:58,910 INFO L226 Difference]: Without dead ends: 163 [2021-03-11 14:33:58,910 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-03-11 14:33:58,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 113. [2021-03-11 14:33:58,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 2.5892857142857144) internal successors, (290), 112 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 290 transitions. [2021-03-11 14:33:58,913 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 290 transitions. Word has length 16 [2021-03-11 14:33:58,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:58,913 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 290 transitions. [2021-03-11 14:33:58,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 290 transitions. [2021-03-11 14:33:58,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:58,914 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:58,914 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:58,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 14:33:58,915 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:58,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1653316300, now seen corresponding path program 21 times [2021-03-11 14:33:58,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:58,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644311701] [2021-03-11 14:33:58,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:58,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:58,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:58,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:58,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:58,938 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:58,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:58,949 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:58,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:58,964 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:58,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:58,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644311701] [2021-03-11 14:33:58,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:58,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:58,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045114268] [2021-03-11 14:33:58,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:58,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:58,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:58,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:58,980 INFO L87 Difference]: Start difference. First operand 113 states and 290 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:59,027 INFO L93 Difference]: Finished difference Result 181 states and 404 transitions. [2021-03-11 14:33:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:59,028 INFO L225 Difference]: With dead ends: 181 [2021-03-11 14:33:59,028 INFO L226 Difference]: Without dead ends: 169 [2021-03-11 14:33:59,028 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-03-11 14:33:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 117. [2021-03-11 14:33:59,031 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 14:33:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 298 transitions. [2021-03-11 14:33:59,031 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 298 transitions. Word has length 16 [2021-03-11 14:33:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:59,032 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 298 transitions. [2021-03-11 14:33:59,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 298 transitions. [2021-03-11 14:33:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:59,032 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:59,032 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:59,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 14:33:59,032 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:59,033 INFO L82 PathProgramCache]: Analyzing trace with hash 866830378, now seen corresponding path program 22 times [2021-03-11 14:33:59,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:59,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268758342] [2021-03-11 14:33:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:59,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:59,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:59,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:59,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:59,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:59,074 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:59,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:59,089 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:59,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:59,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268758342] [2021-03-11 14:33:59,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:59,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:59,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462994116] [2021-03-11 14:33:59,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:59,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:59,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:59,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:59,104 INFO L87 Difference]: Start difference. First operand 117 states and 298 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:59,154 INFO L93 Difference]: Finished difference Result 180 states and 398 transitions. [2021-03-11 14:33:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:59,155 INFO L225 Difference]: With dead ends: 180 [2021-03-11 14:33:59,155 INFO L226 Difference]: Without dead ends: 165 [2021-03-11 14:33:59,155 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:59,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-03-11 14:33:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 113. [2021-03-11 14:33:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 2.5714285714285716) internal successors, (288), 112 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 288 transitions. [2021-03-11 14:33:59,158 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 288 transitions. Word has length 16 [2021-03-11 14:33:59,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:59,158 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 288 transitions. [2021-03-11 14:33:59,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,159 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 288 transitions. [2021-03-11 14:33:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:59,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:59,159 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:59,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 14:33:59,159 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:59,160 INFO L82 PathProgramCache]: Analyzing trace with hash -413575062, now seen corresponding path program 23 times [2021-03-11 14:33:59,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:59,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180180163] [2021-03-11 14:33:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:59,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:59,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:59,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:59,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:59,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:59,189 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:59,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:59,203 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:59,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:59,218 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 14:33:59,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180180163] [2021-03-11 14:33:59,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:59,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:59,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324016849] [2021-03-11 14:33:59,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:59,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:59,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:59,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:59,219 INFO L87 Difference]: Start difference. First operand 113 states and 288 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:59,260 INFO L93 Difference]: Finished difference Result 173 states and 381 transitions. [2021-03-11 14:33:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:59,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:59,261 INFO L225 Difference]: With dead ends: 173 [2021-03-11 14:33:59,261 INFO L226 Difference]: Without dead ends: 164 [2021-03-11 14:33:59,261 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-03-11 14:33:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 115. [2021-03-11 14:33:59,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 2.5526315789473686) internal successors, (291), 114 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 291 transitions. [2021-03-11 14:33:59,270 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 291 transitions. Word has length 16 [2021-03-11 14:33:59,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:59,270 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 291 transitions. [2021-03-11 14:33:59,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 291 transitions. [2021-03-11 14:33:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:59,271 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:59,271 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:59,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 14:33:59,271 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:59,272 INFO L82 PathProgramCache]: Analyzing trace with hash 445299468, now seen corresponding path program 24 times [2021-03-11 14:33:59,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:59,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530260762] [2021-03-11 14:33:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:59,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:59,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:59,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:33:59,297 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:59,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:59,306 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:59,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:59,321 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:59,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:59,334 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 14:33:59,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530260762] [2021-03-11 14:33:59,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:59,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:59,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523550445] [2021-03-11 14:33:59,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:59,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:59,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:59,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:59,335 INFO L87 Difference]: Start difference. First operand 115 states and 291 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:59,379 INFO L93 Difference]: Finished difference Result 175 states and 384 transitions. [2021-03-11 14:33:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:59,380 INFO L225 Difference]: With dead ends: 175 [2021-03-11 14:33:59,380 INFO L226 Difference]: Without dead ends: 154 [2021-03-11 14:33:59,380 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-03-11 14:33:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 105. [2021-03-11 14:33:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.625) internal successors, (273), 104 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 273 transitions. [2021-03-11 14:33:59,383 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 273 transitions. Word has length 16 [2021-03-11 14:33:59,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:59,383 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 273 transitions. [2021-03-11 14:33:59,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 273 transitions. [2021-03-11 14:33:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:59,384 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:59,385 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:59,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 14:33:59,385 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash 14185884, now seen corresponding path program 25 times [2021-03-11 14:33:59,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:59,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531662091] [2021-03-11 14:33:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:59,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:59,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:59,409 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:59,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:59,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:33:59,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:33:59,427 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:33:59,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:33:59,441 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:59,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:59,454 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 14:33:59,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531662091] [2021-03-11 14:33:59,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:59,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:59,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802130839] [2021-03-11 14:33:59,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:59,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:59,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:59,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:59,455 INFO L87 Difference]: Start difference. First operand 105 states and 273 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:59,503 INFO L93 Difference]: Finished difference Result 194 states and 433 transitions. [2021-03-11 14:33:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:59,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:59,504 INFO L225 Difference]: With dead ends: 194 [2021-03-11 14:33:59,504 INFO L226 Difference]: Without dead ends: 180 [2021-03-11 14:33:59,504 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:59,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-03-11 14:33:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 112. [2021-03-11 14:33:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5675675675675675) internal successors, (285), 111 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 285 transitions. [2021-03-11 14:33:59,508 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 285 transitions. Word has length 16 [2021-03-11 14:33:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:59,509 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 285 transitions. [2021-03-11 14:33:59,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 285 transitions. [2021-03-11 14:33:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:59,509 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:59,509 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:59,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 14:33:59,509 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash 16348134, now seen corresponding path program 26 times [2021-03-11 14:33:59,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:59,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106563815] [2021-03-11 14:33:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:59,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:59,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:59,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:59,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:59,539 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:33:59,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:33:59,550 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:59,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:59,564 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:59,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:59,579 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 14:33:59,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106563815] [2021-03-11 14:33:59,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:59,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:59,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839420259] [2021-03-11 14:33:59,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:59,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:59,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:59,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:59,580 INFO L87 Difference]: Start difference. First operand 112 states and 285 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:59,628 INFO L93 Difference]: Finished difference Result 192 states and 424 transitions. [2021-03-11 14:33:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:59,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:59,629 INFO L225 Difference]: With dead ends: 192 [2021-03-11 14:33:59,629 INFO L226 Difference]: Without dead ends: 173 [2021-03-11 14:33:59,630 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-03-11 14:33:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 105. [2021-03-11 14:33:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.5673076923076925) internal successors, (267), 104 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 267 transitions. [2021-03-11 14:33:59,634 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 267 transitions. Word has length 16 [2021-03-11 14:33:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:59,634 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 267 transitions. [2021-03-11 14:33:59,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 267 transitions. [2021-03-11 14:33:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:59,634 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:59,634 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:59,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 14:33:59,634 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:59,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:59,635 INFO L82 PathProgramCache]: Analyzing trace with hash 87465516, now seen corresponding path program 27 times [2021-03-11 14:33:59,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:59,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456281022] [2021-03-11 14:33:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:59,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:59,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:59,651 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:59,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:59,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:59,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:59,672 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:33:59,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:33:59,688 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:59,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:59,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456281022] [2021-03-11 14:33:59,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:59,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:59,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443420952] [2021-03-11 14:33:59,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:59,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:59,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:59,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:59,703 INFO L87 Difference]: Start difference. First operand 105 states and 267 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:59,739 INFO L93 Difference]: Finished difference Result 191 states and 421 transitions. [2021-03-11 14:33:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:59,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:59,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:59,740 INFO L225 Difference]: With dead ends: 191 [2021-03-11 14:33:59,740 INFO L226 Difference]: Without dead ends: 177 [2021-03-11 14:33:59,742 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-03-11 14:33:59,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 110. [2021-03-11 14:33:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.532110091743119) internal successors, (276), 109 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 276 transitions. [2021-03-11 14:33:59,745 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 276 transitions. Word has length 16 [2021-03-11 14:33:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:59,745 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 276 transitions. [2021-03-11 14:33:59,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 276 transitions. [2021-03-11 14:33:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:59,746 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:59,746 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:59,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 14:33:59,746 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:59,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash 215643696, now seen corresponding path program 28 times [2021-03-11 14:33:59,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:59,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190139702] [2021-03-11 14:33:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:59,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:59,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:59,764 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:59,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:59,771 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:59,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:59,781 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:59,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:59,795 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:59,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:33:59,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190139702] [2021-03-11 14:33:59,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:59,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:59,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630206739] [2021-03-11 14:33:59,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:59,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:59,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:59,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:59,811 INFO L87 Difference]: Start difference. First operand 110 states and 276 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:59,862 INFO L93 Difference]: Finished difference Result 188 states and 411 transitions. [2021-03-11 14:33:59,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:59,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:59,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:59,863 INFO L225 Difference]: With dead ends: 188 [2021-03-11 14:33:59,863 INFO L226 Difference]: Without dead ends: 172 [2021-03-11 14:33:59,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:59,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-03-11 14:33:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 105. [2021-03-11 14:33:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.519230769230769) internal successors, (262), 104 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 262 transitions. [2021-03-11 14:33:59,866 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 262 transitions. Word has length 16 [2021-03-11 14:33:59,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:59,866 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 262 transitions. [2021-03-11 14:33:59,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 262 transitions. [2021-03-11 14:33:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:59,867 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:59,867 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:59,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 14:33:59,867 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:59,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1862788086, now seen corresponding path program 29 times [2021-03-11 14:33:59,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:59,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2391639] [2021-03-11 14:33:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:33:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:33:59,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:33:59,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:33:59,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:33:59,881 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:33:59,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:33:59,888 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:33:59,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:33:59,898 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:33:59,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:33:59,912 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:33:59,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:33:59,925 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 14:33:59,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2391639] [2021-03-11 14:33:59,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:33:59,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:33:59,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821862363] [2021-03-11 14:33:59,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:33:59,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:33:59,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:33:59,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:33:59,926 INFO L87 Difference]: Start difference. First operand 105 states and 262 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:33:59,985 INFO L93 Difference]: Finished difference Result 186 states and 408 transitions. [2021-03-11 14:33:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:33:59,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:33:59,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:33:59,987 INFO L225 Difference]: With dead ends: 186 [2021-03-11 14:33:59,987 INFO L226 Difference]: Without dead ends: 174 [2021-03-11 14:33:59,987 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:33:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-03-11 14:33:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 109. [2021-03-11 14:33:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.5) internal successors, (270), 108 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 270 transitions. [2021-03-11 14:33:59,994 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 270 transitions. Word has length 16 [2021-03-11 14:33:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:33:59,994 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 270 transitions. [2021-03-11 14:33:59,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:33:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 270 transitions. [2021-03-11 14:33:59,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:33:59,995 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:33:59,995 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:33:59,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 14:33:59,995 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:33:59,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:33:59,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1933392756, now seen corresponding path program 30 times [2021-03-11 14:33:59,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:33:59,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516102148] [2021-03-11 14:33:59,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:00,013 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:00,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:00,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:00,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:00,031 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:00,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:00,050 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:00,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:00,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516102148] [2021-03-11 14:34:00,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:00,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:00,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719952983] [2021-03-11 14:34:00,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:00,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:00,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:00,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:00,064 INFO L87 Difference]: Start difference. First operand 109 states and 270 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:00,111 INFO L93 Difference]: Finished difference Result 185 states and 402 transitions. [2021-03-11 14:34:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:00,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:00,112 INFO L225 Difference]: With dead ends: 185 [2021-03-11 14:34:00,112 INFO L226 Difference]: Without dead ends: 163 [2021-03-11 14:34:00,113 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-03-11 14:34:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 98. [2021-03-11 14:34:00,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.536082474226804) internal successors, (246), 97 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 14:34:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 246 transitions. [2021-03-11 14:34:00,116 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 246 transitions. Word has length 16 [2021-03-11 14:34:00,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:00,116 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 246 transitions. [2021-03-11 14:34:00,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,116 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 246 transitions. [2021-03-11 14:34:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:00,116 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:00,116 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:00,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 14:34:00,116 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash 876048608, now seen corresponding path program 31 times [2021-03-11 14:34:00,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:00,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388041203] [2021-03-11 14:34:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:00,130 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:00,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:00,142 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:00,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:00,153 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:00,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:00,168 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:00,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:00,183 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 14:34:00,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388041203] [2021-03-11 14:34:00,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:00,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:00,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394720438] [2021-03-11 14:34:00,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:00,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:00,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:00,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:00,184 INFO L87 Difference]: Start difference. First operand 98 states and 246 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:00,225 INFO L93 Difference]: Finished difference Result 178 states and 381 transitions. [2021-03-11 14:34:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:00,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:00,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:00,226 INFO L225 Difference]: With dead ends: 178 [2021-03-11 14:34:00,226 INFO L226 Difference]: Without dead ends: 164 [2021-03-11 14:34:00,227 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-03-11 14:34:00,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 109. [2021-03-11 14:34:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.5) internal successors, (270), 108 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 270 transitions. [2021-03-11 14:34:00,230 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 270 transitions. Word has length 16 [2021-03-11 14:34:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:00,230 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 270 transitions. [2021-03-11 14:34:00,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 270 transitions. [2021-03-11 14:34:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:00,231 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:00,231 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:00,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 14:34:00,231 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:00,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:00,232 INFO L82 PathProgramCache]: Analyzing trace with hash 878210858, now seen corresponding path program 32 times [2021-03-11 14:34:00,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:00,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529002579] [2021-03-11 14:34:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:00,245 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:00,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:00,257 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:00,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:00,268 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:00,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:00,282 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:00,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:00,295 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 14:34:00,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529002579] [2021-03-11 14:34:00,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:00,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:00,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384895524] [2021-03-11 14:34:00,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:00,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:00,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:00,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:00,297 INFO L87 Difference]: Start difference. First operand 109 states and 270 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:00,345 INFO L93 Difference]: Finished difference Result 176 states and 372 transitions. [2021-03-11 14:34:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:00,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:00,346 INFO L225 Difference]: With dead ends: 176 [2021-03-11 14:34:00,346 INFO L226 Difference]: Without dead ends: 157 [2021-03-11 14:34:00,346 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-03-11 14:34:00,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 102. [2021-03-11 14:34:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.514851485148515) internal successors, (254), 101 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 254 transitions. [2021-03-11 14:34:00,350 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 254 transitions. Word has length 16 [2021-03-11 14:34:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:00,350 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 254 transitions. [2021-03-11 14:34:00,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 254 transitions. [2021-03-11 14:34:00,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:00,350 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:00,351 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:00,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 14:34:00,351 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:00,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:00,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1182242800, now seen corresponding path program 1 times [2021-03-11 14:34:00,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:00,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690022963] [2021-03-11 14:34:00,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:34:00,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,358 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 14:34:00,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690022963] [2021-03-11 14:34:00,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:00,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:34:00,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991606938] [2021-03-11 14:34:00,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:34:00,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:00,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:34:00,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:00,359 INFO L87 Difference]: Start difference. First operand 102 states and 254 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:00,360 INFO L93 Difference]: Finished difference Result 86 states and 201 transitions. [2021-03-11 14:34:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:34:00,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:00,361 INFO L225 Difference]: With dead ends: 86 [2021-03-11 14:34:00,361 INFO L226 Difference]: Without dead ends: 86 [2021-03-11 14:34:00,361 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:34:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-03-11 14:34:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-03-11 14:34:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.364705882352941) internal successors, (201), 85 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 14:34:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 201 transitions. [2021-03-11 14:34:00,363 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 201 transitions. Word has length 16 [2021-03-11 14:34:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:00,364 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 201 transitions. [2021-03-11 14:34:00,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 201 transitions. [2021-03-11 14:34:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:00,364 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:00,364 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:00,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 14:34:00,364 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:00,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:00,365 INFO L82 PathProgramCache]: Analyzing trace with hash 175918534, now seen corresponding path program 33 times [2021-03-11 14:34:00,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:00,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961057094] [2021-03-11 14:34:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:00,378 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:00,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:00,391 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:00,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:00,406 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:00,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:00,421 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:00,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:00,438 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 14:34:00,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961057094] [2021-03-11 14:34:00,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:00,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:00,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779900773] [2021-03-11 14:34:00,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:00,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:00,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:00,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:00,439 INFO L87 Difference]: Start difference. First operand 86 states and 201 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:00,473 INFO L93 Difference]: Finished difference Result 136 states and 263 transitions. [2021-03-11 14:34:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:00,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:00,474 INFO L225 Difference]: With dead ends: 136 [2021-03-11 14:34:00,474 INFO L226 Difference]: Without dead ends: 124 [2021-03-11 14:34:00,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:00,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-03-11 14:34:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2021-03-11 14:34:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3333333333333335) internal successors, (203), 87 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 14:34:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 203 transitions. [2021-03-11 14:34:00,478 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 203 transitions. Word has length 16 [2021-03-11 14:34:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:00,479 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 203 transitions. [2021-03-11 14:34:00,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,479 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 203 transitions. [2021-03-11 14:34:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:00,479 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:00,479 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:00,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 14:34:00,479 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:00,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1606855970, now seen corresponding path program 34 times [2021-03-11 14:34:00,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:00,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913025135] [2021-03-11 14:34:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:00,512 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:00,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:00,525 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:00,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:00,540 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:00,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:00,554 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:00,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:00,569 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 14:34:00,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913025135] [2021-03-11 14:34:00,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:00,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:00,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011867522] [2021-03-11 14:34:00,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:00,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:00,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:00,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:00,571 INFO L87 Difference]: Start difference. First operand 88 states and 203 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:00,604 INFO L93 Difference]: Finished difference Result 124 states and 246 transitions. [2021-03-11 14:34:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:00,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:00,604 INFO L225 Difference]: With dead ends: 124 [2021-03-11 14:34:00,604 INFO L226 Difference]: Without dead ends: 115 [2021-03-11 14:34:00,605 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-03-11 14:34:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 86. [2021-03-11 14:34:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.3411764705882354) internal successors, (199), 85 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 199 transitions. [2021-03-11 14:34:00,606 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 199 transitions. Word has length 16 [2021-03-11 14:34:00,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:00,607 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 199 transitions. [2021-03-11 14:34:00,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 199 transitions. [2021-03-11 14:34:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:00,607 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:00,607 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:00,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 14:34:00,607 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:00,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:00,607 INFO L82 PathProgramCache]: Analyzing trace with hash 856292112, now seen corresponding path program 35 times [2021-03-11 14:34:00,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:00,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402922174] [2021-03-11 14:34:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:00,621 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:00,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:00,635 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:00,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:00,654 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:00,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:00,671 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:00,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:00,689 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 14:34:00,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402922174] [2021-03-11 14:34:00,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:00,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:00,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933548452] [2021-03-11 14:34:00,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:00,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:00,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:00,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:00,690 INFO L87 Difference]: Start difference. First operand 86 states and 199 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:00,741 INFO L93 Difference]: Finished difference Result 133 states and 256 transitions. [2021-03-11 14:34:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:00,742 INFO L225 Difference]: With dead ends: 133 [2021-03-11 14:34:00,742 INFO L226 Difference]: Without dead ends: 123 [2021-03-11 14:34:00,742 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 91.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-03-11 14:34:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 87. [2021-03-11 14:34:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.3255813953488373) internal successors, (200), 86 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 200 transitions. [2021-03-11 14:34:00,745 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 200 transitions. Word has length 16 [2021-03-11 14:34:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:00,745 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 200 transitions. [2021-03-11 14:34:00,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 200 transitions. [2021-03-11 14:34:00,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:00,745 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:00,745 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:00,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 14:34:00,746 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:00,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:00,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1198706330, now seen corresponding path program 36 times [2021-03-11 14:34:00,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:00,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24937582] [2021-03-11 14:34:00,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:00,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:00,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:00,779 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:00,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:00,798 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:00,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:00,814 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:00,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:00,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24937582] [2021-03-11 14:34:00,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:00,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:00,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065955241] [2021-03-11 14:34:00,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:00,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:00,831 INFO L87 Difference]: Start difference. First operand 87 states and 200 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:00,862 INFO L93 Difference]: Finished difference Result 123 states and 243 transitions. [2021-03-11 14:34:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:00,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:00,863 INFO L225 Difference]: With dead ends: 123 [2021-03-11 14:34:00,863 INFO L226 Difference]: Without dead ends: 112 [2021-03-11 14:34:00,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-03-11 14:34:00,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 83. [2021-03-11 14:34:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.3536585365853657) internal successors, (193), 82 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 193 transitions. [2021-03-11 14:34:00,866 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 193 transitions. Word has length 16 [2021-03-11 14:34:00,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:00,866 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 193 transitions. [2021-03-11 14:34:00,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,866 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 193 transitions. [2021-03-11 14:34:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:00,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:00,866 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:00,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 14:34:00,866 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:00,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:00,866 INFO L82 PathProgramCache]: Analyzing trace with hash 901493694, now seen corresponding path program 37 times [2021-03-11 14:34:00,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:00,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688515858] [2021-03-11 14:34:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:00,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:00,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:00,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:00,894 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:00,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:00,910 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:00,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:00,926 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 14:34:00,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688515858] [2021-03-11 14:34:00,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:00,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:00,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885290553] [2021-03-11 14:34:00,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:00,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:00,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:00,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:00,927 INFO L87 Difference]: Start difference. First operand 83 states and 193 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:00,960 INFO L93 Difference]: Finished difference Result 144 states and 279 transitions. [2021-03-11 14:34:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:00,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:00,961 INFO L225 Difference]: With dead ends: 144 [2021-03-11 14:34:00,961 INFO L226 Difference]: Without dead ends: 132 [2021-03-11 14:34:00,961 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 62.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:00,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-03-11 14:34:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 89. [2021-03-11 14:34:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.3295454545454546) internal successors, (205), 88 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 14:34:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 205 transitions. [2021-03-11 14:34:00,964 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 205 transitions. Word has length 16 [2021-03-11 14:34:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:00,964 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 205 transitions. [2021-03-11 14:34:00,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 205 transitions. [2021-03-11 14:34:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:00,965 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:00,965 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:00,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 14:34:00,965 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:00,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:00,965 INFO L82 PathProgramCache]: Analyzing trace with hash 172581282, now seen corresponding path program 38 times [2021-03-11 14:34:00,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:00,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578868150] [2021-03-11 14:34:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:00,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:00,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:00,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:00,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:00,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:00,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:00,994 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:00,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:01,008 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:01,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:01,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578868150] [2021-03-11 14:34:01,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:01,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:01,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780867584] [2021-03-11 14:34:01,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:01,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:01,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:01,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:01,023 INFO L87 Difference]: Start difference. First operand 89 states and 205 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:01,064 INFO L93 Difference]: Finished difference Result 141 states and 270 transitions. [2021-03-11 14:34:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:01,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:01,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:01,064 INFO L225 Difference]: With dead ends: 141 [2021-03-11 14:34:01,065 INFO L226 Difference]: Without dead ends: 128 [2021-03-11 14:34:01,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-03-11 14:34:01,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 85. [2021-03-11 14:34:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.3452380952380953) internal successors, (197), 84 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 14:34:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 197 transitions. [2021-03-11 14:34:01,067 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 197 transitions. Word has length 16 [2021-03-11 14:34:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:01,067 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 197 transitions. [2021-03-11 14:34:01,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,067 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 197 transitions. [2021-03-11 14:34:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:01,068 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:01,068 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:01,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 14:34:01,068 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:01,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:01,068 INFO L82 PathProgramCache]: Analyzing trace with hash -329834938, now seen corresponding path program 39 times [2021-03-11 14:34:01,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:01,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375250827] [2021-03-11 14:34:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:01,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:01,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:01,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:01,089 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:01,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:01,104 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:01,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:01,120 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:01,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:01,134 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 14:34:01,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375250827] [2021-03-11 14:34:01,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:01,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:01,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417297043] [2021-03-11 14:34:01,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:01,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:01,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:01,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:01,137 INFO L87 Difference]: Start difference. First operand 85 states and 197 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:01,167 INFO L93 Difference]: Finished difference Result 134 states and 257 transitions. [2021-03-11 14:34:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:01,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:01,168 INFO L225 Difference]: With dead ends: 134 [2021-03-11 14:34:01,168 INFO L226 Difference]: Without dead ends: 122 [2021-03-11 14:34:01,169 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-03-11 14:34:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87. [2021-03-11 14:34:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.313953488372093) internal successors, (199), 86 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 199 transitions. [2021-03-11 14:34:01,172 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 199 transitions. Word has length 16 [2021-03-11 14:34:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:01,173 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 199 transitions. [2021-03-11 14:34:01,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 199 transitions. [2021-03-11 14:34:01,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:01,173 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:01,174 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:01,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 14:34:01,174 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:01,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1101102498, now seen corresponding path program 40 times [2021-03-11 14:34:01,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:01,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213706936] [2021-03-11 14:34:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:01,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:01,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:01,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:01,204 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:01,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:01,221 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:01,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:01,236 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:01,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:01,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213706936] [2021-03-11 14:34:01,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:01,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:01,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063926337] [2021-03-11 14:34:01,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:01,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:01,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:01,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:01,251 INFO L87 Difference]: Start difference. First operand 87 states and 199 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:01,294 INFO L93 Difference]: Finished difference Result 122 states and 240 transitions. [2021-03-11 14:34:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:01,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:01,295 INFO L225 Difference]: With dead ends: 122 [2021-03-11 14:34:01,295 INFO L226 Difference]: Without dead ends: 113 [2021-03-11 14:34:01,295 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:01,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-03-11 14:34:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 85. [2021-03-11 14:34:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.3214285714285716) internal successors, (195), 84 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 14:34:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 195 transitions. [2021-03-11 14:34:01,297 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 195 transitions. Word has length 16 [2021-03-11 14:34:01,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:01,298 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 195 transitions. [2021-03-11 14:34:01,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 195 transitions. [2021-03-11 14:34:01,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:01,298 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:01,298 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:01,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 14:34:01,298 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1487233458, now seen corresponding path program 41 times [2021-03-11 14:34:01,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:01,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448514188] [2021-03-11 14:34:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:01,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:01,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:01,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:01,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:01,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:01,327 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:01,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:01,341 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:01,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:01,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448514188] [2021-03-11 14:34:01,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:01,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:01,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193829743] [2021-03-11 14:34:01,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:01,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:01,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:01,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:01,356 INFO L87 Difference]: Start difference. First operand 85 states and 195 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:01,398 INFO L93 Difference]: Finished difference Result 130 states and 248 transitions. [2021-03-11 14:34:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:01,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:01,399 INFO L225 Difference]: With dead ends: 130 [2021-03-11 14:34:01,399 INFO L226 Difference]: Without dead ends: 121 [2021-03-11 14:34:01,399 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-03-11 14:34:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 86. [2021-03-11 14:34:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 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 14:34:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 196 transitions. [2021-03-11 14:34:01,402 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 196 transitions. Word has length 16 [2021-03-11 14:34:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:01,402 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 196 transitions. [2021-03-11 14:34:01,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 196 transitions. [2021-03-11 14:34:01,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:01,402 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:01,402 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:01,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 14:34:01,402 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:01,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:01,403 INFO L82 PathProgramCache]: Analyzing trace with hash -215054806, now seen corresponding path program 42 times [2021-03-11 14:34:01,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:01,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839498936] [2021-03-11 14:34:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:01,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:01,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:01,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:01,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:01,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:01,433 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:01,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:01,450 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:01,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:01,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839498936] [2021-03-11 14:34:01,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:01,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:01,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075595431] [2021-03-11 14:34:01,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:01,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:01,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:01,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:01,465 INFO L87 Difference]: Start difference. First operand 86 states and 196 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:01,495 INFO L93 Difference]: Finished difference Result 121 states and 237 transitions. [2021-03-11 14:34:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:01,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:01,496 INFO L225 Difference]: With dead ends: 121 [2021-03-11 14:34:01,496 INFO L226 Difference]: Without dead ends: 111 [2021-03-11 14:34:01,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-03-11 14:34:01,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2021-03-11 14:34:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.3292682926829267) internal successors, (191), 82 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 191 transitions. [2021-03-11 14:34:01,499 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 191 transitions. Word has length 16 [2021-03-11 14:34:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:01,499 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 191 transitions. [2021-03-11 14:34:01,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 191 transitions. [2021-03-11 14:34:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:01,500 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:01,500 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:01,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 14:34:01,500 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:01,500 INFO L82 PathProgramCache]: Analyzing trace with hash 508781892, now seen corresponding path program 43 times [2021-03-11 14:34:01,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:01,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540186820] [2021-03-11 14:34:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:01,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:01,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:01,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:01,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:01,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:01,529 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:01,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:01,543 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:01,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:01,558 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 14:34:01,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540186820] [2021-03-11 14:34:01,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:01,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:01,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982669770] [2021-03-11 14:34:01,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:01,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:01,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:01,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:01,559 INFO L87 Difference]: Start difference. First operand 83 states and 191 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:01,608 INFO L93 Difference]: Finished difference Result 135 states and 261 transitions. [2021-03-11 14:34:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:01,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:01,609 INFO L225 Difference]: With dead ends: 135 [2021-03-11 14:34:01,609 INFO L226 Difference]: Without dead ends: 125 [2021-03-11 14:34:01,610 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-03-11 14:34:01,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 87. [2021-03-11 14:34:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.313953488372093) internal successors, (199), 86 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 199 transitions. [2021-03-11 14:34:01,612 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 199 transitions. Word has length 16 [2021-03-11 14:34:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:01,612 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 199 transitions. [2021-03-11 14:34:01,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 199 transitions. [2021-03-11 14:34:01,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:01,613 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:01,613 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:01,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 14:34:01,613 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:01,613 INFO L82 PathProgramCache]: Analyzing trace with hash -277704030, now seen corresponding path program 44 times [2021-03-11 14:34:01,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:01,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532359786] [2021-03-11 14:34:01,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:01,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:01,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:01,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:01,631 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:01,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:01,641 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:01,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:01,655 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:01,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:01,669 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 14:34:01,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532359786] [2021-03-11 14:34:01,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:01,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:01,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156024239] [2021-03-11 14:34:01,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:01,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:01,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:01,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:01,671 INFO L87 Difference]: Start difference. First operand 87 states and 199 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:01,713 INFO L93 Difference]: Finished difference Result 134 states and 256 transitions. [2021-03-11 14:34:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:01,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:01,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:01,714 INFO L225 Difference]: With dead ends: 134 [2021-03-11 14:34:01,714 INFO L226 Difference]: Without dead ends: 122 [2021-03-11 14:34:01,714 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-03-11 14:34:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 84. [2021-03-11 14:34:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.325301204819277) internal successors, (193), 83 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 193 transitions. [2021-03-11 14:34:01,716 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 193 transitions. Word has length 16 [2021-03-11 14:34:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:01,717 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 193 transitions. [2021-03-11 14:34:01,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 193 transitions. [2021-03-11 14:34:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:01,717 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:01,717 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:01,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 14:34:01,717 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:01,717 INFO L82 PathProgramCache]: Analyzing trace with hash -722546740, now seen corresponding path program 45 times [2021-03-11 14:34:01,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:01,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212165620] [2021-03-11 14:34:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:01,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:01,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:01,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:01,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:01,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:01,762 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:01,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:01,776 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:01,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:01,790 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 14:34:01,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212165620] [2021-03-11 14:34:01,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:01,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:01,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069191071] [2021-03-11 14:34:01,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:01,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:01,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:01,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:01,791 INFO L87 Difference]: Start difference. First operand 84 states and 193 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:01,838 INFO L93 Difference]: Finished difference Result 127 states and 243 transitions. [2021-03-11 14:34:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:01,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:01,839 INFO L225 Difference]: With dead ends: 127 [2021-03-11 14:34:01,839 INFO L226 Difference]: Without dead ends: 117 [2021-03-11 14:34:01,840 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-03-11 14:34:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 85. [2021-03-11 14:34:01,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.3095238095238093) internal successors, (194), 84 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 14:34:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 194 transitions. [2021-03-11 14:34:01,843 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 194 transitions. Word has length 16 [2021-03-11 14:34:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:01,843 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 194 transitions. [2021-03-11 14:34:01,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 194 transitions. [2021-03-11 14:34:01,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:01,844 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:01,844 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:01,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 14:34:01,844 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:01,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:01,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1517422114, now seen corresponding path program 46 times [2021-03-11 14:34:01,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:01,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503430749] [2021-03-11 14:34:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:01,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:01,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:01,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:01,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:01,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:01,881 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:01,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:01,901 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:01,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:01,917 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 14:34:01,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503430749] [2021-03-11 14:34:01,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:01,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:01,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608714976] [2021-03-11 14:34:01,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:01,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:01,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:01,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:01,918 INFO L87 Difference]: Start difference. First operand 85 states and 194 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:01,955 INFO L93 Difference]: Finished difference Result 117 states and 230 transitions. [2021-03-11 14:34:01,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:01,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:01,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:01,956 INFO L225 Difference]: With dead ends: 117 [2021-03-11 14:34:01,956 INFO L226 Difference]: Without dead ends: 109 [2021-03-11 14:34:01,956 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-03-11 14:34:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 84. [2021-03-11 14:34:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.3132530120481927) internal successors, (192), 83 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 14:34:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 192 transitions. [2021-03-11 14:34:01,958 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 192 transitions. Word has length 16 [2021-03-11 14:34:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:01,959 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 192 transitions. [2021-03-11 14:34:01,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 192 transitions. [2021-03-11 14:34:01,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:01,959 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:01,959 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:01,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 14:34:01,959 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:01,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:01,960 INFO L82 PathProgramCache]: Analyzing trace with hash 414148078, now seen corresponding path program 47 times [2021-03-11 14:34:01,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:01,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719259278] [2021-03-11 14:34:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:01,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:01,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:01,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:01,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:01,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:01,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:01,990 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:01,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:02,006 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:02,024 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 14:34:02,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719259278] [2021-03-11 14:34:02,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:02,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:02,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964670673] [2021-03-11 14:34:02,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:02,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:02,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:02,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:02,025 INFO L87 Difference]: Start difference. First operand 84 states and 192 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:02,074 INFO L93 Difference]: Finished difference Result 126 states and 240 transitions. [2021-03-11 14:34:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:02,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:02,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:02,075 INFO L225 Difference]: With dead ends: 126 [2021-03-11 14:34:02,075 INFO L226 Difference]: Without dead ends: 117 [2021-03-11 14:34:02,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-03-11 14:34:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 85. [2021-03-11 14:34:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.2976190476190474) internal successors, (193), 84 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 193 transitions. [2021-03-11 14:34:02,078 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 193 transitions. Word has length 16 [2021-03-11 14:34:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:02,078 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 193 transitions. [2021-03-11 14:34:02,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 193 transitions. [2021-03-11 14:34:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:02,078 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:02,078 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:02,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 14:34:02,078 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:02,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:02,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1288140186, now seen corresponding path program 48 times [2021-03-11 14:34:02,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:02,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673750490] [2021-03-11 14:34:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:02,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:02,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:02,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:02,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:02,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:02,109 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:02,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:02,125 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:02,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673750490] [2021-03-11 14:34:02,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:02,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:02,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167880685] [2021-03-11 14:34:02,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:02,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:02,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:02,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:02,140 INFO L87 Difference]: Start difference. First operand 85 states and 193 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:02,178 INFO L93 Difference]: Finished difference Result 117 states and 229 transitions. [2021-03-11 14:34:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:02,179 INFO L225 Difference]: With dead ends: 117 [2021-03-11 14:34:02,179 INFO L226 Difference]: Without dead ends: 104 [2021-03-11 14:34:02,179 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-03-11 14:34:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 79. [2021-03-11 14:34:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.3461538461538463) internal successors, (183), 78 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 14:34:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 183 transitions. [2021-03-11 14:34:02,182 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 183 transitions. Word has length 16 [2021-03-11 14:34:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:02,182 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 183 transitions. [2021-03-11 14:34:02,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 183 transitions. [2021-03-11 14:34:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:02,182 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:02,182 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:02,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 14:34:02,182 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:02,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:02,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1600374380, now seen corresponding path program 49 times [2021-03-11 14:34:02,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:02,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111822967] [2021-03-11 14:34:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:02,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:02,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:02,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:02,202 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:02,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:02,213 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:02,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:02,228 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:02,242 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 14:34:02,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111822967] [2021-03-11 14:34:02,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:02,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:02,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444072612] [2021-03-11 14:34:02,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:02,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:02,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:02,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:02,244 INFO L87 Difference]: Start difference. First operand 79 states and 183 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:02,276 INFO L93 Difference]: Finished difference Result 145 states and 279 transitions. [2021-03-11 14:34:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:02,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:02,277 INFO L225 Difference]: With dead ends: 145 [2021-03-11 14:34:02,277 INFO L226 Difference]: Without dead ends: 133 [2021-03-11 14:34:02,277 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:02,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-03-11 14:34:02,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 85. [2021-03-11 14:34:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.2857142857142856) internal successors, (192), 84 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 14:34:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 192 transitions. [2021-03-11 14:34:02,280 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 192 transitions. Word has length 16 [2021-03-11 14:34:02,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:02,280 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 192 transitions. [2021-03-11 14:34:02,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 192 transitions. [2021-03-11 14:34:02,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:02,280 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:02,280 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:02,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 14:34:02,280 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:02,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:02,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1598212130, now seen corresponding path program 50 times [2021-03-11 14:34:02,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:02,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787058966] [2021-03-11 14:34:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:02,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:02,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:02,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:02,306 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:02,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:02,317 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:02,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:02,331 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:02,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787058966] [2021-03-11 14:34:02,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:02,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:02,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017893682] [2021-03-11 14:34:02,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:02,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:02,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:02,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:02,347 INFO L87 Difference]: Start difference. First operand 85 states and 192 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:02,396 INFO L93 Difference]: Finished difference Result 143 states and 271 transitions. [2021-03-11 14:34:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:02,397 INFO L225 Difference]: With dead ends: 143 [2021-03-11 14:34:02,397 INFO L226 Difference]: Without dead ends: 127 [2021-03-11 14:34:02,397 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-03-11 14:34:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 79. [2021-03-11 14:34:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.2948717948717947) internal successors, (179), 78 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 14:34:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 179 transitions. [2021-03-11 14:34:02,402 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 179 transitions. Word has length 16 [2021-03-11 14:34:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:02,402 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 179 transitions. [2021-03-11 14:34:02,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 179 transitions. [2021-03-11 14:34:02,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:02,403 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:02,403 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:02,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 14:34:02,403 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:02,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:02,403 INFO L82 PathProgramCache]: Analyzing trace with hash 230101472, now seen corresponding path program 51 times [2021-03-11 14:34:02,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:02,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715299700] [2021-03-11 14:34:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:02,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:02,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:02,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:02,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:02,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:02,440 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:02,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:02,458 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:02,474 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 14:34:02,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715299700] [2021-03-11 14:34:02,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:02,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:02,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363651041] [2021-03-11 14:34:02,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:02,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:02,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:02,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:02,475 INFO L87 Difference]: Start difference. First operand 79 states and 179 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:02,506 INFO L93 Difference]: Finished difference Result 140 states and 264 transitions. [2021-03-11 14:34:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:02,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:02,507 INFO L225 Difference]: With dead ends: 140 [2021-03-11 14:34:02,507 INFO L226 Difference]: Without dead ends: 128 [2021-03-11 14:34:02,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-03-11 14:34:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 82. [2021-03-11 14:34:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.259259259259259) internal successors, (183), 81 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 14:34:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 183 transitions. [2021-03-11 14:34:02,510 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 183 transitions. Word has length 16 [2021-03-11 14:34:02,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:02,510 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 183 transitions. [2021-03-11 14:34:02,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 183 transitions. [2021-03-11 14:34:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:02,510 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:02,510 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:02,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 14:34:02,510 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash -916773974, now seen corresponding path program 52 times [2021-03-11 14:34:02,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:02,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277624631] [2021-03-11 14:34:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:02,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:02,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:02,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:02,530 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:02,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:02,548 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:02,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:02,562 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:02,576 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 14:34:02,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277624631] [2021-03-11 14:34:02,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:02,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:02,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134743230] [2021-03-11 14:34:02,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:02,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:02,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:02,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:02,578 INFO L87 Difference]: Start difference. First operand 82 states and 183 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:02,623 INFO L93 Difference]: Finished difference Result 136 states and 254 transitions. [2021-03-11 14:34:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:02,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:02,624 INFO L225 Difference]: With dead ends: 136 [2021-03-11 14:34:02,625 INFO L226 Difference]: Without dead ends: 125 [2021-03-11 14:34:02,625 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-03-11 14:34:02,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 79. [2021-03-11 14:34:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.2564102564102564) internal successors, (176), 78 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 176 transitions. [2021-03-11 14:34:02,628 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 176 transitions. Word has length 16 [2021-03-11 14:34:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:02,628 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 176 transitions. [2021-03-11 14:34:02,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,628 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 176 transitions. [2021-03-11 14:34:02,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:02,628 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:02,628 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:02,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 14:34:02,628 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:02,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:02,629 INFO L82 PathProgramCache]: Analyzing trace with hash -578929946, now seen corresponding path program 53 times [2021-03-11 14:34:02,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:02,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634170602] [2021-03-11 14:34:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:02,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:02,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:02,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:02,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:02,656 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:02,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:02,670 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:02,682 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 14:34:02,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634170602] [2021-03-11 14:34:02,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:02,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:02,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342577713] [2021-03-11 14:34:02,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:02,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:02,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:02,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:02,683 INFO L87 Difference]: Start difference. First operand 79 states and 176 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:02,731 INFO L93 Difference]: Finished difference Result 135 states and 253 transitions. [2021-03-11 14:34:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:02,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:02,731 INFO L225 Difference]: With dead ends: 135 [2021-03-11 14:34:02,732 INFO L226 Difference]: Without dead ends: 125 [2021-03-11 14:34:02,732 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-03-11 14:34:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 81. [2021-03-11 14:34:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.2375) internal successors, (179), 80 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 14:34:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 179 transitions. [2021-03-11 14:34:02,734 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 179 transitions. Word has length 16 [2021-03-11 14:34:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:02,734 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 179 transitions. [2021-03-11 14:34:02,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 179 transitions. [2021-03-11 14:34:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:02,734 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:02,734 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:02,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-11 14:34:02,734 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:02,735 INFO L82 PathProgramCache]: Analyzing trace with hash 793839334, now seen corresponding path program 54 times [2021-03-11 14:34:02,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:02,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401582214] [2021-03-11 14:34:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:02,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:02,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:02,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:02,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:02,761 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:02,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:02,775 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:02,789 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 14:34:02,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401582214] [2021-03-11 14:34:02,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:02,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:02,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466601076] [2021-03-11 14:34:02,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:02,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:02,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:02,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:02,790 INFO L87 Difference]: Start difference. First operand 81 states and 179 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:02,830 INFO L93 Difference]: Finished difference Result 133 states and 247 transitions. [2021-03-11 14:34:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:02,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:02,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:02,831 INFO L225 Difference]: With dead ends: 133 [2021-03-11 14:34:02,831 INFO L226 Difference]: Without dead ends: 119 [2021-03-11 14:34:02,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:02,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-03-11 14:34:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 75. [2021-03-11 14:34:02,833 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 14:34:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 168 transitions. [2021-03-11 14:34:02,833 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 168 transitions. Word has length 16 [2021-03-11 14:34:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:02,833 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 168 transitions. [2021-03-11 14:34:02,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 168 transitions. [2021-03-11 14:34:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:02,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:02,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:02,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-11 14:34:02,834 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:02,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:02,834 INFO L82 PathProgramCache]: Analyzing trace with hash -714576100, now seen corresponding path program 55 times [2021-03-11 14:34:02,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:02,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858405253] [2021-03-11 14:34:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:02,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:02,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:02,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:02,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:02,856 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:02,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:02,867 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:02,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:02,883 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:02,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858405253] [2021-03-11 14:34:02,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:02,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:02,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096330874] [2021-03-11 14:34:02,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:02,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:02,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:02,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:02,898 INFO L87 Difference]: Start difference. First operand 75 states and 168 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:02,933 INFO L93 Difference]: Finished difference Result 132 states and 242 transitions. [2021-03-11 14:34:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:02,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:02,934 INFO L225 Difference]: With dead ends: 132 [2021-03-11 14:34:02,934 INFO L226 Difference]: Without dead ends: 120 [2021-03-11 14:34:02,934 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:02,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-03-11 14:34:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 75. [2021-03-11 14:34:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.2027027027027026) internal successors, (163), 74 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 163 transitions. [2021-03-11 14:34:02,936 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 163 transitions. Word has length 16 [2021-03-11 14:34:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:02,936 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 163 transitions. [2021-03-11 14:34:02,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 163 transitions. [2021-03-11 14:34:02,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:02,937 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:02,937 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:02,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-11 14:34:02,937 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:02,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:02,937 INFO L82 PathProgramCache]: Analyzing trace with hash -712413850, now seen corresponding path program 56 times [2021-03-11 14:34:02,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:02,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743800754] [2021-03-11 14:34:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:02,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:02,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:02,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:02,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:02,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:02,960 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:02,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:02,971 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:02,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:02,986 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:02,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:03,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743800754] [2021-03-11 14:34:03,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:03,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:03,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753671354] [2021-03-11 14:34:03,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:03,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:03,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:03,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:03,004 INFO L87 Difference]: Start difference. First operand 75 states and 163 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:03,047 INFO L93 Difference]: Finished difference Result 130 states and 234 transitions. [2021-03-11 14:34:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:03,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:03,048 INFO L225 Difference]: With dead ends: 130 [2021-03-11 14:34:03,048 INFO L226 Difference]: Without dead ends: 114 [2021-03-11 14:34:03,049 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-03-11 14:34:03,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 69. [2021-03-11 14:34:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.2205882352941178) internal successors, (151), 68 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 151 transitions. [2021-03-11 14:34:03,055 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 151 transitions. Word has length 16 [2021-03-11 14:34:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:03,055 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 151 transitions. [2021-03-11 14:34:03,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,055 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 151 transitions. [2021-03-11 14:34:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:03,056 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:03,056 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:03,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-11 14:34:03,056 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:03,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:03,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1414706174, now seen corresponding path program 57 times [2021-03-11 14:34:03,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:03,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095157782] [2021-03-11 14:34:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:03,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:03,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:03,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:03,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:03,085 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:03,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:03,101 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:03,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:03,120 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:03,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:03,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095157782] [2021-03-11 14:34:03,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:03,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:03,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135661423] [2021-03-11 14:34:03,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:03,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:03,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:03,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:03,136 INFO L87 Difference]: Start difference. First operand 69 states and 151 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:03,171 INFO L93 Difference]: Finished difference Result 119 states and 213 transitions. [2021-03-11 14:34:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:03,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:03,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:03,172 INFO L225 Difference]: With dead ends: 119 [2021-03-11 14:34:03,172 INFO L226 Difference]: Without dead ends: 107 [2021-03-11 14:34:03,172 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-03-11 14:34:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 71. [2021-03-11 14:34:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.1857142857142855) internal successors, (153), 70 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 153 transitions. [2021-03-11 14:34:03,174 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 153 transitions. Word has length 16 [2021-03-11 14:34:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:03,174 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 153 transitions. [2021-03-11 14:34:03,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 153 transitions. [2021-03-11 14:34:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:03,175 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:03,175 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:03,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-11 14:34:03,175 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:03,175 INFO L82 PathProgramCache]: Analyzing trace with hash 16231262, now seen corresponding path program 58 times [2021-03-11 14:34:03,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:03,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023962778] [2021-03-11 14:34:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:03,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:03,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:03,192 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:03,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:03,204 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:03,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:03,221 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:03,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:03,238 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:03,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:03,252 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 14:34:03,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023962778] [2021-03-11 14:34:03,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:03,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:03,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705401110] [2021-03-11 14:34:03,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:03,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:03,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:03,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:03,253 INFO L87 Difference]: Start difference. First operand 71 states and 153 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:03,285 INFO L93 Difference]: Finished difference Result 107 states and 196 transitions. [2021-03-11 14:34:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:03,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:03,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:03,286 INFO L225 Difference]: With dead ends: 107 [2021-03-11 14:34:03,286 INFO L226 Difference]: Without dead ends: 98 [2021-03-11 14:34:03,286 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-03-11 14:34:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 69. [2021-03-11 14:34:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.1911764705882355) internal successors, (149), 68 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 149 transitions. [2021-03-11 14:34:03,288 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 149 transitions. Word has length 16 [2021-03-11 14:34:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:03,288 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 149 transitions. [2021-03-11 14:34:03,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 149 transitions. [2021-03-11 14:34:03,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:03,289 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:03,289 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:03,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-11 14:34:03,289 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:03,289 INFO L82 PathProgramCache]: Analyzing trace with hash -734332596, now seen corresponding path program 59 times [2021-03-11 14:34:03,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:03,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119563415] [2021-03-11 14:34:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:03,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:03,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:03,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:03,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:03,319 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:03,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:03,336 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:03,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:03,350 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:03,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:03,365 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 14:34:03,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119563415] [2021-03-11 14:34:03,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:03,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:03,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782142382] [2021-03-11 14:34:03,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:03,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:03,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:03,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:03,367 INFO L87 Difference]: Start difference. First operand 69 states and 149 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:03,414 INFO L93 Difference]: Finished difference Result 116 states and 206 transitions. [2021-03-11 14:34:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:03,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:03,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:03,414 INFO L225 Difference]: With dead ends: 116 [2021-03-11 14:34:03,415 INFO L226 Difference]: Without dead ends: 106 [2021-03-11 14:34:03,415 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:03,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-03-11 14:34:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2021-03-11 14:34:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.1739130434782608) internal successors, (150), 69 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 150 transitions. [2021-03-11 14:34:03,417 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 150 transitions. Word has length 16 [2021-03-11 14:34:03,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:03,417 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 150 transitions. [2021-03-11 14:34:03,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,417 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 150 transitions. [2021-03-11 14:34:03,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:03,417 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:03,417 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:03,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-11 14:34:03,417 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:03,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:03,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1505636258, now seen corresponding path program 60 times [2021-03-11 14:34:03,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:03,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405156908] [2021-03-11 14:34:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:03,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:03,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:03,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:03,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:03,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:03,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:03,463 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:03,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:03,478 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:03,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:03,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405156908] [2021-03-11 14:34:03,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:03,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:03,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10614012] [2021-03-11 14:34:03,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:03,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:03,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:03,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:03,496 INFO L87 Difference]: Start difference. First operand 70 states and 150 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:03,532 INFO L93 Difference]: Finished difference Result 106 states and 193 transitions. [2021-03-11 14:34:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:03,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:03,533 INFO L225 Difference]: With dead ends: 106 [2021-03-11 14:34:03,533 INFO L226 Difference]: Without dead ends: 95 [2021-03-11 14:34:03,533 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:03,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-03-11 14:34:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 66. [2021-03-11 14:34:03,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.2) internal successors, (143), 65 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 143 transitions. [2021-03-11 14:34:03,536 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 143 transitions. Word has length 16 [2021-03-11 14:34:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:03,537 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 143 transitions. [2021-03-11 14:34:03,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,537 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 143 transitions. [2021-03-11 14:34:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:03,537 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:03,537 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:03,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-11 14:34:03,538 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:03,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:03,538 INFO L82 PathProgramCache]: Analyzing trace with hash 69289948, now seen corresponding path program 61 times [2021-03-11 14:34:03,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:03,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495447630] [2021-03-11 14:34:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:03,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:03,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:03,551 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:03,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:03,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:03,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:03,581 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:03,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:03,596 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:03,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:03,611 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 14:34:03,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495447630] [2021-03-11 14:34:03,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:03,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:03,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275063722] [2021-03-11 14:34:03,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:03,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:03,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:03,613 INFO L87 Difference]: Start difference. First operand 66 states and 143 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:03,645 INFO L93 Difference]: Finished difference Result 118 states and 212 transitions. [2021-03-11 14:34:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:03,646 INFO L225 Difference]: With dead ends: 118 [2021-03-11 14:34:03,646 INFO L226 Difference]: Without dead ends: 106 [2021-03-11 14:34:03,647 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-03-11 14:34:03,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 71. [2021-03-11 14:34:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.1857142857142855) internal successors, (153), 70 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 153 transitions. [2021-03-11 14:34:03,649 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 153 transitions. Word has length 16 [2021-03-11 14:34:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:03,649 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 153 transitions. [2021-03-11 14:34:03,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 153 transitions. [2021-03-11 14:34:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:03,649 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:03,650 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:03,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-11 14:34:03,650 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:03,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1077585498, now seen corresponding path program 62 times [2021-03-11 14:34:03,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:03,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531479011] [2021-03-11 14:34:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:03,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:03,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:03,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:03,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:03,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:03,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:03,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:03,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:03,723 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:03,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:03,739 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 14:34:03,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531479011] [2021-03-11 14:34:03,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:03,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:03,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860158318] [2021-03-11 14:34:03,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:03,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:03,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:03,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:03,740 INFO L87 Difference]: Start difference. First operand 71 states and 153 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:03,784 INFO L93 Difference]: Finished difference Result 114 states and 202 transitions. [2021-03-11 14:34:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:03,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:03,785 INFO L225 Difference]: With dead ends: 114 [2021-03-11 14:34:03,785 INFO L226 Difference]: Without dead ends: 103 [2021-03-11 14:34:03,785 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-03-11 14:34:03,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 68. [2021-03-11 14:34:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.1940298507462686) internal successors, (147), 67 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 147 transitions. [2021-03-11 14:34:03,787 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 147 transitions. Word has length 16 [2021-03-11 14:34:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:03,787 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 147 transitions. [2021-03-11 14:34:03,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,788 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 147 transitions. [2021-03-11 14:34:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:03,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:03,788 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:03,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-11 14:34:03,788 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:03,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:03,788 INFO L82 PathProgramCache]: Analyzing trace with hash 437970468, now seen corresponding path program 63 times [2021-03-11 14:34:03,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:03,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122892115] [2021-03-11 14:34:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:03,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:03,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:03,802 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:03,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:03,814 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:03,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:03,831 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:03,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:03,847 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:03,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:03,861 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 14:34:03,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122892115] [2021-03-11 14:34:03,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:03,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:03,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520334871] [2021-03-11 14:34:03,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:03,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:03,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:03,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:03,862 INFO L87 Difference]: Start difference. First operand 68 states and 147 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:03,902 INFO L93 Difference]: Finished difference Result 108 states and 191 transitions. [2021-03-11 14:34:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:03,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:03,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:03,902 INFO L225 Difference]: With dead ends: 108 [2021-03-11 14:34:03,902 INFO L226 Difference]: Without dead ends: 96 [2021-03-11 14:34:03,902 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-03-11 14:34:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2021-03-11 14:34:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 69 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 149 transitions. [2021-03-11 14:34:03,904 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 149 transitions. Word has length 16 [2021-03-11 14:34:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:03,904 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 149 transitions. [2021-03-11 14:34:03,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 149 transitions. [2021-03-11 14:34:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:03,904 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:03,904 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:03,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-11 14:34:03,904 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:03,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1868907904, now seen corresponding path program 64 times [2021-03-11 14:34:03,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:03,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27732249] [2021-03-11 14:34:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:03,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:03,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:03,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:03,920 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:03,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:03,935 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:03,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:03,953 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:03,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:03,969 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:03,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:03,981 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 14:34:03,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27732249] [2021-03-11 14:34:03,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:03,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:03,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38223292] [2021-03-11 14:34:03,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:03,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:03,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:03,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:03,982 INFO L87 Difference]: Start difference. First operand 70 states and 149 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:04,024 INFO L93 Difference]: Finished difference Result 96 states and 174 transitions. [2021-03-11 14:34:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:04,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:04,024 INFO L225 Difference]: With dead ends: 96 [2021-03-11 14:34:04,024 INFO L226 Difference]: Without dead ends: 87 [2021-03-11 14:34:04,025 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-03-11 14:34:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68. [2021-03-11 14:34:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 67 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 145 transitions. [2021-03-11 14:34:04,026 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 145 transitions. Word has length 16 [2021-03-11 14:34:04,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:04,026 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 145 transitions. [2021-03-11 14:34:04,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,027 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 145 transitions. [2021-03-11 14:34:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:04,027 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:04,027 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:04,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-11 14:34:04,027 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:04,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:04,027 INFO L82 PathProgramCache]: Analyzing trace with hash -203844818, now seen corresponding path program 65 times [2021-03-11 14:34:04,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:04,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031992287] [2021-03-11 14:34:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:04,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:04,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:04,039 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:04,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:04,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:04,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:04,064 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:04,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:04,080 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:04,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:04,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031992287] [2021-03-11 14:34:04,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:04,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:04,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014874062] [2021-03-11 14:34:04,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:04,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:04,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:04,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:04,096 INFO L87 Difference]: Start difference. First operand 68 states and 145 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:04,137 INFO L93 Difference]: Finished difference Result 96 states and 174 transitions. [2021-03-11 14:34:04,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:04,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:04,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:04,138 INFO L225 Difference]: With dead ends: 96 [2021-03-11 14:34:04,138 INFO L226 Difference]: Without dead ends: 88 [2021-03-11 14:34:04,138 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:04,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-03-11 14:34:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2021-03-11 14:34:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.1470588235294117) internal successors, (146), 68 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 146 transitions. [2021-03-11 14:34:04,140 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 146 transitions. Word has length 16 [2021-03-11 14:34:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:04,140 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 146 transitions. [2021-03-11 14:34:04,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 146 transitions. [2021-03-11 14:34:04,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:04,140 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:04,140 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:04,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-11 14:34:04,140 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:04,141 INFO L82 PathProgramCache]: Analyzing trace with hash -191951898, now seen corresponding path program 66 times [2021-03-11 14:34:04,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:04,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970817450] [2021-03-11 14:34:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:04,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:04,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:04,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:04,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:04,169 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:04,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:04,182 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:04,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:04,200 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:04,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:04,215 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 14:34:04,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970817450] [2021-03-11 14:34:04,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:04,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:04,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54789423] [2021-03-11 14:34:04,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:04,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:04,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:04,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:04,216 INFO L87 Difference]: Start difference. First operand 69 states and 146 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:04,243 INFO L93 Difference]: Finished difference Result 87 states and 164 transitions. [2021-03-11 14:34:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:04,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:04,244 INFO L225 Difference]: With dead ends: 87 [2021-03-11 14:34:04,244 INFO L226 Difference]: Without dead ends: 77 [2021-03-11 14:34:04,244 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-03-11 14:34:04,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2021-03-11 14:34:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.169230769230769) internal successors, (141), 65 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 141 transitions. [2021-03-11 14:34:04,246 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 141 transitions. Word has length 16 [2021-03-11 14:34:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:04,246 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 141 transitions. [2021-03-11 14:34:04,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 141 transitions. [2021-03-11 14:34:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:04,246 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:04,246 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:04,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-11 14:34:04,246 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -323421854, now seen corresponding path program 67 times [2021-03-11 14:34:04,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:04,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952485560] [2021-03-11 14:34:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:04,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:04,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:04,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:04,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:04,289 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:04,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:04,303 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:04,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:04,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952485560] [2021-03-11 14:34:04,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:04,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:04,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431749720] [2021-03-11 14:34:04,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:04,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:04,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:04,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:04,318 INFO L87 Difference]: Start difference. First operand 66 states and 141 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:04,378 INFO L93 Difference]: Finished difference Result 111 states and 197 transitions. [2021-03-11 14:34:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:04,379 INFO L225 Difference]: With dead ends: 111 [2021-03-11 14:34:04,379 INFO L226 Difference]: Without dead ends: 101 [2021-03-11 14:34:04,379 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:04,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-03-11 14:34:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 69. [2021-03-11 14:34:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.161764705882353) internal successors, (147), 68 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 147 transitions. [2021-03-11 14:34:04,381 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 147 transitions. Word has length 16 [2021-03-11 14:34:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:04,381 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 147 transitions. [2021-03-11 14:34:04,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 147 transitions. [2021-03-11 14:34:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:04,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:04,381 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:04,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-11 14:34:04,382 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:04,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:04,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1049347426, now seen corresponding path program 68 times [2021-03-11 14:34:04,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:04,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583281301] [2021-03-11 14:34:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:04,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:04,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:04,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:04,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:04,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:04,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:04,431 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:04,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:04,447 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 14:34:04,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583281301] [2021-03-11 14:34:04,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:04,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:04,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074271772] [2021-03-11 14:34:04,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:04,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:04,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:04,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:04,448 INFO L87 Difference]: Start difference. First operand 69 states and 147 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:04,497 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2021-03-11 14:34:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:04,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:04,498 INFO L225 Difference]: With dead ends: 109 [2021-03-11 14:34:04,498 INFO L226 Difference]: Without dead ends: 99 [2021-03-11 14:34:04,498 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-03-11 14:34:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 67. [2021-03-11 14:34:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.1666666666666665) internal successors, (143), 66 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 143 transitions. [2021-03-11 14:34:04,499 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 143 transitions. Word has length 16 [2021-03-11 14:34:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:04,500 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 143 transitions. [2021-03-11 14:34:04,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,500 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 143 transitions. [2021-03-11 14:34:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:04,500 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:04,500 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:04,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-11 14:34:04,500 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:04,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:04,500 INFO L82 PathProgramCache]: Analyzing trace with hash 45258666, now seen corresponding path program 69 times [2021-03-11 14:34:04,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:04,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270704922] [2021-03-11 14:34:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:04,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:04,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:04,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:04,517 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:04,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:04,533 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:04,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:04,548 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:04,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:04,565 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 14:34:04,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270704922] [2021-03-11 14:34:04,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:04,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:04,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734826550] [2021-03-11 14:34:04,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:04,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:04,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:04,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:04,566 INFO L87 Difference]: Start difference. First operand 67 states and 143 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:04,616 INFO L93 Difference]: Finished difference Result 104 states and 182 transitions. [2021-03-11 14:34:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:04,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:04,617 INFO L225 Difference]: With dead ends: 104 [2021-03-11 14:34:04,617 INFO L226 Difference]: Without dead ends: 94 [2021-03-11 14:34:04,617 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-03-11 14:34:04,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 68. [2021-03-11 14:34:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.1492537313432836) internal successors, (144), 67 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 14:34:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2021-03-11 14:34:04,618 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 16 [2021-03-11 14:34:04,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:04,618 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2021-03-11 14:34:04,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,619 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2021-03-11 14:34:04,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:04,619 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:04,619 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:04,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-11 14:34:04,619 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:04,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:04,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2009739776, now seen corresponding path program 70 times [2021-03-11 14:34:04,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:04,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114141648] [2021-03-11 14:34:04,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:04,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:04,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:04,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:04,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:04,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:04,654 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:04,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:04,671 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:04,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:04,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114141648] [2021-03-11 14:34:04,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:04,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:04,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201150086] [2021-03-11 14:34:04,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:04,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:04,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:04,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:04,688 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:04,722 INFO L93 Difference]: Finished difference Result 94 states and 169 transitions. [2021-03-11 14:34:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:04,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:04,723 INFO L225 Difference]: With dead ends: 94 [2021-03-11 14:34:04,723 INFO L226 Difference]: Without dead ends: 86 [2021-03-11 14:34:04,723 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-03-11 14:34:04,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2021-03-11 14:34:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.1515151515151514) internal successors, (142), 66 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 142 transitions. [2021-03-11 14:34:04,725 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 142 transitions. Word has length 16 [2021-03-11 14:34:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:04,725 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 142 transitions. [2021-03-11 14:34:04,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 142 transitions. [2021-03-11 14:34:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:04,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:04,725 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:04,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-11 14:34:04,726 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:04,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1276930198, now seen corresponding path program 71 times [2021-03-11 14:34:04,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:04,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482336182] [2021-03-11 14:34:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:04,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:04,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:04,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:04,742 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:04,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:04,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:04,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:04,768 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:04,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:04,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482336182] [2021-03-11 14:34:04,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:04,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:04,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232784947] [2021-03-11 14:34:04,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:04,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:04,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:04,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:04,786 INFO L87 Difference]: Start difference. First operand 67 states and 142 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:04,830 INFO L93 Difference]: Finished difference Result 95 states and 171 transitions. [2021-03-11 14:34:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:04,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:04,831 INFO L225 Difference]: With dead ends: 95 [2021-03-11 14:34:04,831 INFO L226 Difference]: Without dead ends: 87 [2021-03-11 14:34:04,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-03-11 14:34:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68. [2021-03-11 14:34:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 67 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 143 transitions. [2021-03-11 14:34:04,833 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 143 transitions. Word has length 16 [2021-03-11 14:34:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:04,833 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 143 transitions. [2021-03-11 14:34:04,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 143 transitions. [2021-03-11 14:34:04,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:04,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:04,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:04,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-11 14:34:04,833 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:04,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1265037278, now seen corresponding path program 72 times [2021-03-11 14:34:04,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:04,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121976500] [2021-03-11 14:34:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:04,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:04,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:04,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:04,850 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:04,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:04,862 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:04,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:04,879 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:04,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:04,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121976500] [2021-03-11 14:34:04,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:04,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:04,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783491574] [2021-03-11 14:34:04,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:04,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:04,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:04,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:04,905 INFO L87 Difference]: Start difference. First operand 68 states and 143 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:04,935 INFO L93 Difference]: Finished difference Result 86 states and 161 transitions. [2021-03-11 14:34:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:04,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:04,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:04,936 INFO L225 Difference]: With dead ends: 86 [2021-03-11 14:34:04,936 INFO L226 Difference]: Without dead ends: 74 [2021-03-11 14:34:04,936 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:04,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-03-11 14:34:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2021-03-11 14:34:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 62 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 135 transitions. [2021-03-11 14:34:04,938 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 135 transitions. Word has length 16 [2021-03-11 14:34:04,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:04,938 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 135 transitions. [2021-03-11 14:34:04,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 135 transitions. [2021-03-11 14:34:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:04,938 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:04,938 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:04,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-11 14:34:04,939 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:04,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1087283428, now seen corresponding path program 73 times [2021-03-11 14:34:04,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:04,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436712983] [2021-03-11 14:34:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:04,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:04,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:04,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:04,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:04,957 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:04,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:04,979 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:04,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:04,997 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:04,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,013 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 14:34:05,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436712983] [2021-03-11 14:34:05,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601632947] [2021-03-11 14:34:05,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,014 INFO L87 Difference]: Start difference. First operand 63 states and 135 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:05,047 INFO L93 Difference]: Finished difference Result 114 states and 201 transitions. [2021-03-11 14:34:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:05,048 INFO L225 Difference]: With dead ends: 114 [2021-03-11 14:34:05,048 INFO L226 Difference]: Without dead ends: 102 [2021-03-11 14:34:05,048 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-03-11 14:34:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 66. [2021-03-11 14:34:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.1384615384615384) internal successors, (139), 65 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 139 transitions. [2021-03-11 14:34:05,049 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 139 transitions. Word has length 16 [2021-03-11 14:34:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:05,049 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 139 transitions. [2021-03-11 14:34:05,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 139 transitions. [2021-03-11 14:34:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:05,050 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:05,050 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:05,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-11 14:34:05,050 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:05,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:05,050 INFO L82 PathProgramCache]: Analyzing trace with hash -59592018, now seen corresponding path program 74 times [2021-03-11 14:34:05,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:05,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671812217] [2021-03-11 14:34:05,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:05,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:05,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:05,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:05,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:05,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:05,091 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:05,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:05,106 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:05,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:05,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671812217] [2021-03-11 14:34:05,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371696681] [2021-03-11 14:34:05,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,119 INFO L87 Difference]: Start difference. First operand 66 states and 139 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:05,160 INFO L93 Difference]: Finished difference Result 110 states and 191 transitions. [2021-03-11 14:34:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:05,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:05,161 INFO L225 Difference]: With dead ends: 110 [2021-03-11 14:34:05,161 INFO L226 Difference]: Without dead ends: 99 [2021-03-11 14:34:05,161 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:05,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-03-11 14:34:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 63. [2021-03-11 14:34:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.129032258064516) internal successors, (132), 62 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 132 transitions. [2021-03-11 14:34:05,162 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 132 transitions. Word has length 16 [2021-03-11 14:34:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:05,163 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 132 transitions. [2021-03-11 14:34:05,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,163 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 132 transitions. [2021-03-11 14:34:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:05,163 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:05,163 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:05,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-11 14:34:05,163 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:05,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:05,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1942590082, now seen corresponding path program 75 times [2021-03-11 14:34:05,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:05,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226859939] [2021-03-11 14:34:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:05,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:05,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:05,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:05,180 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:05,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:05,191 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:05,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:05,203 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:05,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,219 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 14:34:05,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226859939] [2021-03-11 14:34:05,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999462223] [2021-03-11 14:34:05,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,220 INFO L87 Difference]: Start difference. First operand 63 states and 132 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:05,251 INFO L93 Difference]: Finished difference Result 116 states and 203 transitions. [2021-03-11 14:34:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:05,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:05,252 INFO L225 Difference]: With dead ends: 116 [2021-03-11 14:34:05,252 INFO L226 Difference]: Without dead ends: 104 [2021-03-11 14:34:05,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-03-11 14:34:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 67. [2021-03-11 14:34:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.090909090909091) internal successors, (138), 66 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 138 transitions. [2021-03-11 14:34:05,254 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 138 transitions. Word has length 16 [2021-03-11 14:34:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:05,254 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 138 transitions. [2021-03-11 14:34:05,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 138 transitions. [2021-03-11 14:34:05,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:05,254 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:05,254 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:05,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-11 14:34:05,254 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:05,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:05,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1213677670, now seen corresponding path program 76 times [2021-03-11 14:34:05,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:05,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154695022] [2021-03-11 14:34:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:05,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:05,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:05,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:05,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:05,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:05,300 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:05,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:05,314 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:05,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:05,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154695022] [2021-03-11 14:34:05,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045561298] [2021-03-11 14:34:05,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,330 INFO L87 Difference]: Start difference. First operand 67 states and 138 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:05,373 INFO L93 Difference]: Finished difference Result 113 states and 194 transitions. [2021-03-11 14:34:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:05,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:05,374 INFO L225 Difference]: With dead ends: 113 [2021-03-11 14:34:05,374 INFO L226 Difference]: Without dead ends: 100 [2021-03-11 14:34:05,374 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-03-11 14:34:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 63. [2021-03-11 14:34:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 62 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 129 transitions. [2021-03-11 14:34:05,375 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 129 transitions. Word has length 16 [2021-03-11 14:34:05,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:05,375 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 129 transitions. [2021-03-11 14:34:05,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,375 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 129 transitions. [2021-03-11 14:34:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:05,375 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:05,375 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:05,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-11 14:34:05,376 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:05,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:05,376 INFO L82 PathProgramCache]: Analyzing trace with hash -933332698, now seen corresponding path program 77 times [2021-03-11 14:34:05,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:05,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192502499] [2021-03-11 14:34:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:05,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:05,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:05,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:05,393 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:05,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:05,403 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:05,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:05,419 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:05,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:05,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192502499] [2021-03-11 14:34:05,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243051402] [2021-03-11 14:34:05,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,436 INFO L87 Difference]: Start difference. First operand 63 states and 129 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:05,482 INFO L93 Difference]: Finished difference Result 106 states and 181 transitions. [2021-03-11 14:34:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:05,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:05,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:05,483 INFO L225 Difference]: With dead ends: 106 [2021-03-11 14:34:05,483 INFO L226 Difference]: Without dead ends: 98 [2021-03-11 14:34:05,483 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-03-11 14:34:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2021-03-11 14:34:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 2.0625) internal successors, (132), 64 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 132 transitions. [2021-03-11 14:34:05,484 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 132 transitions. Word has length 16 [2021-03-11 14:34:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:05,485 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 132 transitions. [2021-03-11 14:34:05,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 132 transitions. [2021-03-11 14:34:05,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:05,485 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:05,485 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:05,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-11 14:34:05,485 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash -74458168, now seen corresponding path program 78 times [2021-03-11 14:34:05,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:05,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276054418] [2021-03-11 14:34:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:05,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:05,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:05,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:05,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:05,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:05,512 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:05,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:05,526 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:05,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:05,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276054418] [2021-03-11 14:34:05,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140652] [2021-03-11 14:34:05,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,540 INFO L87 Difference]: Start difference. First operand 65 states and 132 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:05,583 INFO L93 Difference]: Finished difference Result 107 states and 181 transitions. [2021-03-11 14:34:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:05,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:05,584 INFO L225 Difference]: With dead ends: 107 [2021-03-11 14:34:05,584 INFO L226 Difference]: Without dead ends: 93 [2021-03-11 14:34:05,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-03-11 14:34:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 60. [2021-03-11 14:34:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 123 transitions. [2021-03-11 14:34:05,585 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 123 transitions. Word has length 16 [2021-03-11 14:34:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:05,585 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 123 transitions. [2021-03-11 14:34:05,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 123 transitions. [2021-03-11 14:34:05,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:05,586 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:05,586 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:05,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-11 14:34:05,586 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:05,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:05,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1570801500, now seen corresponding path program 79 times [2021-03-11 14:34:05,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:05,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583383668] [2021-03-11 14:34:05,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:05,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:05,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:05,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:05,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:05,608 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:05,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:05,625 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:05,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:05,639 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:05,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:05,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583383668] [2021-03-11 14:34:05,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726954149] [2021-03-11 14:34:05,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,655 INFO L87 Difference]: Start difference. First operand 60 states and 123 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:05,688 INFO L93 Difference]: Finished difference Result 105 states and 175 transitions. [2021-03-11 14:34:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:05,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:05,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:05,689 INFO L225 Difference]: With dead ends: 105 [2021-03-11 14:34:05,689 INFO L226 Difference]: Without dead ends: 93 [2021-03-11 14:34:05,689 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-03-11 14:34:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 60. [2021-03-11 14:34:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 59 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2021-03-11 14:34:05,690 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 16 [2021-03-11 14:34:05,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:05,690 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2021-03-11 14:34:05,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,690 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2021-03-11 14:34:05,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:05,691 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:05,691 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:05,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-11 14:34:05,691 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:05,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:05,691 INFO L82 PathProgramCache]: Analyzing trace with hash 423926054, now seen corresponding path program 80 times [2021-03-11 14:34:05,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:05,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288376632] [2021-03-11 14:34:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:05,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:05,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:05,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:05,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:05,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:05,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:05,734 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:05,748 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:05,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:05,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288376632] [2021-03-11 14:34:05,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543116678] [2021-03-11 14:34:05,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,764 INFO L87 Difference]: Start difference. First operand 60 states and 120 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:05,806 INFO L93 Difference]: Finished difference Result 101 states and 165 transitions. [2021-03-11 14:34:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:05,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:05,807 INFO L225 Difference]: With dead ends: 101 [2021-03-11 14:34:05,807 INFO L226 Difference]: Without dead ends: 90 [2021-03-11 14:34:05,807 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 83.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:05,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-03-11 14:34:05,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 57. [2021-03-11 14:34:05,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 56 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 14:34:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 114 transitions. [2021-03-11 14:34:05,808 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 114 transitions. Word has length 16 [2021-03-11 14:34:05,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:05,808 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 114 transitions. [2021-03-11 14:34:05,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 114 transitions. [2021-03-11 14:34:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:05,809 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:05,809 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:05,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-11 14:34:05,809 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:05,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:05,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1939482020, now seen corresponding path program 81 times [2021-03-11 14:34:05,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:05,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001393579] [2021-03-11 14:34:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:05,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:05,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:05,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:05,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:05,837 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:05,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:05,851 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:05,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:05,865 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:05,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,880 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 14:34:05,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001393579] [2021-03-11 14:34:05,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417477299] [2021-03-11 14:34:05,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,881 INFO L87 Difference]: Start difference. First operand 57 states and 114 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:05,912 INFO L93 Difference]: Finished difference Result 97 states and 158 transitions. [2021-03-11 14:34:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:05,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:05,913 INFO L225 Difference]: With dead ends: 97 [2021-03-11 14:34:05,913 INFO L226 Difference]: Without dead ends: 85 [2021-03-11 14:34:05,913 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:05,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-03-11 14:34:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 59. [2021-03-11 14:34:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 2.0) internal successors, (116), 58 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 116 transitions. [2021-03-11 14:34:05,916 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 116 transitions. Word has length 16 [2021-03-11 14:34:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:05,916 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 116 transitions. [2021-03-11 14:34:05,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 116 transitions. [2021-03-11 14:34:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:05,917 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:05,917 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:05,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-11 14:34:05,917 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:05,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:05,918 INFO L82 PathProgramCache]: Analyzing trace with hash -924547840, now seen corresponding path program 82 times [2021-03-11 14:34:05,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:05,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646483208] [2021-03-11 14:34:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:05,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:05,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:05,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:05,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:05,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:05,943 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:05,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:05,959 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:05,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:05,976 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:05,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:05,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646483208] [2021-03-11 14:34:05,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:05,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:05,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174379392] [2021-03-11 14:34:05,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:05,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:05,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:05,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:05,994 INFO L87 Difference]: Start difference. First operand 59 states and 116 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:06,030 INFO L93 Difference]: Finished difference Result 85 states and 141 transitions. [2021-03-11 14:34:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:06,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:06,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:06,031 INFO L225 Difference]: With dead ends: 85 [2021-03-11 14:34:06,031 INFO L226 Difference]: Without dead ends: 76 [2021-03-11 14:34:06,031 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-03-11 14:34:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2021-03-11 14:34:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.0) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 112 transitions. [2021-03-11 14:34:06,032 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 112 transitions. Word has length 16 [2021-03-11 14:34:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:06,032 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 112 transitions. [2021-03-11 14:34:06,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 112 transitions. [2021-03-11 14:34:06,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:06,033 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:06,033 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:06,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-11 14:34:06,033 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:06,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1297666734, now seen corresponding path program 83 times [2021-03-11 14:34:06,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:06,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981482610] [2021-03-11 14:34:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:06,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:06,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:06,044 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:06,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:06,056 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:06,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:06,067 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:06,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:06,081 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:06,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:06,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981482610] [2021-03-11 14:34:06,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:06,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:06,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515640374] [2021-03-11 14:34:06,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:06,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:06,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:06,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:06,098 INFO L87 Difference]: Start difference. First operand 57 states and 112 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:06,140 INFO L93 Difference]: Finished difference Result 92 states and 147 transitions. [2021-03-11 14:34:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:06,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:06,143 INFO L225 Difference]: With dead ends: 92 [2021-03-11 14:34:06,143 INFO L226 Difference]: Without dead ends: 84 [2021-03-11 14:34:06,143 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:06,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-03-11 14:34:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 58. [2021-03-11 14:34:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.9824561403508771) internal successors, (113), 57 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 14:34:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 113 transitions. [2021-03-11 14:34:06,145 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 113 transitions. Word has length 16 [2021-03-11 14:34:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:06,145 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 113 transitions. [2021-03-11 14:34:06,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 113 transitions. [2021-03-11 14:34:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:06,145 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:06,145 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:06,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-11 14:34:06,145 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1309559654, now seen corresponding path program 84 times [2021-03-11 14:34:06,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:06,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012967332] [2021-03-11 14:34:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:06,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:06,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:06,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:06,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:06,174 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:06,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:06,189 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:06,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:06,206 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:06,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:06,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012967332] [2021-03-11 14:34:06,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:06,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:06,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817499930] [2021-03-11 14:34:06,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:06,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:06,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:06,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:06,224 INFO L87 Difference]: Start difference. First operand 58 states and 113 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:06,257 INFO L93 Difference]: Finished difference Result 84 states and 138 transitions. [2021-03-11 14:34:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:06,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:06,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:06,258 INFO L225 Difference]: With dead ends: 84 [2021-03-11 14:34:06,258 INFO L226 Difference]: Without dead ends: 74 [2021-03-11 14:34:06,258 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-03-11 14:34:06,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2021-03-11 14:34:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.0) internal successors, (108), 54 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 14:34:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 108 transitions. [2021-03-11 14:34:06,259 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 108 transitions. Word has length 16 [2021-03-11 14:34:06,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:06,259 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 108 transitions. [2021-03-11 14:34:06,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 108 transitions. [2021-03-11 14:34:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:06,260 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:06,260 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:06,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-11 14:34:06,260 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:06,260 INFO L82 PathProgramCache]: Analyzing trace with hash 486784314, now seen corresponding path program 85 times [2021-03-11 14:34:06,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:06,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116186385] [2021-03-11 14:34:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:06,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:06,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:06,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:06,279 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:06,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:06,290 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:06,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:06,306 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:06,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:06,318 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 14:34:06,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116186385] [2021-03-11 14:34:06,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:06,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:06,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255999347] [2021-03-11 14:34:06,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:06,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:06,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:06,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:06,319 INFO L87 Difference]: Start difference. First operand 55 states and 108 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:06,344 INFO L93 Difference]: Finished difference Result 96 states and 154 transitions. [2021-03-11 14:34:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:06,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:06,345 INFO L225 Difference]: With dead ends: 96 [2021-03-11 14:34:06,345 INFO L226 Difference]: Without dead ends: 84 [2021-03-11 14:34:06,345 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:06,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-03-11 14:34:06,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 55. [2021-03-11 14:34:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 54 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 104 transitions. [2021-03-11 14:34:06,346 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 104 transitions. Word has length 16 [2021-03-11 14:34:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:06,346 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 104 transitions. [2021-03-11 14:34:06,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 104 transitions. [2021-03-11 14:34:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:06,346 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:06,346 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:06,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-11 14:34:06,346 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:06,347 INFO L82 PathProgramCache]: Analyzing trace with hash -242128098, now seen corresponding path program 86 times [2021-03-11 14:34:06,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:06,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351914197] [2021-03-11 14:34:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:06,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:06,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:06,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:06,375 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:06,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:06,384 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:06,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:06,396 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:06,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:06,409 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 14:34:06,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351914197] [2021-03-11 14:34:06,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:06,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:06,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911567607] [2021-03-11 14:34:06,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:06,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:06,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:06,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:06,410 INFO L87 Difference]: Start difference. First operand 55 states and 104 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:06,456 INFO L93 Difference]: Finished difference Result 93 states and 145 transitions. [2021-03-11 14:34:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:06,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:06,457 INFO L225 Difference]: With dead ends: 93 [2021-03-11 14:34:06,457 INFO L226 Difference]: Without dead ends: 80 [2021-03-11 14:34:06,457 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 61.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-03-11 14:34:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 51. [2021-03-11 14:34:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.92) internal successors, (96), 50 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 96 transitions. [2021-03-11 14:34:06,458 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 96 transitions. Word has length 16 [2021-03-11 14:34:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:06,458 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 96 transitions. [2021-03-11 14:34:06,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,458 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 96 transitions. [2021-03-11 14:34:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:06,459 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:06,459 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:06,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-11 14:34:06,459 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:06,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash -744544318, now seen corresponding path program 87 times [2021-03-11 14:34:06,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:06,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568828802] [2021-03-11 14:34:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:06,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:06,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:06,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:06,492 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:06,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:06,507 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:06,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:06,522 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:06,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:06,536 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 14:34:06,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568828802] [2021-03-11 14:34:06,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:06,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:06,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443434535] [2021-03-11 14:34:06,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:06,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:06,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:06,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:06,537 INFO L87 Difference]: Start difference. First operand 51 states and 96 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:06,569 INFO L93 Difference]: Finished difference Result 84 states and 128 transitions. [2021-03-11 14:34:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:06,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:06,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:06,569 INFO L225 Difference]: With dead ends: 84 [2021-03-11 14:34:06,570 INFO L226 Difference]: Without dead ends: 72 [2021-03-11 14:34:06,570 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:06,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-03-11 14:34:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 45. [2021-03-11 14:34:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 44 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 84 transitions. [2021-03-11 14:34:06,571 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 84 transitions. Word has length 16 [2021-03-11 14:34:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:06,571 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 84 transitions. [2021-03-11 14:34:06,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 84 transitions. [2021-03-11 14:34:06,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:06,571 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:06,571 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:06,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-11 14:34:06,572 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:06,572 INFO L82 PathProgramCache]: Analyzing trace with hash 686393118, now seen corresponding path program 88 times [2021-03-11 14:34:06,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:06,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268340747] [2021-03-11 14:34:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:06,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:06,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:06,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:06,589 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:06,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:06,604 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:06,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:06,618 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:06,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:06,632 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 14:34:06,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268340747] [2021-03-11 14:34:06,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:06,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:06,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442883461] [2021-03-11 14:34:06,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:06,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:06,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:06,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:06,632 INFO L87 Difference]: Start difference. First operand 45 states and 84 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:06,678 INFO L93 Difference]: Finished difference Result 72 states and 111 transitions. [2021-03-11 14:34:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:06,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:06,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:06,679 INFO L225 Difference]: With dead ends: 72 [2021-03-11 14:34:06,679 INFO L226 Difference]: Without dead ends: 63 [2021-03-11 14:34:06,679 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:06,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-03-11 14:34:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2021-03-11 14:34:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 42 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 14:34:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 80 transitions. [2021-03-11 14:34:06,680 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 80 transitions. Word has length 16 [2021-03-11 14:34:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:06,681 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 80 transitions. [2021-03-11 14:34:06,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,681 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 80 transitions. [2021-03-11 14:34:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:06,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:06,681 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:06,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-11 14:34:06,681 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:06,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:06,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1072524078, now seen corresponding path program 89 times [2021-03-11 14:34:06,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:06,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430183382] [2021-03-11 14:34:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:06,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:06,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:06,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:06,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:06,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:06,717 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:06,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:06,732 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:06,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:06,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430183382] [2021-03-11 14:34:06,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:06,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:06,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640586605] [2021-03-11 14:34:06,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:06,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:06,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:06,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:06,750 INFO L87 Difference]: Start difference. First operand 43 states and 80 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:06,801 INFO L93 Difference]: Finished difference Result 73 states and 113 transitions. [2021-03-11 14:34:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:06,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:06,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:06,802 INFO L225 Difference]: With dead ends: 73 [2021-03-11 14:34:06,802 INFO L226 Difference]: Without dead ends: 64 [2021-03-11 14:34:06,802 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-03-11 14:34:06,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2021-03-11 14:34:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 43 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 81 transitions. [2021-03-11 14:34:06,804 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 81 transitions. Word has length 16 [2021-03-11 14:34:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:06,804 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 81 transitions. [2021-03-11 14:34:06,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 81 transitions. [2021-03-11 14:34:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:06,804 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:06,804 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:06,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-11 14:34:06,804 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:06,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:06,805 INFO L82 PathProgramCache]: Analyzing trace with hash -629764186, now seen corresponding path program 90 times [2021-03-11 14:34:06,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:06,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531435256] [2021-03-11 14:34:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:06,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:06,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:06,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:06,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:06,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:06,833 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:06,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:06,850 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:06,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:06,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531435256] [2021-03-11 14:34:06,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:06,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:06,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624340575] [2021-03-11 14:34:06,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:06,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:06,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:06,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:06,868 INFO L87 Difference]: Start difference. First operand 44 states and 81 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:06,902 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2021-03-11 14:34:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:06,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:06,903 INFO L225 Difference]: With dead ends: 63 [2021-03-11 14:34:06,903 INFO L226 Difference]: Without dead ends: 53 [2021-03-11 14:34:06,903 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-03-11 14:34:06,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2021-03-11 14:34:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.9) internal successors, (76), 40 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 76 transitions. [2021-03-11 14:34:06,904 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 76 transitions. Word has length 16 [2021-03-11 14:34:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:06,904 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 76 transitions. [2021-03-11 14:34:06,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 76 transitions. [2021-03-11 14:34:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:06,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:06,905 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:06,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-11 14:34:06,905 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:06,905 INFO L82 PathProgramCache]: Analyzing trace with hash 382824606, now seen corresponding path program 91 times [2021-03-11 14:34:06,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:06,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816697587] [2021-03-11 14:34:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:06,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:06,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:06,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:06,918 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:06,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:06,925 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:06,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:06,936 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:06,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:06,952 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:06,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:06,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816697587] [2021-03-11 14:34:06,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:06,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:06,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910866069] [2021-03-11 14:34:06,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:06,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:06,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:06,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:06,971 INFO L87 Difference]: Start difference. First operand 41 states and 76 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,017 INFO L93 Difference]: Finished difference Result 74 states and 117 transitions. [2021-03-11 14:34:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,017 INFO L225 Difference]: With dead ends: 74 [2021-03-11 14:34:07,017 INFO L226 Difference]: Without dead ends: 66 [2021-03-11 14:34:07,017 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-03-11 14:34:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 44. [2021-03-11 14:34:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 43 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 14:34:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 82 transitions. [2021-03-11 14:34:07,019 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 82 transitions. Word has length 16 [2021-03-11 14:34:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,019 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 82 transitions. [2021-03-11 14:34:07,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 82 transitions. [2021-03-11 14:34:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,020 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,020 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-11 14:34:07,020 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1241699136, now seen corresponding path program 92 times [2021-03-11 14:34:07,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949130814] [2021-03-11 14:34:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:07,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:07,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:07,034 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:07,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:07,041 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:07,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:07,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:07,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:07,069 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:07,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:07,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949130814] [2021-03-11 14:34:07,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:07,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:07,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619235151] [2021-03-11 14:34:07,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:07,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:07,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:07,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:07,087 INFO L87 Difference]: Start difference. First operand 44 states and 82 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,123 INFO L93 Difference]: Finished difference Result 75 states and 117 transitions. [2021-03-11 14:34:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,123 INFO L225 Difference]: With dead ends: 75 [2021-03-11 14:34:07,123 INFO L226 Difference]: Without dead ends: 64 [2021-03-11 14:34:07,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-03-11 14:34:07,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2021-03-11 14:34:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.9024390243902438) internal successors, (78), 41 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 78 transitions. [2021-03-11 14:34:07,125 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 78 transitions. Word has length 16 [2021-03-11 14:34:07,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,126 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 78 transitions. [2021-03-11 14:34:07,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,126 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 78 transitions. [2021-03-11 14:34:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,126 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-11 14:34:07,126 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,126 INFO L82 PathProgramCache]: Analyzing trace with hash -848504026, now seen corresponding path program 93 times [2021-03-11 14:34:07,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060715591] [2021-03-11 14:34:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:07,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:07,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:07,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:07,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:07,145 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:07,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:07,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:07,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:07,171 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:07,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:07,190 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 14:34:07,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060715591] [2021-03-11 14:34:07,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:07,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:07,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123182547] [2021-03-11 14:34:07,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:07,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:07,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:07,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:07,191 INFO L87 Difference]: Start difference. First operand 42 states and 78 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,235 INFO L93 Difference]: Finished difference Result 70 states and 108 transitions. [2021-03-11 14:34:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,235 INFO L225 Difference]: With dead ends: 70 [2021-03-11 14:34:07,235 INFO L226 Difference]: Without dead ends: 62 [2021-03-11 14:34:07,235 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-03-11 14:34:07,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2021-03-11 14:34:07,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 42 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 79 transitions. [2021-03-11 14:34:07,236 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 79 transitions. Word has length 16 [2021-03-11 14:34:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,236 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 79 transitions. [2021-03-11 14:34:07,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 79 transitions. [2021-03-11 14:34:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,237 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,237 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-11 14:34:07,237 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,237 INFO L82 PathProgramCache]: Analyzing trace with hash -836611106, now seen corresponding path program 94 times [2021-03-11 14:34:07,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511015227] [2021-03-11 14:34:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:07,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:07,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:07,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:07,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:07,255 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:07,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:07,265 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:07,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:07,280 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:07,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:07,296 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 14:34:07,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511015227] [2021-03-11 14:34:07,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:07,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:07,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138635926] [2021-03-11 14:34:07,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:07,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:07,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:07,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:07,297 INFO L87 Difference]: Start difference. First operand 43 states and 79 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,332 INFO L93 Difference]: Finished difference Result 62 states and 99 transitions. [2021-03-11 14:34:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,333 INFO L225 Difference]: With dead ends: 62 [2021-03-11 14:34:07,333 INFO L226 Difference]: Without dead ends: 54 [2021-03-11 14:34:07,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-03-11 14:34:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2021-03-11 14:34:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 41 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 14:34:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 77 transitions. [2021-03-11 14:34:07,334 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 77 transitions. Word has length 16 [2021-03-11 14:34:07,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,334 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 77 transitions. [2021-03-11 14:34:07,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 77 transitions. [2021-03-11 14:34:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,335 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-11 14:34:07,335 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1610379656, now seen corresponding path program 95 times [2021-03-11 14:34:07,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778401893] [2021-03-11 14:34:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:07,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:07,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:07,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:07,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:07,354 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:07,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:07,368 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:07,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:07,385 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:07,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:07,402 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 14:34:07,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778401893] [2021-03-11 14:34:07,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:07,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:07,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826251504] [2021-03-11 14:34:07,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:07,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:07,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:07,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:07,403 INFO L87 Difference]: Start difference. First operand 42 states and 77 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,443 INFO L93 Difference]: Finished difference Result 60 states and 96 transitions. [2021-03-11 14:34:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,444 INFO L225 Difference]: With dead ends: 60 [2021-03-11 14:34:07,444 INFO L226 Difference]: Without dead ends: 51 [2021-03-11 14:34:07,444 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-03-11 14:34:07,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2021-03-11 14:34:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 78 transitions. [2021-03-11 14:34:07,445 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 78 transitions. Word has length 16 [2021-03-11 14:34:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,445 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 78 transitions. [2021-03-11 14:34:07,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 78 transitions. [2021-03-11 14:34:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,446 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-11 14:34:07,446 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,446 INFO L82 PathProgramCache]: Analyzing trace with hash -91908608, now seen corresponding path program 96 times [2021-03-11 14:34:07,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51612830] [2021-03-11 14:34:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:07,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:07,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:07,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:07,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:07,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:07,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:07,480 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:07,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:07,499 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:07,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:07,516 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 14:34:07,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51612830] [2021-03-11 14:34:07,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:07,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:07,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198977437] [2021-03-11 14:34:07,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:07,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:07,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:07,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:07,517 INFO L87 Difference]: Start difference. First operand 43 states and 78 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,548 INFO L93 Difference]: Finished difference Result 50 states and 84 transitions. [2021-03-11 14:34:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,549 INFO L225 Difference]: With dead ends: 50 [2021-03-11 14:34:07,549 INFO L226 Difference]: Without dead ends: 39 [2021-03-11 14:34:07,549 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-03-11 14:34:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-03-11 14:34:07,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.894736842105263) internal successors, (72), 38 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 14:34:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 72 transitions. [2021-03-11 14:34:07,550 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 72 transitions. Word has length 16 [2021-03-11 14:34:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,550 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 72 transitions. [2021-03-11 14:34:07,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,551 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 72 transitions. [2021-03-11 14:34:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,551 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,551 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-11 14:34:07,551 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1788663214, now seen corresponding path program 97 times [2021-03-11 14:34:07,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454947063] [2021-03-11 14:34:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:07,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:07,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:07,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:07,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:07,587 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:07,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:07,603 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:07,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:07,619 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 14:34:07,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454947063] [2021-03-11 14:34:07,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:07,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:07,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30688421] [2021-03-11 14:34:07,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:07,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:07,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:07,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:07,621 INFO L87 Difference]: Start difference. First operand 39 states and 72 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,670 INFO L93 Difference]: Finished difference Result 71 states and 111 transitions. [2021-03-11 14:34:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,671 INFO L225 Difference]: With dead ends: 71 [2021-03-11 14:34:07,671 INFO L226 Difference]: Without dead ends: 61 [2021-03-11 14:34:07,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-03-11 14:34:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2021-03-11 14:34:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.875) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 75 transitions. [2021-03-11 14:34:07,672 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 75 transitions. Word has length 16 [2021-03-11 14:34:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,673 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 75 transitions. [2021-03-11 14:34:07,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 75 transitions. [2021-03-11 14:34:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,673 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,673 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-11 14:34:07,673 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1133534802, now seen corresponding path program 98 times [2021-03-11 14:34:07,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789904097] [2021-03-11 14:34:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:07,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:07,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:07,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:07,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:07,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:07,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:07,724 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:07,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:07,740 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 14:34:07,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789904097] [2021-03-11 14:34:07,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:07,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:07,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670272637] [2021-03-11 14:34:07,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:07,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:07,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:07,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:07,742 INFO L87 Difference]: Start difference. First operand 41 states and 75 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,777 INFO L93 Difference]: Finished difference Result 69 states and 105 transitions. [2021-03-11 14:34:07,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,777 INFO L225 Difference]: With dead ends: 69 [2021-03-11 14:34:07,777 INFO L226 Difference]: Without dead ends: 59 [2021-03-11 14:34:07,777 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-03-11 14:34:07,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2021-03-11 14:34:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 70 transitions. [2021-03-11 14:34:07,778 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 70 transitions. Word has length 16 [2021-03-11 14:34:07,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,779 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 70 transitions. [2021-03-11 14:34:07,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,779 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 70 transitions. [2021-03-11 14:34:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,779 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,780 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-11 14:34:07,780 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1650997428, now seen corresponding path program 99 times [2021-03-11 14:34:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295624179] [2021-03-11 14:34:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:07,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:07,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:07,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:07,798 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:07,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:07,808 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:07,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:07,822 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:07,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:07,837 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 14:34:07,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295624179] [2021-03-11 14:34:07,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:07,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:07,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470283773] [2021-03-11 14:34:07,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:07,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:07,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:07,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:07,838 INFO L87 Difference]: Start difference. First operand 39 states and 70 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,881 INFO L93 Difference]: Finished difference Result 73 states and 114 transitions. [2021-03-11 14:34:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,881 INFO L225 Difference]: With dead ends: 73 [2021-03-11 14:34:07,881 INFO L226 Difference]: Without dead ends: 63 [2021-03-11 14:34:07,882 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-03-11 14:34:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 42. [2021-03-11 14:34:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.829268292682927) internal successors, (75), 41 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 75 transitions. [2021-03-11 14:34:07,887 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 75 transitions. Word has length 16 [2021-03-11 14:34:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,887 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 75 transitions. [2021-03-11 14:34:07,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 75 transitions. [2021-03-11 14:34:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,888 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,888 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-11 14:34:07,888 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1857483946, now seen corresponding path program 100 times [2021-03-11 14:34:07,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857143440] [2021-03-11 14:34:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:07,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:07,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:07,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:07,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:07,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:07,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:07,918 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:07,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:07,933 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:07,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:07,947 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 14:34:07,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857143440] [2021-03-11 14:34:07,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:07,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:07,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064627540] [2021-03-11 14:34:07,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:07,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:07,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:07,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:07,948 INFO L87 Difference]: Start difference. First operand 42 states and 75 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:07,992 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2021-03-11 14:34:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:07,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:07,992 INFO L225 Difference]: With dead ends: 72 [2021-03-11 14:34:07,992 INFO L226 Difference]: Without dead ends: 60 [2021-03-11 14:34:07,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-03-11 14:34:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-03-11 14:34:07,993 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 14:34:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 68 transitions. [2021-03-11 14:34:07,994 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 68 transitions. Word has length 16 [2021-03-11 14:34:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:07,994 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 68 transitions. [2021-03-11 14:34:07,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 68 transitions. [2021-03-11 14:34:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:07,994 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:07,994 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:07,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-11 14:34:07,994 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:07,995 INFO L82 PathProgramCache]: Analyzing trace with hash 577078506, now seen corresponding path program 101 times [2021-03-11 14:34:07,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:07,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21520927] [2021-03-11 14:34:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,013 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:08,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:08,024 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:08,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:08,038 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,050 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 14:34:08,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21520927] [2021-03-11 14:34:08,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269441725] [2021-03-11 14:34:08,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,051 INFO L87 Difference]: Start difference. First operand 39 states and 68 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,084 INFO L93 Difference]: Finished difference Result 68 states and 101 transitions. [2021-03-11 14:34:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,085 INFO L225 Difference]: With dead ends: 68 [2021-03-11 14:34:08,085 INFO L226 Difference]: Without dead ends: 60 [2021-03-11 14:34:08,085 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-03-11 14:34:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 41. [2021-03-11 14:34:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 71 transitions. [2021-03-11 14:34:08,086 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 71 transitions. Word has length 16 [2021-03-11 14:34:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,086 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 71 transitions. [2021-03-11 14:34:08,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 71 transitions. [2021-03-11 14:34:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,086 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,086 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-11 14:34:08,086 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1435953036, now seen corresponding path program 102 times [2021-03-11 14:34:08,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985983644] [2021-03-11 14:34:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:08,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:08,114 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:08,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:08,129 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,146 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 14:34:08,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985983644] [2021-03-11 14:34:08,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131131175] [2021-03-11 14:34:08,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,147 INFO L87 Difference]: Start difference. First operand 41 states and 71 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,191 INFO L93 Difference]: Finished difference Result 69 states and 101 transitions. [2021-03-11 14:34:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,192 INFO L225 Difference]: With dead ends: 69 [2021-03-11 14:34:08,192 INFO L226 Difference]: Without dead ends: 56 [2021-03-11 14:34:08,192 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-03-11 14:34:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2021-03-11 14:34:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 64 transitions. [2021-03-11 14:34:08,193 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 64 transitions. Word has length 16 [2021-03-11 14:34:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,193 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 64 transitions. [2021-03-11 14:34:08,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 64 transitions. [2021-03-11 14:34:08,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,193 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,193 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-11 14:34:08,193 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2022786010, now seen corresponding path program 103 times [2021-03-11 14:34:08,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951217437] [2021-03-11 14:34:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:08,223 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:08,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:08,239 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,254 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 14:34:08,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951217437] [2021-03-11 14:34:08,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346905770] [2021-03-11 14:34:08,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,255 INFO L87 Difference]: Start difference. First operand 37 states and 64 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,298 INFO L93 Difference]: Finished difference Result 67 states and 98 transitions. [2021-03-11 14:34:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,299 INFO L225 Difference]: With dead ends: 67 [2021-03-11 14:34:08,299 INFO L226 Difference]: Without dead ends: 57 [2021-03-11 14:34:08,299 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-03-11 14:34:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 37. [2021-03-11 14:34:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 36 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2021-03-11 14:34:08,300 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 16 [2021-03-11 14:34:08,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,300 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2021-03-11 14:34:08,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2021-03-11 14:34:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,301 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,301 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-11 14:34:08,301 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,301 INFO L82 PathProgramCache]: Analyzing trace with hash -650016730, now seen corresponding path program 104 times [2021-03-11 14:34:08,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341674356] [2021-03-11 14:34:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:34:08,327 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:08,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:08,341 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:08,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341674356] [2021-03-11 14:34:08,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113815874] [2021-03-11 14:34:08,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,357 INFO L87 Difference]: Start difference. First operand 37 states and 62 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,393 INFO L93 Difference]: Finished difference Result 65 states and 92 transitions. [2021-03-11 14:34:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,393 INFO L225 Difference]: With dead ends: 65 [2021-03-11 14:34:08,393 INFO L226 Difference]: Without dead ends: 55 [2021-03-11 14:34:08,393 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-03-11 14:34:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2021-03-11 14:34:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 34 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 58 transitions. [2021-03-11 14:34:08,394 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 58 transitions. Word has length 16 [2021-03-11 14:34:08,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,394 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 58 transitions. [2021-03-11 14:34:08,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,395 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2021-03-11 14:34:08,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,395 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,395 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-11 14:34:08,395 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1654105490, now seen corresponding path program 105 times [2021-03-11 14:34:08,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654116017] [2021-03-11 14:34:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,413 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:08,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:08,429 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:08,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:08,441 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:08,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654116017] [2021-03-11 14:34:08,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652058683] [2021-03-11 14:34:08,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,454 INFO L87 Difference]: Start difference. First operand 35 states and 58 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,489 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2021-03-11 14:34:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,489 INFO L225 Difference]: With dead ends: 61 [2021-03-11 14:34:08,489 INFO L226 Difference]: Without dead ends: 51 [2021-03-11 14:34:08,489 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-03-11 14:34:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2021-03-11 14:34:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 59 transitions. [2021-03-11 14:34:08,491 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 59 transitions. Word has length 16 [2021-03-11 14:34:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,491 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 59 transitions. [2021-03-11 14:34:08,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 59 transitions. [2021-03-11 14:34:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,492 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,492 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-11 14:34:08,492 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,492 INFO L82 PathProgramCache]: Analyzing trace with hash 585863364, now seen corresponding path program 106 times [2021-03-11 14:34:08,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506159921] [2021-03-11 14:34:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,512 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:08,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:08,528 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:08,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:08,547 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,559 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 14:34:08,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506159921] [2021-03-11 14:34:08,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323762475] [2021-03-11 14:34:08,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,560 INFO L87 Difference]: Start difference. First operand 36 states and 59 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,591 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2021-03-11 14:34:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,591 INFO L225 Difference]: With dead ends: 51 [2021-03-11 14:34:08,591 INFO L226 Difference]: Without dead ends: 43 [2021-03-11 14:34:08,591 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-03-11 14:34:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2021-03-11 14:34:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 57 transitions. [2021-03-11 14:34:08,592 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 57 transitions. Word has length 16 [2021-03-11 14:34:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,592 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 57 transitions. [2021-03-11 14:34:08,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 57 transitions. [2021-03-11 14:34:08,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,593 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,593 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-11 14:34:08,593 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1318672942, now seen corresponding path program 107 times [2021-03-11 14:34:08,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509394723] [2021-03-11 14:34:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,610 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:08,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:08,619 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:08,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:08,634 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,646 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 14:34:08,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509394723] [2021-03-11 14:34:08,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950781384] [2021-03-11 14:34:08,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,647 INFO L87 Difference]: Start difference. First operand 35 states and 57 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,683 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2021-03-11 14:34:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,684 INFO L225 Difference]: With dead ends: 59 [2021-03-11 14:34:08,684 INFO L226 Difference]: Without dead ends: 51 [2021-03-11 14:34:08,684 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-03-11 14:34:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2021-03-11 14:34:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 58 transitions. [2021-03-11 14:34:08,685 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 58 transitions. Word has length 16 [2021-03-11 14:34:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,685 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 58 transitions. [2021-03-11 14:34:08,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 58 transitions. [2021-03-11 14:34:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,685 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,685 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-11 14:34:08,685 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1330565862, now seen corresponding path program 108 times [2021-03-11 14:34:08,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394929314] [2021-03-11 14:34:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:08,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:08,713 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:08,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:08,728 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:08,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394929314] [2021-03-11 14:34:08,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821162497] [2021-03-11 14:34:08,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,744 INFO L87 Difference]: Start difference. First operand 36 states and 58 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,772 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2021-03-11 14:34:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,773 INFO L225 Difference]: With dead ends: 51 [2021-03-11 14:34:08,773 INFO L226 Difference]: Without dead ends: 42 [2021-03-11 14:34:08,773 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-03-11 14:34:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-03-11 14:34:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 55 transitions. [2021-03-11 14:34:08,774 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 55 transitions. Word has length 16 [2021-03-11 14:34:08,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,774 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 55 transitions. [2021-03-11 14:34:08,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,774 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 55 transitions. [2021-03-11 14:34:08,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,774 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,774 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-11 14:34:08,775 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1188164100, now seen corresponding path program 109 times [2021-03-11 14:34:08,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839483040] [2021-03-11 14:34:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:08,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:08,803 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:08,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:08,817 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:08,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839483040] [2021-03-11 14:34:08,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057184586] [2021-03-11 14:34:08,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,830 INFO L87 Difference]: Start difference. First operand 34 states and 55 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,865 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2021-03-11 14:34:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,865 INFO L225 Difference]: With dead ends: 61 [2021-03-11 14:34:08,865 INFO L226 Difference]: Without dead ends: 51 [2021-03-11 14:34:08,865 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-03-11 14:34:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2021-03-11 14:34:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2021-03-11 14:34:08,866 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 16 [2021-03-11 14:34:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,866 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2021-03-11 14:34:08,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2021-03-11 14:34:08,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,866 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-11 14:34:08,866 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,866 INFO L82 PathProgramCache]: Analyzing trace with hash 401678178, now seen corresponding path program 110 times [2021-03-11 14:34:08,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927011778] [2021-03-11 14:34:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:08,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:08,895 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:08,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:08,909 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:08,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:08,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927011778] [2021-03-11 14:34:08,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:08,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:08,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936244767] [2021-03-11 14:34:08,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:08,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:08,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:08,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:08,924 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:08,957 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2021-03-11 14:34:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:08,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:08,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:08,957 INFO L225 Difference]: With dead ends: 60 [2021-03-11 14:34:08,957 INFO L226 Difference]: Without dead ends: 48 [2021-03-11 14:34:08,957 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-03-11 14:34:08,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2021-03-11 14:34:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2021-03-11 14:34:08,958 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 46 transitions. Word has length 16 [2021-03-11 14:34:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:08,958 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 46 transitions. [2021-03-11 14:34:08,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 46 transitions. [2021-03-11 14:34:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:08,958 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:08,959 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:08,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-11 14:34:08,959 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:08,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:08,959 INFO L82 PathProgramCache]: Analyzing trace with hash -43164532, now seen corresponding path program 111 times [2021-03-11 14:34:08,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:08,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540028315] [2021-03-11 14:34:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:08,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:08,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:08,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:08,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:08,973 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:08,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:08,990 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:08,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:09,002 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,015 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 14:34:09,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540028315] [2021-03-11 14:34:09,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844460327] [2021-03-11 14:34:09,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,016 INFO L87 Difference]: Start difference. First operand 31 states and 46 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,062 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2021-03-11 14:34:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,063 INFO L225 Difference]: With dead ends: 52 [2021-03-11 14:34:09,063 INFO L226 Difference]: Without dead ends: 42 [2021-03-11 14:34:09,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-03-11 14:34:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 27. [2021-03-11 14:34:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2021-03-11 14:34:09,064 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 16 [2021-03-11 14:34:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,064 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2021-03-11 14:34:09,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2021-03-11 14:34:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:09,064 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:09,064 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:09,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-11 14:34:09,064 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:09,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:09,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2098162974, now seen corresponding path program 112 times [2021-03-11 14:34:09,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:09,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335921506] [2021-03-11 14:34:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:09,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:09,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:09,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:09,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:34:09,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:34:09,106 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:09,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:09,122 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,137 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 14:34:09,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335921506] [2021-03-11 14:34:09,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47118042] [2021-03-11 14:34:09,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,138 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,167 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-03-11 14:34:09,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,168 INFO L225 Difference]: With dead ends: 42 [2021-03-11 14:34:09,168 INFO L226 Difference]: Without dead ends: 34 [2021-03-11 14:34:09,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-03-11 14:34:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2021-03-11 14:34:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2021-03-11 14:34:09,169 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 16 [2021-03-11 14:34:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,169 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2021-03-11 14:34:09,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,169 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2021-03-11 14:34:09,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:09,169 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:09,170 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:09,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-11 14:34:09,170 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:09,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1093530286, now seen corresponding path program 113 times [2021-03-11 14:34:09,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:09,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897207583] [2021-03-11 14:34:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:09,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:09,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:09,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:09,188 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:09,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:09,200 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:09,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:09,216 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,232 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 14:34:09,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897207583] [2021-03-11 14:34:09,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862434736] [2021-03-11 14:34:09,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,233 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,271 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-03-11 14:34:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,272 INFO L225 Difference]: With dead ends: 44 [2021-03-11 14:34:09,272 INFO L226 Difference]: Without dead ends: 35 [2021-03-11 14:34:09,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-03-11 14:34:09,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2021-03-11 14:34:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-03-11 14:34:09,273 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 16 [2021-03-11 14:34:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,273 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-03-11 14:34:09,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-03-11 14:34:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:09,273 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:09,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:09,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-11 14:34:09,273 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:09,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:09,273 INFO L82 PathProgramCache]: Analyzing trace with hash -608757978, now seen corresponding path program 114 times [2021-03-11 14:34:09,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:09,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851476290] [2021-03-11 14:34:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:09,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:09,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:09,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:34:09,292 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:09,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:09,303 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:09,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:09,320 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:09,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851476290] [2021-03-11 14:34:09,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834082087] [2021-03-11 14:34:09,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,337 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,363 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2021-03-11 14:34:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,364 INFO L225 Difference]: With dead ends: 34 [2021-03-11 14:34:09,364 INFO L226 Difference]: Without dead ends: 25 [2021-03-11 14:34:09,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-03-11 14:34:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-03-11 14:34:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2021-03-11 14:34:09,365 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 16 [2021-03-11 14:34:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,365 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2021-03-11 14:34:09,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2021-03-11 14:34:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:09,365 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:09,365 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:09,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-11 14:34:09,365 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:09,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:09,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1476916194, now seen corresponding path program 115 times [2021-03-11 14:34:09,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:09,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514503186] [2021-03-11 14:34:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:09,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:09,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:09,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:09,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:09,385 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:09,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:09,396 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:09,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:09,412 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:09,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514503186] [2021-03-11 14:34:09,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993138783] [2021-03-11 14:34:09,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,429 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,467 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2021-03-11 14:34:09,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,467 INFO L225 Difference]: With dead ends: 40 [2021-03-11 14:34:09,467 INFO L226 Difference]: Without dead ends: 32 [2021-03-11 14:34:09,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-03-11 14:34:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2021-03-11 14:34:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-03-11 14:34:09,468 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 16 [2021-03-11 14:34:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,468 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-03-11 14:34:09,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-03-11 14:34:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:09,469 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:09,469 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:09,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-11 14:34:09,469 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:09,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:09,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1959176572, now seen corresponding path program 116 times [2021-03-11 14:34:09,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:09,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793266192] [2021-03-11 14:34:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:09,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:09,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:09,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:09,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:09,490 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:09,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:09,501 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:09,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:09,517 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,532 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 14:34:09,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793266192] [2021-03-11 14:34:09,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73402086] [2021-03-11 14:34:09,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,533 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,571 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-03-11 14:34:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,571 INFO L225 Difference]: With dead ends: 41 [2021-03-11 14:34:09,571 INFO L226 Difference]: Without dead ends: 30 [2021-03-11 14:34:09,572 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-03-11 14:34:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2021-03-11 14:34:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-03-11 14:34:09,572 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2021-03-11 14:34:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,573 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-03-11 14:34:09,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,573 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-03-11 14:34:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:09,573 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:09,573 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:09,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-11 14:34:09,587 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:09,587 INFO L82 PathProgramCache]: Analyzing trace with hash 245587562, now seen corresponding path program 117 times [2021-03-11 14:34:09,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:09,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548154608] [2021-03-11 14:34:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:09,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:09,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:09,600 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:09,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:09,607 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:09,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:09,619 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:09,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:09,635 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,650 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 14:34:09,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548154608] [2021-03-11 14:34:09,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448908064] [2021-03-11 14:34:09,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,651 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,689 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-03-11 14:34:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,689 INFO L225 Difference]: With dead ends: 36 [2021-03-11 14:34:09,689 INFO L226 Difference]: Without dead ends: 28 [2021-03-11 14:34:09,689 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-03-11 14:34:09,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2021-03-11 14:34:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-03-11 14:34:09,690 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 16 [2021-03-11 14:34:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,690 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-03-11 14:34:09,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,690 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-03-11 14:34:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:09,691 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:09,691 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:09,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-11 14:34:09,691 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:09,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:09,691 INFO L82 PathProgramCache]: Analyzing trace with hash 257480482, now seen corresponding path program 118 times [2021-03-11 14:34:09,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:09,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874967361] [2021-03-11 14:34:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:09,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:09,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:09,703 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:09,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:09,710 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:34:09,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:34:09,722 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:09,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:09,738 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,750 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 14:34:09,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874967361] [2021-03-11 14:34:09,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227872140] [2021-03-11 14:34:09,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,751 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,773 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-03-11 14:34:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,774 INFO L225 Difference]: With dead ends: 28 [2021-03-11 14:34:09,774 INFO L226 Difference]: Without dead ends: 20 [2021-03-11 14:34:09,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-03-11 14:34:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-03-11 14:34:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-03-11 14:34:09,774 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2021-03-11 14:34:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,774 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-03-11 14:34:09,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-03-11 14:34:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:09,775 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:09,775 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:09,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-11 14:34:09,775 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:09,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:09,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1590496052, now seen corresponding path program 119 times [2021-03-11 14:34:09,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:09,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584929581] [2021-03-11 14:34:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:09,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:09,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:09,786 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:09,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:09,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:09,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:09,804 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:34:09,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:34:09,816 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:34:09,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584929581] [2021-03-11 14:34:09,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177313115] [2021-03-11 14:34:09,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,829 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,857 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-03-11 14:34:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,858 INFO L225 Difference]: With dead ends: 26 [2021-03-11 14:34:09,858 INFO L226 Difference]: Without dead ends: 17 [2021-03-11 14:34:09,859 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-03-11 14:34:09,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-03-11 14:34:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-03-11 14:34:09,859 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 16 [2021-03-11 14:34:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,859 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-03-11 14:34:09,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-03-11 14:34:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 14:34:09,859 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:34:09,859 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:34:09,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-11 14:34:09,859 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:34:09,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:34:09,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1002182980, now seen corresponding path program 120 times [2021-03-11 14:34:09,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:34:09,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552933565] [2021-03-11 14:34:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:34:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:34:09,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:34:09,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:34:09,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:34:09,872 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 14:34:09,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 14:34:09,878 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:34:09,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:34:09,887 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:34:09,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:34:09,907 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 14:34:09,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:34:09,922 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 14:34:09,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552933565] [2021-03-11 14:34:09,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:34:09,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:34:09,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723539413] [2021-03-11 14:34:09,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:34:09,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:34:09,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:34:09,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:34:09,923 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:34:09,940 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-03-11 14:34:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:34:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 14:34:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:34:09,940 INFO L225 Difference]: With dead ends: 16 [2021-03-11 14:34:09,940 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 14:34:09,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:34:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 14:34:09,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 14:34:09,941 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 14:34:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 14:34:09,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-03-11 14:34:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:34:09,941 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 14:34:09,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:34:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 14:34:09,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 14:34:09,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-11 14:34:09,943 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:34:09 BasicIcfg [2021-03-11 14:34:09,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:34:09,944 INFO L168 Benchmark]: Toolchain (without parser) took 15294.98 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 236.7 MB in the beginning and 343.6 MB in the end (delta: -106.9 MB). Peak memory consumption was 96.8 MB. Max. memory is 16.0 GB. [2021-03-11 14:34:09,944 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:34:09,944 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.32 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 14:34:09,944 INFO L168 Benchmark]: Boogie Preprocessor took 10.12 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.9 MB in the end (delta: 883.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:34:09,944 INFO L168 Benchmark]: RCFGBuilder took 215.30 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 240.5 MB in the end (delta: -6.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:34:09,944 INFO L168 Benchmark]: TraceAbstraction took 15030.62 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 239.9 MB in the beginning and 343.6 MB in the end (delta: -103.7 MB). Peak memory consumption was 98.2 MB. Max. memory is 16.0 GB. [2021-03-11 14:34:09,944 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 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.32 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 10.12 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.9 MB in the end (delta: 883.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 215.30 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 240.5 MB in the end (delta: -6.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 15030.62 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 239.9 MB in the beginning and 343.6 MB in the end (delta: -103.7 MB). Peak memory consumption was 98.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 171.7ms, 44 PlacesBefore, 38 PlacesAfterwards, 48 TransitionsBefore, 42 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 1330 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1330, positive: 1330, positive conditional: 0, positive unconditional: 1330, 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: 260, positive: 260, positive conditional: 0, positive unconditional: 260, 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: 260, positive: 260, positive conditional: 0, positive unconditional: 260, 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: 1330, positive: 1070, positive conditional: 0, positive unconditional: 1070, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 260, unknown conditional: 0, unknown unconditional: 260] , Statistics on independence cache: Total cache size (in pairs): 110, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 23]: 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 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14886.6ms, OverallIterations: 124, TraceHistogramMax: 1, EmptinessCheckTime: 60.1ms, AutomataDifference: 5235.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 222.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4449 SDtfs, 7679 SDslu, 7067 SDs, 0 SdLazy, 2428 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1575.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 724 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 8769.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=0, InterpolantAutomatonStates: 852, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 356.6ms AutomataMinimizationTime, 124 MinimizatonAttempts, 4280 StatesRemovedByMinimization, 115 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.5ms SsaConstructionTime, 160.5ms SatisfiabilityAnalysisTime, 8253.4ms InterpolantComputationTime, 1984 NumberOfCodeBlocks, 1984 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1860 ConstructedInterpolants, 0 QuantifiedInterpolants, 32984 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 124 InterpolantComputations, 124 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...