/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:58:28,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:58:28,188 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 19:58:28,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:58:28,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:58:28,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:58:28,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:58:28,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:58:28,214 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:58:28,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:58:28,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:58:28,218 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:58:28,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:58:28,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:58:28,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:58:28,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:58:28,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:58:28,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:58:28,219 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:58:28,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:58:28,220 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:58:28,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:58:28,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:58:28,221 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:58:28,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:58:28,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:58:28,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:58:28,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:58:28,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:58:28,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:58:28,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:58:28,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:58:28,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:58:28,222 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:58:28,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:58:28,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:58:28,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:58:28,424 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:58:28,424 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:58:28,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-11-29 19:58:29,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:58:29,624 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:58:29,624 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-11-29 19:58:29,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2edc9c816/266d6580992b48138a1050fcb8036e21/FLAG0ad1af94e [2023-11-29 19:58:29,656 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2edc9c816/266d6580992b48138a1050fcb8036e21 [2023-11-29 19:58:29,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:58:29,658 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:58:29,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:58:29,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:58:29,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:58:29,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:58:29" (1/1) ... [2023-11-29 19:58:29,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5aeca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:29, skipping insertion in model container [2023-11-29 19:58:29,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:58:29" (1/1) ... [2023-11-29 19:58:29,706 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:58:29,986 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2023-11-29 19:58:30,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:58:30,014 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:58:30,053 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2023-11-29 19:58:30,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:58:30,127 WARN L675 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:58:30,133 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:58:30,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30 WrapperNode [2023-11-29 19:58:30,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:58:30,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:58:30,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:58:30,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:58:30,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,169 INFO L138 Inliner]: procedures = 274, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-29 19:58:30,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:58:30,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:58:30,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:58:30,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:58:30,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,197 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:58:30,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:58:30,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:58:30,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:58:30,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (1/1) ... [2023-11-29 19:58:30,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:58:30,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:58:30,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 19:58:30,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 19:58:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:58:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:58:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 19:58:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 19:58:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:58:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 19:58:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:58:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 19:58:30,295 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 19:58:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:58:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:58:30,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:58:30,297 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:58:30,409 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:58:30,410 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:58:30,571 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:58:30,597 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:58:30,597 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-29 19:58:30,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:58:30 BoogieIcfgContainer [2023-11-29 19:58:30,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:58:30,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:58:30,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:58:30,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:58:30,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:58:29" (1/3) ... [2023-11-29 19:58:30,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af12761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:58:30, skipping insertion in model container [2023-11-29 19:58:30,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:30" (2/3) ... [2023-11-29 19:58:30,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af12761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:58:30, skipping insertion in model container [2023-11-29 19:58:30,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:58:30" (3/3) ... [2023-11-29 19:58:30,603 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-11-29 19:58:30,614 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:58:30,614 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 19:58:30,614 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:58:30,664 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 19:58:30,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 131 transitions, 269 flow [2023-11-29 19:58:30,730 INFO L124 PetriNetUnfolderBase]: 17/176 cut-off events. [2023-11-29 19:58:30,731 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:58:30,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 17/176 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 439 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-11-29 19:58:30,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 131 transitions, 269 flow [2023-11-29 19:58:30,738 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 256 flow [2023-11-29 19:58:30,745 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:58:30,749 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c182f1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:58:30,749 INFO L363 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 19:58:30,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:58:30,765 INFO L124 PetriNetUnfolderBase]: 3/88 cut-off events. [2023-11-29 19:58:30,765 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:58:30,765 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:58:30,766 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:58:30,766 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:58:30,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:58:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash 270595860, now seen corresponding path program 1 times [2023-11-29 19:58:30,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:58:30,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6636533] [2023-11-29 19:58:30,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:58:30,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:58:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:58:30,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:58:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:58:30,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:58:30,964 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:58:30,965 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-29 19:58:30,966 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 19:58:30,966 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:58:30,967 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 19:58:30,977 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:58:30,977 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 19:58:31,003 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 19:58:31,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 174 transitions, 364 flow [2023-11-29 19:58:31,063 INFO L124 PetriNetUnfolderBase]: 31/290 cut-off events. [2023-11-29 19:58:31,063 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 19:58:31,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 942 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 178. Up to 8 conditions per place. [2023-11-29 19:58:31,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 174 transitions, 364 flow [2023-11-29 19:58:31,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 174 transitions, 364 flow [2023-11-29 19:58:31,073 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:58:31,074 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c182f1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:58:31,074 INFO L363 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 19:58:31,083 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:58:31,083 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-11-29 19:58:31,084 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:58:31,084 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:58:31,084 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:58:31,084 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:58:31,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:58:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash -605133248, now seen corresponding path program 1 times [2023-11-29 19:58:31,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:58:31,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213298342] [2023-11-29 19:58:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:58:31,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:58:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:58:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:58:31,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:58:31,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213298342] [2023-11-29 19:58:31,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213298342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:58:31,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:58:31,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:58:31,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296178344] [2023-11-29 19:58:31,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:58:31,284 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:58:31,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:58:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:58:31,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:58:31,312 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 174 [2023-11-29 19:58:31,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 174 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:31,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:58:31,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 174 [2023-11-29 19:58:31,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:58:32,048 INFO L124 PetriNetUnfolderBase]: 2082/6796 cut-off events. [2023-11-29 19:58:32,049 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-29 19:58:32,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10215 conditions, 6796 events. 2082/6796 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 64992 event pairs, 960 based on Foata normal form. 1320/7673 useless extension candidates. Maximal degree in co-relation 1038. Up to 3338 conditions per place. [2023-11-29 19:58:32,082 INFO L140 encePairwiseOnDemand]: 154/174 looper letters, 40 selfloop transitions, 2 changer transitions 22/168 dead transitions. [2023-11-29 19:58:32,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 168 transitions, 446 flow [2023-11-29 19:58:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 19:58:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 19:58:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-29 19:58:32,095 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2023-11-29 19:58:32,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-29 19:58:32,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-29 19:58:32,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:58:32,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-29 19:58:32,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:32,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:32,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:32,112 INFO L307 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2023-11-29 19:58:32,113 INFO L500 AbstractCegarLoop]: Abstraction has has 161 places, 168 transitions, 446 flow [2023-11-29 19:58:32,113 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:32,113 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:58:32,114 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:58:32,114 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:58:32,114 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:58:32,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:58:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1259264640, now seen corresponding path program 1 times [2023-11-29 19:58:32,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:58:32,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331991392] [2023-11-29 19:58:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:58:32,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:58:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:58:32,154 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:58:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:58:32,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:58:32,172 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:58:32,172 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-29 19:58:32,172 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 19:58:32,173 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:58:32,173 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 19:58:32,173 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:58:32,173 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 19:58:32,207 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 19:58:32,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 217 transitions, 461 flow [2023-11-29 19:58:32,249 INFO L124 PetriNetUnfolderBase]: 50/439 cut-off events. [2023-11-29 19:58:32,250 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 19:58:32,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 439 events. 50/439 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1639 event pairs, 1 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-11-29 19:58:32,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 217 transitions, 461 flow [2023-11-29 19:58:32,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 217 transitions, 461 flow [2023-11-29 19:58:32,258 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:58:32,261 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c182f1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:58:32,261 INFO L363 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 19:58:32,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:58:32,278 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-11-29 19:58:32,278 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:58:32,278 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:58:32,278 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:58:32,279 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:58:32,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:58:32,279 INFO L85 PathProgramCache]: Analyzing trace with hash -913384423, now seen corresponding path program 1 times [2023-11-29 19:58:32,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:58:32,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563500334] [2023-11-29 19:58:32,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:58:32,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:58:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:58:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:58:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:58:32,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563500334] [2023-11-29 19:58:32,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563500334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:58:32,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:58:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:58:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864148246] [2023-11-29 19:58:32,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:58:32,376 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:58:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:58:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:58:32,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:58:32,377 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 217 [2023-11-29 19:58:32,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 217 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:32,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:58:32,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 217 [2023-11-29 19:58:32,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:58:40,280 INFO L124 PetriNetUnfolderBase]: 29495/77286 cut-off events. [2023-11-29 19:58:40,281 INFO L125 PetriNetUnfolderBase]: For 1395/1395 co-relation queries the response was YES. [2023-11-29 19:58:40,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119271 conditions, 77286 events. 29495/77286 cut-off events. For 1395/1395 co-relation queries the response was YES. Maximal size of possible extension queue 1671. Compared 984328 event pairs, 24181 based on Foata normal form. 17552/93079 useless extension candidates. Maximal degree in co-relation 10712. Up to 41299 conditions per place. [2023-11-29 19:58:40,723 INFO L140 encePairwiseOnDemand]: 191/217 looper letters, 49 selfloop transitions, 2 changer transitions 23/205 dead transitions. [2023-11-29 19:58:40,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 205 transitions, 551 flow [2023-11-29 19:58:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 19:58:40,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 19:58:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-11-29 19:58:40,725 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8172043010752689 [2023-11-29 19:58:40,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-11-29 19:58:40,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-11-29 19:58:40,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:58:40,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-11-29 19:58:40,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:40,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:40,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:40,732 INFO L307 CegarLoopForPetriNet]: 198 programPoint places, 1 predicate places. [2023-11-29 19:58:40,733 INFO L500 AbstractCegarLoop]: Abstraction has has 199 places, 205 transitions, 551 flow [2023-11-29 19:58:40,733 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:40,733 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:58:40,733 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:58:40,733 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:58:40,733 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:58:40,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:58:40,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1314046345, now seen corresponding path program 1 times [2023-11-29 19:58:40,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:58:40,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691263344] [2023-11-29 19:58:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:58:40,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:58:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:58:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:58:40,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:58:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691263344] [2023-11-29 19:58:40,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691263344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:58:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799654121] [2023-11-29 19:58:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:58:40,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:58:40,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:58:40,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:58:40,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 19:58:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:58:40,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 19:58:40,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:58:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:58:41,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:58:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:58:41,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799654121] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:58:41,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:58:41,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 19:58:41,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565626794] [2023-11-29 19:58:41,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:58:41,083 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 19:58:41,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:58:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 19:58:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 19:58:41,086 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 217 [2023-11-29 19:58:41,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 205 transitions, 551 flow. Second operand has 10 states, 10 states have (on average 149.8) internal successors, (1498), 10 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:41,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:58:41,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 217 [2023-11-29 19:58:41,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:58:48,073 INFO L124 PetriNetUnfolderBase]: 30285/72197 cut-off events. [2023-11-29 19:58:48,073 INFO L125 PetriNetUnfolderBase]: For 14708/21927 co-relation queries the response was YES. [2023-11-29 19:58:48,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156649 conditions, 72197 events. 30285/72197 cut-off events. For 14708/21927 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 845742 event pairs, 1973 based on Foata normal form. 6/68331 useless extension candidates. Maximal degree in co-relation 13558. Up to 41459 conditions per place. [2023-11-29 19:58:48,496 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 138 selfloop transitions, 9 changer transitions 23/300 dead transitions. [2023-11-29 19:58:48,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 300 transitions, 1233 flow [2023-11-29 19:58:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:58:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:58:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1478 transitions. [2023-11-29 19:58:48,498 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.756784434203789 [2023-11-29 19:58:48,498 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1478 transitions. [2023-11-29 19:58:48,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1478 transitions. [2023-11-29 19:58:48,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:58:48,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1478 transitions. [2023-11-29 19:58:48,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.22222222222223) internal successors, (1478), 9 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:48,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:48,504 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:48,506 INFO L307 CegarLoopForPetriNet]: 198 programPoint places, 9 predicate places. [2023-11-29 19:58:48,506 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 300 transitions, 1233 flow [2023-11-29 19:58:48,507 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 149.8) internal successors, (1498), 10 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:48,507 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:58:48,507 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:58:48,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 19:58:48,712 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:58:48,713 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:58:48,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:58:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2021067391, now seen corresponding path program 1 times [2023-11-29 19:58:48,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:58:48,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037863335] [2023-11-29 19:58:48,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:58:48,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:58:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:58:48,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:58:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:58:48,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:58:48,763 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:58:48,763 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-29 19:58:48,763 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 19:58:48,763 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 19:58:48,764 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 19:58:48,764 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:58:48,764 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 19:58:48,794 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 19:58:48,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 260 transitions, 560 flow [2023-11-29 19:58:48,845 INFO L124 PetriNetUnfolderBase]: 81/660 cut-off events. [2023-11-29 19:58:48,846 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-29 19:58:48,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 660 events. 81/660 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2748 event pairs, 6 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 459. Up to 32 conditions per place. [2023-11-29 19:58:48,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 260 transitions, 560 flow [2023-11-29 19:58:48,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 260 transitions, 560 flow [2023-11-29 19:58:48,858 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:58:48,860 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c182f1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:58:48,861 INFO L363 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 19:58:48,864 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:58:48,864 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-11-29 19:58:48,864 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:58:48,864 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:58:48,864 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:58:48,866 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:58:48,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:58:48,866 INFO L85 PathProgramCache]: Analyzing trace with hash -134754019, now seen corresponding path program 1 times [2023-11-29 19:58:48,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:58:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619576916] [2023-11-29 19:58:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:58:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:58:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:58:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:58:48,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:58:48,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619576916] [2023-11-29 19:58:48,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619576916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:58:48,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:58:48,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:58:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068763148] [2023-11-29 19:58:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:58:48,906 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:58:48,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:58:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:58:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:58:48,907 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 260 [2023-11-29 19:58:48,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 260 transitions, 560 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:58:48,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:58:48,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 260 [2023-11-29 19:58:48,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand