/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:04:57,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:04:57,724 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 [2023-12-05 21:04:57,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:04:57,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:04:57,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:04:57,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:04:57,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:04:57,757 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:04:57,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:04:57,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:04:57,757 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:04:57,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:04:57,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:04:57,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:04:57,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:04:57,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:04:57,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:04:57,759 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:04:57,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:04:57,760 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:04:57,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:04:57,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:04:57,760 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:04:57,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:04:57,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:04:57,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:04:57,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:04:57,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:04:57,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:04:57,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:04:57,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:04:57,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:04:57,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:04:57,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:04:58,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:04:58,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:04:58,016 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:04:58,017 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:04:58,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2023-12-05 21:04:59,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:04:59,297 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:04:59,297 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2023-12-05 21:04:59,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d89c783/35046ed61bba4abdb907fca51a484622/FLAG8caf1cf54 [2023-12-05 21:04:59,319 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d89c783/35046ed61bba4abdb907fca51a484622 [2023-12-05 21:04:59,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:04:59,322 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:04:59,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:04:59,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:04:59,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:04:59,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f49d400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59, skipping insertion in model container [2023-12-05 21:04:59,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,357 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:04:59,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:04:59,581 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:04:59,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:04:59,641 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:04:59,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59 WrapperNode [2023-12-05 21:04:59,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:04:59,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:04:59,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:04:59,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:04:59,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,701 INFO L138 Inliner]: procedures = 174, calls = 76, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 363 [2023-12-05 21:04:59,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:04:59,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:04:59,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:04:59,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:04:59,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:04:59,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:04:59,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:04:59,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:04:59,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (1/1) ... [2023-12-05 21:04:59,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:04:59,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:04:59,806 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) [2023-12-05 21:04:59,817 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 [2023-12-05 21:04:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-05 21:04:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-05 21:04:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:04:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-05 21:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:04:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-05 21:04:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:04:59,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:04:59,851 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:04:59,944 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:04:59,946 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:05:00,361 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:05:00,400 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:05:00,400 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-05 21:05:00,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:05:00 BoogieIcfgContainer [2023-12-05 21:05:00,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:05:00,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:05:00,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:05:00,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:05:00,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:04:59" (1/3) ... [2023-12-05 21:05:00,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4984d5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:05:00, skipping insertion in model container [2023-12-05 21:05:00,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:59" (2/3) ... [2023-12-05 21:05:00,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4984d5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:05:00, skipping insertion in model container [2023-12-05 21:05:00,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:05:00" (3/3) ... [2023-12-05 21:05:00,408 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_NetBSD_sysmon_power_sliced-pthread.i [2023-12-05 21:05:00,420 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:05:00,420 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-05 21:05:00,420 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:05:00,531 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:05:00,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 373 transitions, 750 flow [2023-12-05 21:05:00,698 INFO L124 PetriNetUnfolderBase]: 55/386 cut-off events. [2023-12-05 21:05:00,699 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:05:00,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 386 events. 55/386 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1564 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 342. Up to 10 conditions per place. [2023-12-05 21:05:00,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 373 transitions, 750 flow [2023-12-05 21:05:00,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 373 transitions, 750 flow [2023-12-05 21:05:00,733 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:05:00,739 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;@677a6756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:05:00,740 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-05 21:05:00,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:05:00,749 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-12-05 21:05:00,749 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:05:00,750 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:05:00,750 INFO L233 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] [2023-12-05 21:05:00,751 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-05 21:05:00,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:05:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1152961778, now seen corresponding path program 1 times [2023-12-05 21:05:00,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:05:00,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492419798] [2023-12-05 21:05:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:05:00,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:05:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:05:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:05:01,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:05:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492419798] [2023-12-05 21:05:01,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492419798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:05:01,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:05:01,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:05:01,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751975550] [2023-12-05 21:05:01,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:05:01,042 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:05:01,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:05:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:05:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:05:01,074 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 373 [2023-12-05 21:05:01,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 373 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:05:01,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 373 [2023-12-05 21:05:01,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:05:01,225 INFO L124 PetriNetUnfolderBase]: 90/482 cut-off events. [2023-12-05 21:05:01,225 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:05:01,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 482 events. 90/482 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2285 event pairs, 54 based on Foata normal form. 73/458 useless extension candidates. Maximal degree in co-relation 561. Up to 145 conditions per place. [2023-12-05 21:05:01,229 INFO L140 encePairwiseOnDemand]: 351/373 looper letters, 36 selfloop transitions, 1 changer transitions 0/273 dead transitions. [2023-12-05 21:05:01,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 273 transitions, 624 flow [2023-12-05 21:05:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:05:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:05:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2023-12-05 21:05:01,245 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.805183199285076 [2023-12-05 21:05:01,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2023-12-05 21:05:01,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2023-12-05 21:05:01,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:05:01,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2023-12-05 21:05:01,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,266 INFO L308 CegarLoopForPetriNet]: 322 programPoint places, -70 predicate places. [2023-12-05 21:05:01,266 INFO L500 AbstractCegarLoop]: Abstraction has has 252 places, 273 transitions, 624 flow [2023-12-05 21:05:01,267 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,267 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:05:01,267 INFO L233 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] [2023-12-05 21:05:01,267 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:05:01,268 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-05 21:05:01,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:05:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1152961777, now seen corresponding path program 1 times [2023-12-05 21:05:01,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:05:01,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042539449] [2023-12-05 21:05:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:05:01,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:05:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:05:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:05:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:05:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042539449] [2023-12-05 21:05:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042539449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:05:01,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:05:01,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:05:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088077059] [2023-12-05 21:05:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:05:01,432 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:05:01,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:05:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:05:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:05:01,434 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 373 [2023-12-05 21:05:01,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 273 transitions, 624 flow. Second operand has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:05:01,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 373 [2023-12-05 21:05:01,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:05:01,509 INFO L124 PetriNetUnfolderBase]: 58/391 cut-off events. [2023-12-05 21:05:01,510 INFO L125 PetriNetUnfolderBase]: For 50/82 co-relation queries the response was YES. [2023-12-05 21:05:01,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 391 events. 58/391 cut-off events. For 50/82 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1648 event pairs, 27 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 498. Up to 87 conditions per place. [2023-12-05 21:05:01,512 INFO L140 encePairwiseOnDemand]: 371/373 looper letters, 34 selfloop transitions, 1 changer transitions 0/272 dead transitions. [2023-12-05 21:05:01,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 272 transitions, 690 flow [2023-12-05 21:05:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:05:01,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:05:01,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 882 transitions. [2023-12-05 21:05:01,514 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7882037533512064 [2023-12-05 21:05:01,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 882 transitions. [2023-12-05 21:05:01,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 882 transitions. [2023-12-05 21:05:01,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:05:01,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 882 transitions. [2023-12-05 21:05:01,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,518 INFO L308 CegarLoopForPetriNet]: 322 programPoint places, -69 predicate places. [2023-12-05 21:05:01,518 INFO L500 AbstractCegarLoop]: Abstraction has has 253 places, 272 transitions, 690 flow [2023-12-05 21:05:01,519 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,519 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:05:01,519 INFO L233 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] [2023-12-05 21:05:01,519 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:05:01,520 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-05 21:05:01,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:05:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash 243200463, now seen corresponding path program 1 times [2023-12-05 21:05:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:05:01,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031981643] [2023-12-05 21:05:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:05:01,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:05:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:05:01,537 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-05 21:05:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:05:01,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-05 21:05:01,571 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-05 21:05:01,572 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-12-05 21:05:01,574 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-12-05 21:05:01,574 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 3 remaining) [2023-12-05 21:05:01,574 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:05:01,575 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-05 21:05:01,578 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-05 21:05:01,578 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-05 21:05:01,689 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:05:01,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 599 places, 701 transitions, 1412 flow [2023-12-05 21:05:01,818 INFO L124 PetriNetUnfolderBase]: 109/729 cut-off events. [2023-12-05 21:05:01,820 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:05:01,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 729 events. 109/729 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4091 event pairs, 0 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 669. Up to 10 conditions per place. [2023-12-05 21:05:01,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 599 places, 701 transitions, 1412 flow [2023-12-05 21:05:01,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 599 places, 701 transitions, 1412 flow [2023-12-05 21:05:01,859 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:05:01,862 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;@677a6756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:05:01,863 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-05 21:05:01,866 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:05:01,870 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-12-05 21:05:01,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:05:01,870 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:05:01,871 INFO L233 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] [2023-12-05 21:05:01,871 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-05 21:05:01,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:05:01,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1242448949, now seen corresponding path program 1 times [2023-12-05 21:05:01,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:05:01,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545901689] [2023-12-05 21:05:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:05:01,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:05:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:05:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:05:01,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:05:01,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545901689] [2023-12-05 21:05:01,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545901689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:05:01,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:05:01,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:05:01,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954723433] [2023-12-05 21:05:01,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:05:01,969 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:05:01,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:05:01,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:05:01,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:05:01,971 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 701 [2023-12-05 21:05:01,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 701 transitions, 1412 flow. Second operand has 3 states, 3 states have (on average 534.6666666666666) internal successors, (1604), 3 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:01,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:05:01,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 701 [2023-12-05 21:05:01,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:05:03,924 INFO L124 PetriNetUnfolderBase]: 5268/17903 cut-off events. [2023-12-05 21:05:03,924 INFO L125 PetriNetUnfolderBase]: For 759/759 co-relation queries the response was YES. [2023-12-05 21:05:04,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24558 conditions, 17903 events. 5268/17903 cut-off events. For 759/759 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 217001 event pairs, 3834 based on Foata normal form. 3771/18365 useless extension candidates. Maximal degree in co-relation 4123. Up to 6559 conditions per place. [2023-12-05 21:05:04,074 INFO L140 encePairwiseOnDemand]: 661/701 looper letters, 64 selfloop transitions, 1 changer transitions 0/509 dead transitions. [2023-12-05 21:05:04,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 509 transitions, 1158 flow [2023-12-05 21:05:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:05:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:05:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1700 transitions. [2023-12-05 21:05:04,078 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8083689966714218 [2023-12-05 21:05:04,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1700 transitions. [2023-12-05 21:05:04,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1700 transitions. [2023-12-05 21:05:04,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:05:04,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1700 transitions. [2023-12-05 21:05:04,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 566.6666666666666) internal successors, (1700), 3 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:04,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:04,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:04,089 INFO L308 CegarLoopForPetriNet]: 599 programPoint places, -135 predicate places. [2023-12-05 21:05:04,090 INFO L500 AbstractCegarLoop]: Abstraction has has 464 places, 509 transitions, 1158 flow [2023-12-05 21:05:04,090 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.6666666666666) internal successors, (1604), 3 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:04,090 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:05:04,091 INFO L233 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] [2023-12-05 21:05:04,091 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:05:04,091 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-05 21:05:04,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:05:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1242448948, now seen corresponding path program 1 times [2023-12-05 21:05:04,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:05:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492572614] [2023-12-05 21:05:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:05:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:05:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:05:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:05:04,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:05:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492572614] [2023-12-05 21:05:04,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492572614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:05:04,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:05:04,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:05:04,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680330540] [2023-12-05 21:05:04,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:05:04,136 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:05:04,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:05:04,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:05:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:05:04,139 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 533 out of 701 [2023-12-05 21:05:04,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 509 transitions, 1158 flow. Second operand has 3 states, 3 states have (on average 535.3333333333334) internal successors, (1606), 3 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:04,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:05:04,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 533 of 701 [2023-12-05 21:05:04,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:05:05,546 INFO L124 PetriNetUnfolderBase]: 3447/13589 cut-off events. [2023-12-05 21:05:05,547 INFO L125 PetriNetUnfolderBase]: For 2265/4633 co-relation queries the response was YES. [2023-12-05 21:05:05,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21877 conditions, 13589 events. 3447/13589 cut-off events. For 2265/4633 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 164237 event pairs, 2295 based on Foata normal form. 0/11864 useless extension candidates. Maximal degree in co-relation 3108. Up to 4093 conditions per place. [2023-12-05 21:05:05,652 INFO L140 encePairwiseOnDemand]: 699/701 looper letters, 62 selfloop transitions, 1 changer transitions 0/508 dead transitions. [2023-12-05 21:05:05,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 508 transitions, 1280 flow [2023-12-05 21:05:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:05:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:05:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1663 transitions. [2023-12-05 21:05:05,655 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7907750832144556 [2023-12-05 21:05:05,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1663 transitions. [2023-12-05 21:05:05,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1663 transitions. [2023-12-05 21:05:05,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:05:05,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1663 transitions. [2023-12-05 21:05:05,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:05,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:05,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:05,663 INFO L308 CegarLoopForPetriNet]: 599 programPoint places, -134 predicate places. [2023-12-05 21:05:05,664 INFO L500 AbstractCegarLoop]: Abstraction has has 465 places, 508 transitions, 1280 flow [2023-12-05 21:05:05,664 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 535.3333333333334) internal successors, (1606), 3 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:05,664 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:05:05,665 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2023-12-05 21:05:05,665 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:05:05,665 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-05 21:05:05,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:05:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 183058065, now seen corresponding path program 1 times [2023-12-05 21:05:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:05:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032697021] [2023-12-05 21:05:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:05:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:05:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:05:05,679 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-05 21:05:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:05:05,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-05 21:05:05,691 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-05 21:05:05,691 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-12-05 21:05:05,691 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-12-05 21:05:05,691 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 3 remaining) [2023-12-05 21:05:05,691 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:05:05,691 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-05 21:05:05,692 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-05 21:05:05,692 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-05 21:05:05,759 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:05:05,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 876 places, 1029 transitions, 2076 flow [2023-12-05 21:05:06,090 INFO L124 PetriNetUnfolderBase]: 163/1072 cut-off events. [2023-12-05 21:05:06,090 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-05 21:05:06,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 1072 events. 163/1072 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6843 event pairs, 0 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 996. Up to 10 conditions per place. [2023-12-05 21:05:06,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 876 places, 1029 transitions, 2076 flow [2023-12-05 21:05:06,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 876 places, 1029 transitions, 2076 flow [2023-12-05 21:05:06,174 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:05:06,174 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;@677a6756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:05:06,174 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-05 21:05:06,176 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:05:06,176 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-12-05 21:05:06,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:05:06,176 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:05:06,176 INFO L233 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] [2023-12-05 21:05:06,176 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-05 21:05:06,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:05:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2145798704, now seen corresponding path program 1 times [2023-12-05 21:05:06,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:05:06,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360543845] [2023-12-05 21:05:06,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:05:06,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:05:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:05:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:05:06,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:05:06,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360543845] [2023-12-05 21:05:06,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360543845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:05:06,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:05:06,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:05:06,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060329976] [2023-12-05 21:05:06,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:05:06,204 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:05:06,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:05:06,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:05:06,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:05:06,207 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 783 out of 1029 [2023-12-05 21:05:06,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 1029 transitions, 2076 flow. Second operand has 3 states, 3 states have (on average 785.6666666666666) internal successors, (2357), 3 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:05:06,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:05:06,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 783 of 1029 [2023-12-05 21:05:06,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand