/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/weaver/parallel-barrier.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:20:01,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:20:01,569 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 21:20:01,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:20:01,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:20:01,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:20:01,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:20:01,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:20:01,604 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:20:01,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:20:01,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:20:01,605 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:20:01,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:20:01,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:20:01,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:20:01,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:20:01,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:20:01,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:20:01,607 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:20:01,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:20:01,607 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:20:01,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:20:01,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:20:01,613 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:20:01,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:20:01,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:20:01,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:20:01,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:20:01,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:20:01,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:20:01,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:20:01,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:20:01,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:20:01,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:20:01,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:20:01,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:20:01,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:20:01,859 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:20:01,859 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:20:01,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2023-12-05 21:20:02,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:20:03,012 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:20:03,013 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2023-12-05 21:20:03,020 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8784dba/2897142e61384a0c903d24125a4b108b/FLAG95a6cc383 [2023-12-05 21:20:03,038 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8784dba/2897142e61384a0c903d24125a4b108b [2023-12-05 21:20:03,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:20:03,041 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:20:03,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:20:03,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:20:03,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:20:03,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c7e07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03, skipping insertion in model container [2023-12-05 21:20:03,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,078 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:20:03,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:20:03,245 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:20:03,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:20:03,272 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:20:03,273 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:20:03,278 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:20:03,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03 WrapperNode [2023-12-05 21:20:03,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:20:03,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:20:03,280 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:20:03,280 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:20:03,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,320 INFO L138 Inliner]: procedures = 25, calls = 99, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 272 [2023-12-05 21:20:03,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:20:03,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:20:03,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:20:03,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:20:03,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:20:03,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:20:03,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:20:03,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:20:03,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (1/1) ... [2023-12-05 21:20:03,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:20:03,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:20:03,379 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 21:20:03,385 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 21:20:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:20:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:20:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:20:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:20:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-05 21:20:03,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-05 21:20:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-05 21:20:03,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-05 21:20:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-05 21:20:03,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-05 21:20:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-05 21:20:03,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-05 21:20:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:20:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-12-05 21:20:03,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-12-05 21:20:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-12-05 21:20:03,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-12-05 21:20:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:20:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:20:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:20:03,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:20:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:20:03,410 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 21:20:03,523 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:20:03,525 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:20:03,904 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:20:03,975 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:20:03,975 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:20:03,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:20:03 BoogieIcfgContainer [2023-12-05 21:20:03,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:20:03,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:20:03,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:20:03,986 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:20:03,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:20:03" (1/3) ... [2023-12-05 21:20:03,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417889fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:20:03, skipping insertion in model container [2023-12-05 21:20:03,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:03" (2/3) ... [2023-12-05 21:20:03,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417889fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:20:03, skipping insertion in model container [2023-12-05 21:20:03,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:20:03" (3/3) ... [2023-12-05 21:20:03,989 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-12-05 21:20:04,002 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:20:04,002 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-12-05 21:20:04,002 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:20:04,134 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-12-05 21:20:04,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 279 transitions, 624 flow [2023-12-05 21:20:04,268 INFO L124 PetriNetUnfolderBase]: 8/247 cut-off events. [2023-12-05 21:20:04,268 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-12-05 21:20:04,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 247 events. 8/247 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 385 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 210. Up to 3 conditions per place. [2023-12-05 21:20:04,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 279 transitions, 624 flow [2023-12-05 21:20:04,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 225 transitions, 495 flow [2023-12-05 21:20:04,295 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:20:04,300 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;@5028f2b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:20:04,301 INFO L363 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-12-05 21:20:04,323 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:20:04,323 INFO L124 PetriNetUnfolderBase]: 1/78 cut-off events. [2023-12-05 21:20:04,323 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:20:04,323 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:04,324 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, 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] [2023-12-05 21:20:04,324 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:04,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1078353354, now seen corresponding path program 1 times [2023-12-05 21:20:04,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:04,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928311216] [2023-12-05 21:20:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:04,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:04,712 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 21:20:04,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:04,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928311216] [2023-12-05 21:20:04,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928311216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:04,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:04,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:04,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742850783] [2023-12-05 21:20:04,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:04,721 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:04,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:04,749 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 283 [2023-12-05 21:20:04,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 225 transitions, 495 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:04,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:04,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 283 [2023-12-05 21:20:04,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:07,458 INFO L124 PetriNetUnfolderBase]: 9214/18204 cut-off events. [2023-12-05 21:20:07,459 INFO L125 PetriNetUnfolderBase]: For 2213/2420 co-relation queries the response was YES. [2023-12-05 21:20:07,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33680 conditions, 18204 events. 9214/18204 cut-off events. For 2213/2420 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 157708 event pairs, 7539 based on Foata normal form. 205/14160 useless extension candidates. Maximal degree in co-relation 32337. Up to 11045 conditions per place. [2023-12-05 21:20:07,649 INFO L140 encePairwiseOnDemand]: 272/283 looper letters, 100 selfloop transitions, 6 changer transitions 1/269 dead transitions. [2023-12-05 21:20:07,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 269 transitions, 837 flow [2023-12-05 21:20:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2023-12-05 21:20:07,663 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8327444051825678 [2023-12-05 21:20:07,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2023-12-05 21:20:07,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2023-12-05 21:20:07,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:07,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2023-12-05 21:20:07,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 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 21:20:07,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:07,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:07,683 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 1 predicate places. [2023-12-05 21:20:07,684 INFO L500 AbstractCegarLoop]: Abstraction has has 238 places, 269 transitions, 837 flow [2023-12-05 21:20:07,684 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:07,685 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:07,685 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, 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] [2023-12-05 21:20:07,685 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:20:07,685 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:07,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:07,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1078353353, now seen corresponding path program 1 times [2023-12-05 21:20:07,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:07,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324498853] [2023-12-05 21:20:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:07,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:08,008 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 21:20:08,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:08,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324498853] [2023-12-05 21:20:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324498853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:20:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036148250] [2023-12-05 21:20:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:08,010 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:20:08,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:20:08,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:20:08,013 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 283 [2023-12-05 21:20:08,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 269 transitions, 837 flow. Second operand has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 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 21:20:08,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:08,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 283 [2023-12-05 21:20:08,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:10,489 INFO L124 PetriNetUnfolderBase]: 10092/18675 cut-off events. [2023-12-05 21:20:10,489 INFO L125 PetriNetUnfolderBase]: For 6255/9055 co-relation queries the response was YES. [2023-12-05 21:20:10,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47825 conditions, 18675 events. 10092/18675 cut-off events. For 6255/9055 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 157331 event pairs, 8488 based on Foata normal form. 0/15544 useless extension candidates. Maximal degree in co-relation 45077. Up to 12421 conditions per place. [2023-12-05 21:20:10,662 INFO L140 encePairwiseOnDemand]: 275/283 looper letters, 117 selfloop transitions, 6 changer transitions 1/276 dead transitions. [2023-12-05 21:20:10,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 276 transitions, 1091 flow [2023-12-05 21:20:10,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-05 21:20:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-05 21:20:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 870 transitions. [2023-12-05 21:20:10,664 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7685512367491166 [2023-12-05 21:20:10,664 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 870 transitions. [2023-12-05 21:20:10,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 870 transitions. [2023-12-05 21:20:10,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:10,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 870 transitions. [2023-12-05 21:20:10,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 217.5) internal successors, (870), 4 states have internal predecessors, (870), 0 states have call successors, (0), 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 21:20:10,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 21:20:10,668 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 21:20:10,669 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 2 predicate places. [2023-12-05 21:20:10,669 INFO L500 AbstractCegarLoop]: Abstraction has has 239 places, 276 transitions, 1091 flow [2023-12-05 21:20:10,669 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 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 21:20:10,670 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:10,670 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, 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] [2023-12-05 21:20:10,670 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:20:10,670 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:10,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1178598721, now seen corresponding path program 1 times [2023-12-05 21:20:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:10,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965084034] [2023-12-05 21:20:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:10,726 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 21:20:10,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965084034] [2023-12-05 21:20:10,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965084034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:10,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:10,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:10,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025177205] [2023-12-05 21:20:10,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:10,727 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:10,728 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 283 [2023-12-05 21:20:10,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 276 transitions, 1091 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 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 21:20:10,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:10,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 283 [2023-12-05 21:20:10,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:13,708 INFO L124 PetriNetUnfolderBase]: 10611/19801 cut-off events. [2023-12-05 21:20:13,708 INFO L125 PetriNetUnfolderBase]: For 14842/20523 co-relation queries the response was YES. [2023-12-05 21:20:13,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63919 conditions, 19801 events. 10611/19801 cut-off events. For 14842/20523 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 169037 event pairs, 8398 based on Foata normal form. 0/16503 useless extension candidates. Maximal degree in co-relation 59396. Up to 12763 conditions per place. [2023-12-05 21:20:13,914 INFO L140 encePairwiseOnDemand]: 274/283 looper letters, 162 selfloop transitions, 9 changer transitions 3/342 dead transitions. [2023-12-05 21:20:13,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 342 transitions, 1891 flow [2023-12-05 21:20:13,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-12-05 21:20:13,917 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8268551236749117 [2023-12-05 21:20:13,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-12-05 21:20:13,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-12-05 21:20:13,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:13,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-12-05 21:20:13,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 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 21:20:13,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:13,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:13,922 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 4 predicate places. [2023-12-05 21:20:13,922 INFO L500 AbstractCegarLoop]: Abstraction has has 241 places, 342 transitions, 1891 flow [2023-12-05 21:20:13,922 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 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 21:20:13,922 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:13,923 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, 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] [2023-12-05 21:20:13,923 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:20:13,923 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:13,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:13,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1178598720, now seen corresponding path program 1 times [2023-12-05 21:20:13,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:13,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491401132] [2023-12-05 21:20:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:14,045 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 21:20:14,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491401132] [2023-12-05 21:20:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491401132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:14,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:14,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:14,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517747952] [2023-12-05 21:20:14,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:14,046 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:14,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:14,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:14,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:14,048 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 283 [2023-12-05 21:20:14,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 342 transitions, 1891 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:14,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:14,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 283 [2023-12-05 21:20:14,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:16,531 INFO L124 PetriNetUnfolderBase]: 10356/19333 cut-off events. [2023-12-05 21:20:16,531 INFO L125 PetriNetUnfolderBase]: For 27362/36522 co-relation queries the response was YES. [2023-12-05 21:20:16,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74474 conditions, 19333 events. 10356/19333 cut-off events. For 27362/36522 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 164508 event pairs, 8269 based on Foata normal form. 160/18133 useless extension candidates. Maximal degree in co-relation 70360. Up to 12458 conditions per place. [2023-12-05 21:20:16,868 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 137 selfloop transitions, 1 changer transitions 3/337 dead transitions. [2023-12-05 21:20:16,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 337 transitions, 2137 flow [2023-12-05 21:20:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-12-05 21:20:16,870 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7962308598351001 [2023-12-05 21:20:16,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-12-05 21:20:16,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-12-05 21:20:16,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:16,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-12-05 21:20:16,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 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 21:20:16,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:16,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:16,875 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 4 predicate places. [2023-12-05 21:20:16,875 INFO L500 AbstractCegarLoop]: Abstraction has has 241 places, 337 transitions, 2137 flow [2023-12-05 21:20:16,875 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:16,875 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:16,875 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, 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] [2023-12-05 21:20:16,875 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:20:16,876 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:16,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2029330066, now seen corresponding path program 1 times [2023-12-05 21:20:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:16,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967027880] [2023-12-05 21:20:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:16,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:16,973 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 21:20:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967027880] [2023-12-05 21:20:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967027880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:16,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749973055] [2023-12-05 21:20:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:16,974 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:16,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:16,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:16,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:16,977 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 283 [2023-12-05 21:20:16,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 337 transitions, 2137 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:16,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:16,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 283 [2023-12-05 21:20:16,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:19,560 INFO L124 PetriNetUnfolderBase]: 9692/18612 cut-off events. [2023-12-05 21:20:19,560 INFO L125 PetriNetUnfolderBase]: For 34538/40287 co-relation queries the response was YES. [2023-12-05 21:20:19,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82212 conditions, 18612 events. 9692/18612 cut-off events. For 34538/40287 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 159923 event pairs, 2583 based on Foata normal form. 446/17961 useless extension candidates. Maximal degree in co-relation 77425. Up to 11082 conditions per place. [2023-12-05 21:20:19,768 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 208 selfloop transitions, 4 changer transitions 3/405 dead transitions. [2023-12-05 21:20:19,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 405 transitions, 3306 flow [2023-12-05 21:20:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-12-05 21:20:19,773 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8268551236749117 [2023-12-05 21:20:19,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-12-05 21:20:19,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-12-05 21:20:19,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:19,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-12-05 21:20:19,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 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 21:20:19,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:19,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:19,794 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 4 predicate places. [2023-12-05 21:20:19,795 INFO L500 AbstractCegarLoop]: Abstraction has has 241 places, 405 transitions, 3306 flow [2023-12-05 21:20:19,795 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:19,795 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:19,795 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, 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] [2023-12-05 21:20:19,820 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:20:19,820 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:19,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:19,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2029330065, now seen corresponding path program 1 times [2023-12-05 21:20:19,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:19,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358742694] [2023-12-05 21:20:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:19,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:19,889 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 21:20:19,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358742694] [2023-12-05 21:20:19,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358742694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:19,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:19,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:19,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231867107] [2023-12-05 21:20:19,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:19,890 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:19,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:19,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:19,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:19,892 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-12-05 21:20:19,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 405 transitions, 3306 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 21:20:19,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:19,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-12-05 21:20:19,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:22,703 INFO L124 PetriNetUnfolderBase]: 8935/17171 cut-off events. [2023-12-05 21:20:22,703 INFO L125 PetriNetUnfolderBase]: For 47394/53829 co-relation queries the response was YES. [2023-12-05 21:20:22,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87802 conditions, 17171 events. 8935/17171 cut-off events. For 47394/53829 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 144456 event pairs, 6075 based on Foata normal form. 438/16635 useless extension candidates. Maximal degree in co-relation 82305. Up to 10314 conditions per place. [2023-12-05 21:20:22,892 INFO L140 encePairwiseOnDemand]: 275/283 looper letters, 270 selfloop transitions, 13 changer transitions 3/458 dead transitions. [2023-12-05 21:20:22,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 458 transitions, 4518 flow [2023-12-05 21:20:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-12-05 21:20:22,894 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8221436984687868 [2023-12-05 21:20:22,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-12-05 21:20:22,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-12-05 21:20:22,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:22,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-12-05 21:20:22,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 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 21:20:22,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:22,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:22,898 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 6 predicate places. [2023-12-05 21:20:22,898 INFO L500 AbstractCegarLoop]: Abstraction has has 243 places, 458 transitions, 4518 flow [2023-12-05 21:20:22,898 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 21:20:22,898 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:22,899 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, 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, 1, 1, 1] [2023-12-05 21:20:22,899 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:20:22,899 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:22,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:22,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1144856209, now seen corresponding path program 1 times [2023-12-05 21:20:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:22,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840256174] [2023-12-05 21:20:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:22,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:22,978 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 21:20:22,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840256174] [2023-12-05 21:20:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840256174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:22,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:22,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:22,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368168906] [2023-12-05 21:20:22,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:22,982 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:22,984 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 283 [2023-12-05 21:20:22,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 458 transitions, 4518 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 21:20:22,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:22,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 283 [2023-12-05 21:20:22,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:25,529 INFO L124 PetriNetUnfolderBase]: 8306/17147 cut-off events. [2023-12-05 21:20:25,529 INFO L125 PetriNetUnfolderBase]: For 59708/66586 co-relation queries the response was YES. [2023-12-05 21:20:25,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93247 conditions, 17147 events. 8306/17147 cut-off events. For 59708/66586 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 151692 event pairs, 1834 based on Foata normal form. 469/16666 useless extension candidates. Maximal degree in co-relation 87726. Up to 9377 conditions per place. [2023-12-05 21:20:25,725 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 326 selfloop transitions, 10 changer transitions 3/535 dead transitions. [2023-12-05 21:20:25,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 535 transitions, 6391 flow [2023-12-05 21:20:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-12-05 21:20:25,727 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8221436984687868 [2023-12-05 21:20:25,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-12-05 21:20:25,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-12-05 21:20:25,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:25,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-12-05 21:20:25,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 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 21:20:25,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:25,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:25,731 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 6 predicate places. [2023-12-05 21:20:25,731 INFO L500 AbstractCegarLoop]: Abstraction has has 243 places, 535 transitions, 6391 flow [2023-12-05 21:20:25,731 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 21:20:25,731 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:25,731 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, 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, 1, 1, 1] [2023-12-05 21:20:25,731 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 21:20:25,731 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:25,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:25,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1144856210, now seen corresponding path program 1 times [2023-12-05 21:20:25,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:25,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068366232] [2023-12-05 21:20:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:25,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:25,783 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 21:20:25,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:25,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068366232] [2023-12-05 21:20:25,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068366232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:25,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:25,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:25,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210384002] [2023-12-05 21:20:25,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:25,784 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:25,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:25,785 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-12-05 21:20:25,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 535 transitions, 6391 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 21:20:25,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:25,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-12-05 21:20:25,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:28,580 INFO L124 PetriNetUnfolderBase]: 8270/18209 cut-off events. [2023-12-05 21:20:28,581 INFO L125 PetriNetUnfolderBase]: For 76756/82536 co-relation queries the response was YES. [2023-12-05 21:20:28,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105434 conditions, 18209 events. 8270/18209 cut-off events. For 76756/82536 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 170122 event pairs, 1447 based on Foata normal form. 578/17940 useless extension candidates. Maximal degree in co-relation 96619. Up to 9440 conditions per place. [2023-12-05 21:20:28,788 INFO L140 encePairwiseOnDemand]: 275/283 looper letters, 430 selfloop transitions, 31 changer transitions 11/640 dead transitions. [2023-12-05 21:20:28,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 640 transitions, 9011 flow [2023-12-05 21:20:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:28,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2023-12-05 21:20:28,789 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8209658421672555 [2023-12-05 21:20:28,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2023-12-05 21:20:28,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2023-12-05 21:20:28,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:28,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2023-12-05 21:20:28,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 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 21:20:28,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:28,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:28,793 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 8 predicate places. [2023-12-05 21:20:28,793 INFO L500 AbstractCegarLoop]: Abstraction has has 245 places, 640 transitions, 9011 flow [2023-12-05 21:20:28,793 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 21:20:28,793 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:28,793 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, 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, 1, 1, 1] [2023-12-05 21:20:28,793 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-05 21:20:28,794 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:28,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:28,794 INFO L85 PathProgramCache]: Analyzing trace with hash -898861347, now seen corresponding path program 1 times [2023-12-05 21:20:28,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:28,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717818305] [2023-12-05 21:20:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:28,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:28,832 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 21:20:28,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:28,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717818305] [2023-12-05 21:20:28,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717818305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:28,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:28,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552658586] [2023-12-05 21:20:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:28,833 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:28,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:28,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:28,834 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-12-05 21:20:28,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 640 transitions, 9011 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 21:20:28,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:28,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-12-05 21:20:28,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:32,162 INFO L124 PetriNetUnfolderBase]: 8964/19602 cut-off events. [2023-12-05 21:20:32,162 INFO L125 PetriNetUnfolderBase]: For 110956/119028 co-relation queries the response was YES. [2023-12-05 21:20:32,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124483 conditions, 19602 events. 8964/19602 cut-off events. For 110956/119028 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 185338 event pairs, 1657 based on Foata normal form. 487/19164 useless extension candidates. Maximal degree in co-relation 113468. Up to 9982 conditions per place. [2023-12-05 21:20:32,387 INFO L140 encePairwiseOnDemand]: 275/283 looper letters, 529 selfloop transitions, 37 changer transitions 11/737 dead transitions. [2023-12-05 21:20:32,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 737 transitions, 11886 flow [2023-12-05 21:20:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2023-12-05 21:20:32,388 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.823321554770318 [2023-12-05 21:20:32,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2023-12-05 21:20:32,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2023-12-05 21:20:32,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:32,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2023-12-05 21:20:32,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 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 21:20:32,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:32,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:32,392 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 10 predicate places. [2023-12-05 21:20:32,392 INFO L500 AbstractCegarLoop]: Abstraction has has 247 places, 737 transitions, 11886 flow [2023-12-05 21:20:32,392 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 21:20:32,392 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:32,392 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, 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, 1, 1, 1] [2023-12-05 21:20:32,392 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-05 21:20:32,392 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:32,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:32,393 INFO L85 PathProgramCache]: Analyzing trace with hash -898861346, now seen corresponding path program 1 times [2023-12-05 21:20:32,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:32,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379638503] [2023-12-05 21:20:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:32,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:32,444 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 21:20:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:32,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379638503] [2023-12-05 21:20:32,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379638503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:32,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:32,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556414966] [2023-12-05 21:20:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:32,445 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:32,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:32,446 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 283 [2023-12-05 21:20:32,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 737 transitions, 11886 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 21:20:32,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:32,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 283 [2023-12-05 21:20:32,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:35,568 INFO L124 PetriNetUnfolderBase]: 8153/17483 cut-off events. [2023-12-05 21:20:35,568 INFO L125 PetriNetUnfolderBase]: For 138672/147330 co-relation queries the response was YES. [2023-12-05 21:20:35,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123259 conditions, 17483 events. 8153/17483 cut-off events. For 138672/147330 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 160652 event pairs, 1288 based on Foata normal form. 519/17129 useless extension candidates. Maximal degree in co-relation 111489. Up to 8934 conditions per place. [2023-12-05 21:20:35,802 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 574 selfloop transitions, 11 changer transitions 11/821 dead transitions. [2023-12-05 21:20:35,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 821 transitions, 14930 flow [2023-12-05 21:20:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-12-05 21:20:35,804 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8197879858657244 [2023-12-05 21:20:35,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-12-05 21:20:35,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-12-05 21:20:35,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:35,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-12-05 21:20:35,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 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) [2023-12-05 21:20:35,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:35,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:35,808 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 10 predicate places. [2023-12-05 21:20:35,808 INFO L500 AbstractCegarLoop]: Abstraction has has 247 places, 821 transitions, 14930 flow [2023-12-05 21:20:35,808 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 21:20:35,808 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:35,808 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:20:35,808 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-05 21:20:35,808 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:35,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:35,809 INFO L85 PathProgramCache]: Analyzing trace with hash 762151796, now seen corresponding path program 1 times [2023-12-05 21:20:35,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:35,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262241982] [2023-12-05 21:20:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:35,862 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 21:20:35,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:35,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262241982] [2023-12-05 21:20:35,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262241982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:35,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:35,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742599780] [2023-12-05 21:20:35,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:35,863 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:35,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:35,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:35,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:35,864 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 283 [2023-12-05 21:20:35,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 821 transitions, 14930 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:35,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:35,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 283 [2023-12-05 21:20:35,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:39,485 INFO L124 PetriNetUnfolderBase]: 7845/17136 cut-off events. [2023-12-05 21:20:39,486 INFO L125 PetriNetUnfolderBase]: For 176363/185698 co-relation queries the response was YES. [2023-12-05 21:20:39,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128584 conditions, 17136 events. 7845/17136 cut-off events. For 176363/185698 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 159051 event pairs, 1107 based on Foata normal form. 521/16774 useless extension candidates. Maximal degree in co-relation 117045. Up to 8426 conditions per place. [2023-12-05 21:20:39,705 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 688 selfloop transitions, 23 changer transitions 13/937 dead transitions. [2023-12-05 21:20:39,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 937 transitions, 19211 flow [2023-12-05 21:20:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-12-05 21:20:39,706 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8150765606595995 [2023-12-05 21:20:39,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-12-05 21:20:39,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-12-05 21:20:39,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:39,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-12-05 21:20:39,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 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 21:20:39,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:39,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:39,709 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 10 predicate places. [2023-12-05 21:20:39,710 INFO L500 AbstractCegarLoop]: Abstraction has has 247 places, 937 transitions, 19211 flow [2023-12-05 21:20:39,710 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:39,710 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:39,710 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:20:39,710 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-05 21:20:39,710 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:39,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash 762151795, now seen corresponding path program 1 times [2023-12-05 21:20:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:39,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279513184] [2023-12-05 21:20:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:39,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:39,746 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 21:20:39,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279513184] [2023-12-05 21:20:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279513184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:39,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:39,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344943409] [2023-12-05 21:20:39,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:39,747 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:39,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:39,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:39,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:39,748 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-12-05 21:20:39,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 937 transitions, 19211 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 21:20:39,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:39,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-12-05 21:20:39,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:43,510 INFO L124 PetriNetUnfolderBase]: 8444/17594 cut-off events. [2023-12-05 21:20:43,510 INFO L125 PetriNetUnfolderBase]: For 241786/254722 co-relation queries the response was YES. [2023-12-05 21:20:43,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147793 conditions, 17594 events. 8444/17594 cut-off events. For 241786/254722 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 160515 event pairs, 1916 based on Foata normal form. 337/16936 useless extension candidates. Maximal degree in co-relation 130572. Up to 8918 conditions per place. [2023-12-05 21:20:43,764 INFO L140 encePairwiseOnDemand]: 275/283 looper letters, 834 selfloop transitions, 63 changer transitions 36/1085 dead transitions. [2023-12-05 21:20:43,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1085 transitions, 24601 flow [2023-12-05 21:20:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:43,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-12-05 21:20:43,766 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.817432273262662 [2023-12-05 21:20:43,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-12-05 21:20:43,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-12-05 21:20:43,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:43,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-12-05 21:20:43,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 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 21:20:43,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:43,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:20:43,769 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 12 predicate places. [2023-12-05 21:20:43,769 INFO L500 AbstractCegarLoop]: Abstraction has has 249 places, 1085 transitions, 24601 flow [2023-12-05 21:20:43,770 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 21:20:43,770 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:43,770 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, 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, 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] [2023-12-05 21:20:43,770 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-05 21:20:43,770 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:43,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash 827527954, now seen corresponding path program 1 times [2023-12-05 21:20:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:43,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667774660] [2023-12-05 21:20:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:44,163 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 21:20:44,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:44,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667774660] [2023-12-05 21:20:44,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667774660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:44,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:44,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-05 21:20:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985920157] [2023-12-05 21:20:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:44,165 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-05 21:20:44,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-05 21:20:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-05 21:20:44,167 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 283 [2023-12-05 21:20:44,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 1085 transitions, 24601 flow. Second operand has 5 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 0 states have call successors, (0), 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 21:20:44,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:44,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 283 [2023-12-05 21:20:44,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:48,682 INFO L124 PetriNetUnfolderBase]: 8441/18483 cut-off events. [2023-12-05 21:20:48,682 INFO L125 PetriNetUnfolderBase]: For 281805/300322 co-relation queries the response was YES. [2023-12-05 21:20:48,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160688 conditions, 18483 events. 8441/18483 cut-off events. For 281805/300322 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 175927 event pairs, 940 based on Foata normal form. 432/17933 useless extension candidates. Maximal degree in co-relation 145089. Up to 8916 conditions per place. [2023-12-05 21:20:49,149 INFO L140 encePairwiseOnDemand]: 274/283 looper letters, 1006 selfloop transitions, 47 changer transitions 36/1239 dead transitions. [2023-12-05 21:20:49,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1239 transitions, 30358 flow [2023-12-05 21:20:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-05 21:20:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-05 21:20:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 895 transitions. [2023-12-05 21:20:49,152 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7906360424028268 [2023-12-05 21:20:49,152 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 895 transitions. [2023-12-05 21:20:49,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 895 transitions. [2023-12-05 21:20:49,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:49,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 895 transitions. [2023-12-05 21:20:49,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 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 21:20:49,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 21:20:49,155 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 21:20:49,155 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 15 predicate places. [2023-12-05 21:20:49,156 INFO L500 AbstractCegarLoop]: Abstraction has has 252 places, 1239 transitions, 30358 flow [2023-12-05 21:20:49,156 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 0 states have call successors, (0), 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 21:20:49,156 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:49,156 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, 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, 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] [2023-12-05 21:20:49,156 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-05 21:20:49,156 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:49,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1853484691, now seen corresponding path program 1 times [2023-12-05 21:20:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:49,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756427608] [2023-12-05 21:20:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:49,339 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 21:20:49,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:49,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756427608] [2023-12-05 21:20:49,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756427608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:49,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:49,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:20:49,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082519567] [2023-12-05 21:20:49,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:49,341 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:20:49,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:49,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:20:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:20:49,342 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 283 [2023-12-05 21:20:49,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 1239 transitions, 30358 flow. Second operand has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:20:49,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:49,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 283 [2023-12-05 21:20:49,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:54,217 INFO L124 PetriNetUnfolderBase]: 8187/17978 cut-off events. [2023-12-05 21:20:54,217 INFO L125 PetriNetUnfolderBase]: For 318987/338147 co-relation queries the response was YES. [2023-12-05 21:20:54,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167209 conditions, 17978 events. 8187/17978 cut-off events. For 318987/338147 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 169931 event pairs, 877 based on Foata normal form. 815/17861 useless extension candidates. Maximal degree in co-relation 152825. Up to 8548 conditions per place. [2023-12-05 21:20:54,615 INFO L140 encePairwiseOnDemand]: 273/283 looper letters, 1045 selfloop transitions, 42 changer transitions 40/1277 dead transitions. [2023-12-05 21:20:54,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 1277 transitions, 33450 flow [2023-12-05 21:20:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:20:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:20:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1299 transitions. [2023-12-05 21:20:54,617 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.765017667844523 [2023-12-05 21:20:54,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1299 transitions. [2023-12-05 21:20:54,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1299 transitions. [2023-12-05 21:20:54,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:54,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1299 transitions. [2023-12-05 21:20:54,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.5) internal successors, (1299), 6 states have internal predecessors, (1299), 0 states have call successors, (0), 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 21:20:54,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:20:54,622 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:20:54,622 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 19 predicate places. [2023-12-05 21:20:54,622 INFO L500 AbstractCegarLoop]: Abstraction has has 256 places, 1277 transitions, 33450 flow [2023-12-05 21:20:54,623 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:20:54,623 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:54,623 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, 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, 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] [2023-12-05 21:20:54,623 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-05 21:20:54,623 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:54,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:54,623 INFO L85 PathProgramCache]: Analyzing trace with hash 562382749, now seen corresponding path program 1 times [2023-12-05 21:20:54,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:54,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307107949] [2023-12-05 21:20:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:54,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:54,799 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 21:20:54,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:54,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307107949] [2023-12-05 21:20:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307107949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:54,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:54,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-05 21:20:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481564525] [2023-12-05 21:20:54,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:54,800 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-05 21:20:54,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:54,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-05 21:20:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-05 21:20:54,801 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 283 [2023-12-05 21:20:54,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 1277 transitions, 33450 flow. Second operand has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 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 21:20:54,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:54,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 283 [2023-12-05 21:20:54,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:59,459 INFO L124 PetriNetUnfolderBase]: 7807/17390 cut-off events. [2023-12-05 21:20:59,459 INFO L125 PetriNetUnfolderBase]: For 343908/364616 co-relation queries the response was YES. [2023-12-05 21:20:59,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172978 conditions, 17390 events. 7807/17390 cut-off events. For 343908/364616 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 164998 event pairs, 877 based on Foata normal form. 811/17293 useless extension candidates. Maximal degree in co-relation 160628. Up to 8430 conditions per place. [2023-12-05 21:20:59,708 INFO L140 encePairwiseOnDemand]: 272/283 looper letters, 1048 selfloop transitions, 111 changer transitions 40/1349 dead transitions. [2023-12-05 21:20:59,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1349 transitions, 38019 flow [2023-12-05 21:20:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-05 21:20:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-05 21:20:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 913 transitions. [2023-12-05 21:20:59,710 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8065371024734982 [2023-12-05 21:20:59,710 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 913 transitions. [2023-12-05 21:20:59,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 913 transitions. [2023-12-05 21:20:59,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:59,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 913 transitions. [2023-12-05 21:20:59,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.25) internal successors, (913), 4 states have internal predecessors, (913), 0 states have call successors, (0), 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 21:20:59,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 21:20:59,714 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 21:20:59,714 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 22 predicate places. [2023-12-05 21:20:59,714 INFO L500 AbstractCegarLoop]: Abstraction has has 259 places, 1349 transitions, 38019 flow [2023-12-05 21:20:59,714 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 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 21:20:59,714 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:59,714 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, 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, 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] [2023-12-05 21:20:59,714 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-05 21:20:59,715 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:20:59,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:59,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1751040596, now seen corresponding path program 1 times [2023-12-05 21:20:59,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:59,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174360030] [2023-12-05 21:20:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:59,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:59,880 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 21:20:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:59,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174360030] [2023-12-05 21:20:59,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174360030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:59,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:59,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:20:59,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878091395] [2023-12-05 21:20:59,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:59,882 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:20:59,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:20:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:20:59,883 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 283 [2023-12-05 21:20:59,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 1349 transitions, 38019 flow. Second operand has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 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 21:20:59,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:59,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 283 [2023-12-05 21:20:59,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:05,174 INFO L124 PetriNetUnfolderBase]: 7779/17921 cut-off events. [2023-12-05 21:21:05,174 INFO L125 PetriNetUnfolderBase]: For 389990/411714 co-relation queries the response was YES. [2023-12-05 21:21:05,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186978 conditions, 17921 events. 7779/17921 cut-off events. For 389990/411714 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 174371 event pairs, 741 based on Foata normal form. 843/17863 useless extension candidates. Maximal degree in co-relation 166722. Up to 8715 conditions per place. [2023-12-05 21:21:05,458 INFO L140 encePairwiseOnDemand]: 272/283 looper letters, 1225 selfloop transitions, 150 changer transitions 47/1581 dead transitions. [2023-12-05 21:21:05,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 1581 transitions, 48013 flow [2023-12-05 21:21:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-05 21:21:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-05 21:21:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 924 transitions. [2023-12-05 21:21:05,460 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8162544169611308 [2023-12-05 21:21:05,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 924 transitions. [2023-12-05 21:21:05,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 924 transitions. [2023-12-05 21:21:05,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:05,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 924 transitions. [2023-12-05 21:21:05,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 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 21:21:05,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 21:21:05,463 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 21:21:05,463 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 25 predicate places. [2023-12-05 21:21:05,463 INFO L500 AbstractCegarLoop]: Abstraction has has 262 places, 1581 transitions, 48013 flow [2023-12-05 21:21:05,464 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 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 21:21:05,464 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:05,464 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, 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, 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] [2023-12-05 21:21:05,464 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-05 21:21:05,464 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:21:05,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1604672068, now seen corresponding path program 1 times [2023-12-05 21:21:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:05,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677220743] [2023-12-05 21:21:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:05,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:05,603 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 21:21:05,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:05,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677220743] [2023-12-05 21:21:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677220743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:05,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:05,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:21:05,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531126342] [2023-12-05 21:21:05,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:05,606 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:21:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:05,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:21:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:21:05,607 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 283 [2023-12-05 21:21:05,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 1581 transitions, 48013 flow. Second operand has 6 states, 6 states have (on average 196.33333333333334) internal successors, (1178), 6 states have internal predecessors, (1178), 0 states have call successors, (0), 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 21:21:05,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:05,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 283 [2023-12-05 21:21:05,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:10,977 INFO L124 PetriNetUnfolderBase]: 7496/16699 cut-off events. [2023-12-05 21:21:10,977 INFO L125 PetriNetUnfolderBase]: For 405699/423420 co-relation queries the response was YES. [2023-12-05 21:21:11,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192148 conditions, 16699 events. 7496/16699 cut-off events. For 405699/423420 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 157505 event pairs, 1569 based on Foata normal form. 600/16391 useless extension candidates. Maximal degree in co-relation 170517. Up to 8593 conditions per place. [2023-12-05 21:21:11,256 INFO L140 encePairwiseOnDemand]: 268/283 looper letters, 1292 selfloop transitions, 143 changer transitions 51/1638 dead transitions. [2023-12-05 21:21:11,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 1638 transitions, 52998 flow [2023-12-05 21:21:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:21:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:21:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1336 transitions. [2023-12-05 21:21:11,265 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7868080094228505 [2023-12-05 21:21:11,265 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1336 transitions. [2023-12-05 21:21:11,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1336 transitions. [2023-12-05 21:21:11,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:11,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1336 transitions. [2023-12-05 21:21:11,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 0 states have call successors, (0), 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 21:21:11,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:21:11,284 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:21:11,285 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 30 predicate places. [2023-12-05 21:21:11,285 INFO L500 AbstractCegarLoop]: Abstraction has has 267 places, 1638 transitions, 52998 flow [2023-12-05 21:21:11,285 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.33333333333334) internal successors, (1178), 6 states have internal predecessors, (1178), 0 states have call successors, (0), 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 21:21:11,285 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:11,285 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, 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, 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] [2023-12-05 21:21:11,285 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-05 21:21:11,285 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:21:11,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash 991482731, now seen corresponding path program 1 times [2023-12-05 21:21:11,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:11,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780122902] [2023-12-05 21:21:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:11,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:11,458 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 21:21:11,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:11,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780122902] [2023-12-05 21:21:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780122902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:11,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:11,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:21:11,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218227571] [2023-12-05 21:21:11,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:11,459 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:21:11,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:11,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:21:11,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:21:11,460 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 283 [2023-12-05 21:21:11,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 1638 transitions, 52998 flow. Second operand has 6 states, 6 states have (on average 196.33333333333334) internal successors, (1178), 6 states have internal predecessors, (1178), 0 states have call successors, (0), 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 21:21:11,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:11,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 283 [2023-12-05 21:21:11,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:17,562 INFO L124 PetriNetUnfolderBase]: 7512/17952 cut-off events. [2023-12-05 21:21:17,562 INFO L125 PetriNetUnfolderBase]: For 471321/494033 co-relation queries the response was YES. [2023-12-05 21:21:17,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207656 conditions, 17952 events. 7512/17952 cut-off events. For 471321/494033 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 178136 event pairs, 799 based on Foata normal form. 1024/18068 useless extension candidates. Maximal degree in co-relation 180628. Up to 8845 conditions per place. [2023-12-05 21:21:17,834 INFO L140 encePairwiseOnDemand]: 268/283 looper letters, 1395 selfloop transitions, 204 changer transitions 56/1814 dead transitions. [2023-12-05 21:21:17,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1814 transitions, 62378 flow [2023-12-05 21:21:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:21:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:21:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1340 transitions. [2023-12-05 21:21:17,836 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7891637220259128 [2023-12-05 21:21:17,837 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1340 transitions. [2023-12-05 21:21:17,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1340 transitions. [2023-12-05 21:21:17,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:17,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1340 transitions. [2023-12-05 21:21:17,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 223.33333333333334) internal successors, (1340), 6 states have internal predecessors, (1340), 0 states have call successors, (0), 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 21:21:17,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:21:17,840 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:21:17,841 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 35 predicate places. [2023-12-05 21:21:17,841 INFO L500 AbstractCegarLoop]: Abstraction has has 272 places, 1814 transitions, 62378 flow [2023-12-05 21:21:17,841 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.33333333333334) internal successors, (1178), 6 states have internal predecessors, (1178), 0 states have call successors, (0), 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 21:21:17,841 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:17,841 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, 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, 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] [2023-12-05 21:21:17,841 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-05 21:21:17,841 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:21:17,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash 375197619, now seen corresponding path program 1 times [2023-12-05 21:21:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807392847] [2023-12-05 21:21:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:17,968 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 21:21:17,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807392847] [2023-12-05 21:21:17,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807392847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:17,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:17,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-05 21:21:17,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263195236] [2023-12-05 21:21:17,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:17,970 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-05 21:21:17,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:17,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-05 21:21:17,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-05 21:21:17,971 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 283 [2023-12-05 21:21:17,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 1814 transitions, 62378 flow. Second operand has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 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 21:21:17,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:17,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 283 [2023-12-05 21:21:17,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:24,279 INFO L124 PetriNetUnfolderBase]: 7362/18005 cut-off events. [2023-12-05 21:21:24,280 INFO L125 PetriNetUnfolderBase]: For 490295/510944 co-relation queries the response was YES. [2023-12-05 21:21:24,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215162 conditions, 18005 events. 7362/18005 cut-off events. For 490295/510944 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 180264 event pairs, 851 based on Foata normal form. 908/17983 useless extension candidates. Maximal degree in co-relation 186758. Up to 8811 conditions per place. [2023-12-05 21:21:24,689 INFO L140 encePairwiseOnDemand]: 268/283 looper letters, 1452 selfloop transitions, 169 changer transitions 56/1836 dead transitions. [2023-12-05 21:21:24,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1836 transitions, 66779 flow [2023-12-05 21:21:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:21:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:21:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1335 transitions. [2023-12-05 21:21:24,691 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7862190812720848 [2023-12-05 21:21:24,691 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1335 transitions. [2023-12-05 21:21:24,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1335 transitions. [2023-12-05 21:21:24,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:24,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1335 transitions. [2023-12-05 21:21:24,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 0 states have call successors, (0), 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 21:21:24,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:21:24,695 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:21:24,696 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 40 predicate places. [2023-12-05 21:21:24,696 INFO L500 AbstractCegarLoop]: Abstraction has has 277 places, 1836 transitions, 66779 flow [2023-12-05 21:21:24,696 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 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 21:21:24,696 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:24,696 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, 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, 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] [2023-12-05 21:21:24,697 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-05 21:21:24,697 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:21:24,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:24,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1423294674, now seen corresponding path program 1 times [2023-12-05 21:21:24,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:24,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745331058] [2023-12-05 21:21:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:24,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:24,981 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 21:21:24,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745331058] [2023-12-05 21:21:24,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745331058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:24,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:24,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:21:24,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888753618] [2023-12-05 21:21:24,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:24,981 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:21:24,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:21:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:21:24,983 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 283 [2023-12-05 21:21:24,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 1836 transitions, 66779 flow. Second operand has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:21:24,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:24,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 283 [2023-12-05 21:21:24,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:34,527 INFO L124 PetriNetUnfolderBase]: 11643/27229 cut-off events. [2023-12-05 21:21:34,527 INFO L125 PetriNetUnfolderBase]: For 778795/814338 co-relation queries the response was YES. [2023-12-05 21:21:34,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352864 conditions, 27229 events. 11643/27229 cut-off events. For 778795/814338 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 283986 event pairs, 2078 based on Foata normal form. 1270/26994 useless extension candidates. Maximal degree in co-relation 315182. Up to 13897 conditions per place. [2023-12-05 21:21:35,101 INFO L140 encePairwiseOnDemand]: 264/283 looper letters, 2032 selfloop transitions, 268 changer transitions 90/2542 dead transitions. [2023-12-05 21:21:35,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 2542 transitions, 99573 flow [2023-12-05 21:21:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-05 21:21:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-05 21:21:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2170 transitions. [2023-12-05 21:21:35,104 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7667844522968198 [2023-12-05 21:21:35,104 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2170 transitions. [2023-12-05 21:21:35,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2170 transitions. [2023-12-05 21:21:35,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:35,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2170 transitions. [2023-12-05 21:21:35,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 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) [2023-12-05 21:21:35,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 283.0) internal successors, (3113), 11 states have internal predecessors, (3113), 0 states have call successors, (0), 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 21:21:35,142 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 283.0) internal successors, (3113), 11 states have internal predecessors, (3113), 0 states have call successors, (0), 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 21:21:35,142 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 49 predicate places. [2023-12-05 21:21:35,142 INFO L500 AbstractCegarLoop]: Abstraction has has 286 places, 2542 transitions, 99573 flow [2023-12-05 21:21:35,143 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:21:35,143 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:35,143 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, 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, 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] [2023-12-05 21:21:35,143 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-05 21:21:35,143 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:21:35,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1902491217, now seen corresponding path program 1 times [2023-12-05 21:21:35,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:35,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189396319] [2023-12-05 21:21:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:35,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:35,315 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 21:21:35,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189396319] [2023-12-05 21:21:35,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189396319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:35,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:35,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:21:35,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84983586] [2023-12-05 21:21:35,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:35,316 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:21:35,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:35,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:21:35,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:21:35,317 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 283 [2023-12-05 21:21:35,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 2542 transitions, 99573 flow. Second operand has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 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 21:21:35,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:35,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 283 [2023-12-05 21:21:35,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:51,702 INFO L124 PetriNetUnfolderBase]: 17339/40703 cut-off events. [2023-12-05 21:21:51,702 INFO L125 PetriNetUnfolderBase]: For 1127398/1172973 co-relation queries the response was YES. [2023-12-05 21:21:51,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546045 conditions, 40703 events. 17339/40703 cut-off events. For 1127398/1172973 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 448393 event pairs, 2830 based on Foata normal form. 914/39314 useless extension candidates. Maximal degree in co-relation 506653. Up to 20976 conditions per place. [2023-12-05 21:21:52,598 INFO L140 encePairwiseOnDemand]: 271/283 looper letters, 2673 selfloop transitions, 124 changer transitions 90/3049 dead transitions. [2023-12-05 21:21:52,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 3049 transitions, 126462 flow [2023-12-05 21:21:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:21:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:21:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1341 transitions. [2023-12-05 21:21:52,606 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7897526501766784 [2023-12-05 21:21:52,606 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1341 transitions. [2023-12-05 21:21:52,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1341 transitions. [2023-12-05 21:21:52,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:52,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1341 transitions. [2023-12-05 21:21:52,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 223.5) internal successors, (1341), 6 states have internal predecessors, (1341), 0 states have call successors, (0), 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 21:21:52,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:21:52,610 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 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 21:21:52,610 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 54 predicate places. [2023-12-05 21:21:52,610 INFO L500 AbstractCegarLoop]: Abstraction has has 291 places, 3049 transitions, 126462 flow [2023-12-05 21:21:52,611 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 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 21:21:52,611 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:52,611 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, 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, 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] [2023-12-05 21:21:52,611 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-05 21:21:52,611 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:21:52,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:52,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1452098446, now seen corresponding path program 2 times [2023-12-05 21:21:52,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:52,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398509077] [2023-12-05 21:21:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:52,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:52,779 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 21:21:52,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:52,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398509077] [2023-12-05 21:21:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398509077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:52,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:52,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:21:52,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651979101] [2023-12-05 21:21:52,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:52,780 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:21:52,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:52,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:21:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:21:52,781 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 283 [2023-12-05 21:21:52,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 3049 transitions, 126462 flow. Second operand has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:21:52,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:52,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 283 [2023-12-05 21:21:52,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:22:14,755 INFO L124 PetriNetUnfolderBase]: 18656/42454 cut-off events. [2023-12-05 21:22:14,756 INFO L125 PetriNetUnfolderBase]: For 1339004/1401453 co-relation queries the response was YES. [2023-12-05 21:22:14,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614025 conditions, 42454 events. 18656/42454 cut-off events. For 1339004/1401453 co-relation queries the response was YES. Maximal size of possible extension queue 1520. Compared 464252 event pairs, 5144 based on Foata normal form. 1731/41636 useless extension candidates. Maximal degree in co-relation 587689. Up to 22568 conditions per place. [2023-12-05 21:22:15,703 INFO L140 encePairwiseOnDemand]: 262/283 looper letters, 2788 selfloop transitions, 510 changer transitions 124/3576 dead transitions. [2023-12-05 21:22:15,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 3576 transitions, 155982 flow [2023-12-05 21:22:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-05 21:22:15,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-05 21:22:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3243 transitions. [2023-12-05 21:22:15,708 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7639575971731449 [2023-12-05 21:22:15,708 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3243 transitions. [2023-12-05 21:22:15,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3243 transitions. [2023-12-05 21:22:15,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:22:15,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3243 transitions. [2023-12-05 21:22:15,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 216.2) internal successors, (3243), 15 states have internal predecessors, (3243), 0 states have call successors, (0), 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 21:22:15,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 283.0) internal successors, (4528), 16 states have internal predecessors, (4528), 0 states have call successors, (0), 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 21:22:15,732 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 283.0) internal successors, (4528), 16 states have internal predecessors, (4528), 0 states have call successors, (0), 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 21:22:15,748 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 68 predicate places. [2023-12-05 21:22:15,748 INFO L500 AbstractCegarLoop]: Abstraction has has 305 places, 3576 transitions, 155982 flow [2023-12-05 21:22:15,748 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:22:15,748 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:22:15,748 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, 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, 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] [2023-12-05 21:22:15,748 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-05 21:22:15,749 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:22:15,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:22:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1397289442, now seen corresponding path program 3 times [2023-12-05 21:22:15,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:22:15,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710649705] [2023-12-05 21:22:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:22:15,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:22:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:22:15,932 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 21:22:15,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:22:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710649705] [2023-12-05 21:22:15,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710649705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:22:15,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:22:15,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:22:15,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523587259] [2023-12-05 21:22:15,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:22:15,934 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:22:15,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:22:15,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:22:15,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:22:15,935 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 283 [2023-12-05 21:22:15,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 3576 transitions, 155982 flow. Second operand has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:22:15,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:22:15,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 283 [2023-12-05 21:22:15,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:22:39,474 INFO L124 PetriNetUnfolderBase]: 18599/42483 cut-off events. [2023-12-05 21:22:39,474 INFO L125 PetriNetUnfolderBase]: For 1435670/1491172 co-relation queries the response was YES. [2023-12-05 21:22:39,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638408 conditions, 42483 events. 18599/42483 cut-off events. For 1435670/1491172 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 465374 event pairs, 4582 based on Foata normal form. 1007/40940 useless extension candidates. Maximal degree in co-relation 610874. Up to 22508 conditions per place. [2023-12-05 21:22:40,567 INFO L140 encePairwiseOnDemand]: 268/283 looper letters, 2929 selfloop transitions, 350 changer transitions 139/3572 dead transitions. [2023-12-05 21:22:40,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 3572 transitions, 162757 flow [2023-12-05 21:22:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-05 21:22:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-05 21:22:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1962 transitions. [2023-12-05 21:22:40,570 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7703180212014135 [2023-12-05 21:22:40,570 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1962 transitions. [2023-12-05 21:22:40,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1962 transitions. [2023-12-05 21:22:40,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:22:40,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1962 transitions. [2023-12-05 21:22:40,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.0) internal successors, (1962), 9 states have internal predecessors, (1962), 0 states have call successors, (0), 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 21:22:40,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 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 21:22:40,592 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 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 21:22:40,592 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 74 predicate places. [2023-12-05 21:22:40,592 INFO L500 AbstractCegarLoop]: Abstraction has has 311 places, 3572 transitions, 162757 flow [2023-12-05 21:22:40,593 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:22:40,593 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:22:40,593 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, 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, 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] [2023-12-05 21:22:40,593 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-05 21:22:40,593 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:22:40,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:22:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1114985527, now seen corresponding path program 2 times [2023-12-05 21:22:40,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:22:40,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044187878] [2023-12-05 21:22:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:22:40,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:22:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:22:40,791 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 21:22:40,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:22:40,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044187878] [2023-12-05 21:22:40,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044187878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:22:40,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:22:40,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:22:40,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061204733] [2023-12-05 21:22:40,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:22:40,792 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:22:40,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:22:40,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:22:40,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:22:40,793 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 283 [2023-12-05 21:22:40,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 3572 transitions, 162757 flow. Second operand has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:22:40,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:22:40,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 283 [2023-12-05 21:22:40,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:23:09,334 INFO L124 PetriNetUnfolderBase]: 20236/46457 cut-off events. [2023-12-05 21:23:09,334 INFO L125 PetriNetUnfolderBase]: For 1707456/1769678 co-relation queries the response was YES. [2023-12-05 21:23:09,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720700 conditions, 46457 events. 20236/46457 cut-off events. For 1707456/1769678 co-relation queries the response was YES. Maximal size of possible extension queue 1747. Compared 519331 event pairs, 4298 based on Foata normal form. 1290/44982 useless extension candidates. Maximal degree in co-relation 670268. Up to 24171 conditions per place. [2023-12-05 21:23:10,566 INFO L140 encePairwiseOnDemand]: 268/283 looper letters, 3354 selfloop transitions, 385 changer transitions 139/4050 dead transitions. [2023-12-05 21:23:10,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 4050 transitions, 193181 flow [2023-12-05 21:23:10,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-05 21:23:10,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-05 21:23:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1958 transitions. [2023-12-05 21:23:10,568 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7687475461327051 [2023-12-05 21:23:10,568 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1958 transitions. [2023-12-05 21:23:10,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1958 transitions. [2023-12-05 21:23:10,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:23:10,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1958 transitions. [2023-12-05 21:23:10,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 217.55555555555554) internal successors, (1958), 9 states have internal predecessors, (1958), 0 states have call successors, (0), 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 21:23:10,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 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 21:23:10,573 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 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 21:23:10,573 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 82 predicate places. [2023-12-05 21:23:10,573 INFO L500 AbstractCegarLoop]: Abstraction has has 319 places, 4050 transitions, 193181 flow [2023-12-05 21:23:10,573 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:23:10,573 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:23:10,573 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, 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, 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] [2023-12-05 21:23:10,573 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-05 21:23:10,573 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:23:10,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:23:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1348660634, now seen corresponding path program 1 times [2023-12-05 21:23:10,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:23:10,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966232311] [2023-12-05 21:23:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:23:10,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:23:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:23:10,753 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 21:23:10,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:23:10,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966232311] [2023-12-05 21:23:10,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966232311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:23:10,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:23:10,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:23:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567071539] [2023-12-05 21:23:10,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:23:10,754 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:23:10,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:23:10,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:23:10,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:23:10,755 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 283 [2023-12-05 21:23:10,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 4050 transitions, 193181 flow. Second operand has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:23:10,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:23:10,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 283 [2023-12-05 21:23:10,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:23:46,694 INFO L124 PetriNetUnfolderBase]: 24154/56412 cut-off events. [2023-12-05 21:23:46,694 INFO L125 PetriNetUnfolderBase]: For 2136078/2202479 co-relation queries the response was YES. [2023-12-05 21:23:47,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892532 conditions, 56412 events. 24154/56412 cut-off events. For 2136078/2202479 co-relation queries the response was YES. Maximal size of possible extension queue 2097. Compared 653859 event pairs, 2882 based on Foata normal form. 1302/54438 useless extension candidates. Maximal degree in co-relation 837401. Up to 28892 conditions per place. [2023-12-05 21:23:48,269 INFO L140 encePairwiseOnDemand]: 265/283 looper letters, 3805 selfloop transitions, 618 changer transitions 160/4755 dead transitions. [2023-12-05 21:23:48,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 4755 transitions, 237482 flow [2023-12-05 21:23:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-05 21:23:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-05 21:23:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2169 transitions. [2023-12-05 21:23:48,271 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7664310954063605 [2023-12-05 21:23:48,271 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2169 transitions. [2023-12-05 21:23:48,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2169 transitions. [2023-12-05 21:23:48,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:23:48,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2169 transitions. [2023-12-05 21:23:48,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 216.9) internal successors, (2169), 10 states have internal predecessors, (2169), 0 states have call successors, (0), 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 21:23:48,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 283.0) internal successors, (3113), 11 states have internal predecessors, (3113), 0 states have call successors, (0), 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 21:23:48,275 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 283.0) internal successors, (3113), 11 states have internal predecessors, (3113), 0 states have call successors, (0), 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 21:23:48,275 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 91 predicate places. [2023-12-05 21:23:48,275 INFO L500 AbstractCegarLoop]: Abstraction has has 328 places, 4755 transitions, 237482 flow [2023-12-05 21:23:48,276 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:23:48,276 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:23:48,276 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, 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, 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] [2023-12-05 21:23:48,276 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-05 21:23:48,276 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-12-05 21:23:48,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:23:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1107583121, now seen corresponding path program 3 times [2023-12-05 21:23:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:23:48,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049766177] [2023-12-05 21:23:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:23:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:23:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:23:48,431 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 21:23:48,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:23:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049766177] [2023-12-05 21:23:48,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049766177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:23:48,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:23:48,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:23:48,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845759817] [2023-12-05 21:23:48,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:23:48,431 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:23:48,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:23:48,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:23:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:23:48,433 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 283 [2023-12-05 21:23:48,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 4755 transitions, 237482 flow. Second operand has 7 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 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 21:23:48,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:23:48,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 283 [2023-12-05 21:23:48,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-05 21:23:59,442 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-05 21:23:59,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-05 21:23:59,463 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 50 remaining) [2023-12-05 21:23:59,464 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-05 21:23:59,464 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). [2023-12-05 21:23:59,465 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2023-12-05 21:23:59,465 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2023-12-05 21:23:59,465 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2023-12-05 21:23:59,465 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2023-12-05 21:23:59,465 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 50 remaining) [2023-12-05 21:23:59,466 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2023-12-05 21:23:59,468 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 50 remaining) [2023-12-05 21:23:59,469 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2023-12-05 21:23:59,470 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Thread1of1ForFork4Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 50 remaining) [2023-12-05 21:23:59,471 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Thread1of1ForFork4Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 50 remaining) [2023-12-05 21:23:59,475 INFO L457 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:23:59,495 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:23:59,495 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:23:59,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:23:59 BasicIcfg [2023-12-05 21:23:59,498 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:23:59,498 INFO L158 Benchmark]: Toolchain (without parser) took 236457.49ms. Allocated memory was 183.5MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 136.3MB in the beginning and 5.4GB in the end (delta: -5.2GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-12-05 21:23:59,498 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:23:59,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.85ms. Allocated memory is still 183.5MB. Free memory was 136.3MB in the beginning and 123.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-05 21:23:59,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.19ms. Allocated memory is still 183.5MB. Free memory was 123.7MB in the beginning and 121.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:23:59,498 INFO L158 Benchmark]: Boogie Preprocessor took 19.95ms. Allocated memory is still 183.5MB. Free memory was 121.3MB in the beginning and 119.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:23:59,499 INFO L158 Benchmark]: RCFGBuilder took 635.42ms. Allocated memory was 183.5MB in the beginning and 328.2MB in the end (delta: 144.7MB). Free memory was 119.2MB in the beginning and 299.5MB in the end (delta: -180.3MB). Peak memory consumption was 38.9MB. Max. memory is 8.0GB. [2023-12-05 21:23:59,512 INFO L158 Benchmark]: TraceAbstraction took 235518.39ms. Allocated memory was 328.2MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 298.4MB in the beginning and 5.4GB in the end (delta: -5.1GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-12-05 21:23:59,516 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.85ms. Allocated memory is still 183.5MB. Free memory was 136.3MB in the beginning and 123.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.19ms. Allocated memory is still 183.5MB. Free memory was 123.7MB in the beginning and 121.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.95ms. Allocated memory is still 183.5MB. Free memory was 121.3MB in the beginning and 119.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 635.42ms. Allocated memory was 183.5MB in the beginning and 328.2MB in the end (delta: 144.7MB). Free memory was 119.2MB in the beginning and 299.5MB in the end (delta: -180.3MB). Peak memory consumption was 38.9MB. Max. memory is 8.0GB. * TraceAbstraction took 235518.39ms. Allocated memory was 328.2MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 298.4MB in the beginning and 5.4GB in the end (delta: -5.1GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 194/283 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 287121 conditions, 17624 events (7199/17623 cut-off events. For 595775/617517 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 195986 event pairs, 1692 based on Foata normal form. 172/17612 useless extension candidates. Maximal degree in co-relation 285322. Up to 10032 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 382 locations, 50 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 235.3s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 231.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2341 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2341 mSDsluCounter, 602 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 345 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5605 IncrementalHoareTripleChecker+Invalid, 5950 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 345 mSolverCounterUnsat, 523 mSDtfsCounter, 5605 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237482occurred in iteration=25, InterpolantAutomatonStates: 132, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 3022 NumberOfCodeBlocks, 3022 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2996 ConstructedInterpolants, 0 QuantifiedInterpolants, 13155 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-05 21:23:59,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-12-05 21:23:59.740 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8784dba/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438)