/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:48:45,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:48:45,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 19:48:45,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:48:45,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:48:45,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:48:45,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:48:45,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:48:45,720 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:48:45,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:48:45,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:48:45,724 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:48:45,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:48:45,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:48:45,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:48:45,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:48:45,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:48:45,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:48:45,726 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:48:45,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:48:45,726 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:48:45,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:48:45,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:48:45,729 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:48:45,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:48:45,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:48:45,730 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:48:45,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:48:45,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:48:45,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:48:45,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:48:45,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:48:45,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:48:45,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:48:45,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:48:45,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:48:45,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:48:45,982 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:48:45,984 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:48:45,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-29 19:48:47,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:48:47,349 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:48:47,349 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-29 19:48:47,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2601535b9/9b0b5b16f64e4c5197ff6ed1d006b0d5/FLAGc3c2eb815 [2023-11-29 19:48:47,383 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2601535b9/9b0b5b16f64e4c5197ff6ed1d006b0d5 [2023-11-29 19:48:47,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:48:47,387 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:48:47,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:48:47,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:48:47,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:48:47,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:47,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f87767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47, skipping insertion in model container [2023-11-29 19:48:47,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:47,433 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:48:47,591 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-11-29 19:48:47,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:48:47,876 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:48:47,886 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-11-29 19:48:47,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:48:47,998 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:48:47,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47 WrapperNode [2023-11-29 19:48:47,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:48:48,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:48:48,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:48:48,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:48:48,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,035 INFO L138 Inliner]: procedures = 365, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-11-29 19:48:48,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:48:48,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:48:48,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:48:48,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:48:48,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,048 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,053 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:48:48,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:48:48,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:48:48,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:48:48,068 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (1/1) ... [2023-11-29 19:48:48,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:48:48,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:48:48,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 19:48:48,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 19:48:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:48:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:48:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 19:48:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 19:48:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:48:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 19:48:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:48:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-11-29 19:48:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-11-29 19:48:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:48:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:48:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:48:48,128 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:48:48,234 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:48:48,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:48:48,412 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:48:48,433 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:48:48,433 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 19:48:48,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:48:48 BoogieIcfgContainer [2023-11-29 19:48:48,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:48:48,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:48:48,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:48:48,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:48:48,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:48:47" (1/3) ... [2023-11-29 19:48:48,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6d1164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:48:48, skipping insertion in model container [2023-11-29 19:48:48,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:48:47" (2/3) ... [2023-11-29 19:48:48,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6d1164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:48:48, skipping insertion in model container [2023-11-29 19:48:48,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:48:48" (3/3) ... [2023-11-29 19:48:48,441 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-11-29 19:48:48,453 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:48:48,454 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 19:48:48,454 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:48:48,489 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 19:48:48,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 90 transitions, 187 flow [2023-11-29 19:48:48,551 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-29 19:48:48,552 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:48:48,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 7/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-29 19:48:48,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 90 transitions, 187 flow [2023-11-29 19:48:48,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 78 transitions, 162 flow [2023-11-29 19:48:48,567 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:48:48,572 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;@4f88701a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:48:48,572 INFO L363 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 19:48:48,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:48:48,591 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-11-29 19:48:48,592 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:48:48,592 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:48:48,592 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:48:48,593 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:48:48,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:48:48,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1977027613, now seen corresponding path program 1 times [2023-11-29 19:48:48,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:48:48,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190951690] [2023-11-29 19:48:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:48:48,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:48:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:48:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:48:48,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:48:48,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190951690] [2023-11-29 19:48:48,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190951690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:48:48,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:48:48,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:48:48,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373881133] [2023-11-29 19:48:48,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:48:48,877 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:48:48,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:48:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:48:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:48:48,900 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2023-11-29 19:48:48,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:48,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:48:48,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2023-11-29 19:48:48,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:48:48,964 INFO L124 PetriNetUnfolderBase]: 26/142 cut-off events. [2023-11-29 19:48:48,964 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 19:48:48,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 142 events. 26/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 511 event pairs, 12 based on Foata normal form. 16/152 useless extension candidates. Maximal degree in co-relation 167. Up to 40 conditions per place. [2023-11-29 19:48:48,967 INFO L140 encePairwiseOnDemand]: 83/90 looper letters, 18 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-11-29 19:48:48,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 204 flow [2023-11-29 19:48:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 19:48:48,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 19:48:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-29 19:48:48,978 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8555555555555555 [2023-11-29 19:48:48,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-29 19:48:48,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-29 19:48:48,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:48:48,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-29 19:48:48,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:48,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:48,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:48,995 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2023-11-29 19:48:48,996 INFO L500 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 204 flow [2023-11-29 19:48:48,996 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:48,996 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:48:48,997 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:48:48,997 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:48:48,997 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:48:48,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:48:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2007060445, now seen corresponding path program 1 times [2023-11-29 19:48:48,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:48:49,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100309732] [2023-11-29 19:48:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:48:49,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:48:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:48:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 19:48:49,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:48:49,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100309732] [2023-11-29 19:48:49,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100309732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:48:49,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:48:49,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:48:49,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141125357] [2023-11-29 19:48:49,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:48:49,192 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:48:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:48:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:48:49,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:48:49,194 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2023-11-29 19:48:49,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:49,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:48:49,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2023-11-29 19:48:49,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:48:49,334 INFO L124 PetriNetUnfolderBase]: 100/421 cut-off events. [2023-11-29 19:48:49,334 INFO L125 PetriNetUnfolderBase]: For 72/95 co-relation queries the response was YES. [2023-11-29 19:48:49,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 421 events. 100/421 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1934 event pairs, 50 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 719. Up to 107 conditions per place. [2023-11-29 19:48:49,341 INFO L140 encePairwiseOnDemand]: 87/90 looper letters, 25 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-29 19:48:49,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 296 flow [2023-11-29 19:48:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 19:48:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 19:48:49,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-11-29 19:48:49,347 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2023-11-29 19:48:49,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-11-29 19:48:49,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-11-29 19:48:49,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:48:49,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-11-29 19:48:49,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:49,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:49,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:49,353 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-11-29 19:48:49,353 INFO L500 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 296 flow [2023-11-29 19:48:49,353 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:49,354 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:48:49,354 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:48:49,354 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:48:49,354 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:48:49,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:48:49,356 INFO L85 PathProgramCache]: Analyzing trace with hash 997576006, now seen corresponding path program 1 times [2023-11-29 19:48:49,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:48:49,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855437618] [2023-11-29 19:48:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:48:49,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:48:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:48:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:48:49,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:48:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855437618] [2023-11-29 19:48:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855437618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:48:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550169963] [2023-11-29 19:48:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:48:49,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:48:49,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:48:49,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:48:49,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 19:48:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:48:49,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 19:48:49,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:48:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:48:49,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:48:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:48:49,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550169963] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:48:49,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:48:49,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 19:48:49,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634302900] [2023-11-29 19:48:49,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:48:49,853 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 19:48:49,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:48:49,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 19:48:49,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 19:48:49,855 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2023-11-29 19:48:49,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 296 flow. Second operand has 10 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:49,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:48:49,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2023-11-29 19:48:49,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:48:50,026 INFO L124 PetriNetUnfolderBase]: 144/569 cut-off events. [2023-11-29 19:48:50,026 INFO L125 PetriNetUnfolderBase]: For 307/395 co-relation queries the response was YES. [2023-11-29 19:48:50,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 569 events. 144/569 cut-off events. For 307/395 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2672 event pairs, 47 based on Foata normal form. 5/532 useless extension candidates. Maximal degree in co-relation 1304. Up to 199 conditions per place. [2023-11-29 19:48:50,034 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 53 selfloop transitions, 9 changer transitions 0/124 dead transitions. [2023-11-29 19:48:50,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 608 flow [2023-11-29 19:48:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:48:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:48:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 663 transitions. [2023-11-29 19:48:50,037 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8185185185185185 [2023-11-29 19:48:50,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 663 transitions. [2023-11-29 19:48:50,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 663 transitions. [2023-11-29 19:48:50,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:48:50,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 663 transitions. [2023-11-29 19:48:50,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.66666666666667) internal successors, (663), 9 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:50,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:50,042 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:50,043 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2023-11-29 19:48:50,043 INFO L500 AbstractCegarLoop]: Abstraction has has 86 places, 124 transitions, 608 flow [2023-11-29 19:48:50,044 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:50,044 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:48:50,045 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:48:50,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 19:48:50,250 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:48:50,250 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:48:50,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:48:50,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2131734334, now seen corresponding path program 2 times [2023-11-29 19:48:50,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:48:50,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571651026] [2023-11-29 19:48:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:48:50,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:48:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:48:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 19:48:50,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:48:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571651026] [2023-11-29 19:48:50,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571651026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:48:50,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:48:50,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:48:50,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695416085] [2023-11-29 19:48:50,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:48:50,403 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:48:50,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:48:50,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:48:50,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:48:50,407 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2023-11-29 19:48:50,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 124 transitions, 608 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:50,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:48:50,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2023-11-29 19:48:50,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:48:50,486 INFO L124 PetriNetUnfolderBase]: 126/540 cut-off events. [2023-11-29 19:48:50,486 INFO L125 PetriNetUnfolderBase]: For 673/725 co-relation queries the response was YES. [2023-11-29 19:48:50,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 540 events. 126/540 cut-off events. For 673/725 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2416 event pairs, 41 based on Foata normal form. 13/508 useless extension candidates. Maximal degree in co-relation 1329. Up to 183 conditions per place. [2023-11-29 19:48:50,490 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 8 selfloop transitions, 44 changer transitions 0/124 dead transitions. [2023-11-29 19:48:50,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 124 transitions, 712 flow [2023-11-29 19:48:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 19:48:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 19:48:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-11-29 19:48:50,492 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8296296296296296 [2023-11-29 19:48:50,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-11-29 19:48:50,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-11-29 19:48:50,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:48:50,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-11-29 19:48:50,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:50,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:50,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:50,495 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2023-11-29 19:48:50,496 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 124 transitions, 712 flow [2023-11-29 19:48:50,496 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:50,496 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:48:50,498 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:48:50,498 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:48:50,498 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:48:50,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:48:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash -456214806, now seen corresponding path program 3 times [2023-11-29 19:48:50,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:48:50,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211856332] [2023-11-29 19:48:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:48:50,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:48:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:48:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 19:48:50,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:48:50,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211856332] [2023-11-29 19:48:50,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211856332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:48:50,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683628409] [2023-11-29 19:48:50,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 19:48:50,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:48:50,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:48:50,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:48:50,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 19:48:50,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 19:48:50,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:48:50,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 19:48:50,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:48:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 19:48:50,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:48:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 19:48:51,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683628409] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:48:51,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:48:51,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-29 19:48:51,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174900853] [2023-11-29 19:48:51,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:48:51,021 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 19:48:51,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:48:51,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 19:48:51,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 19:48:51,024 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 90 [2023-11-29 19:48:51,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 124 transitions, 712 flow. Second operand has 19 states, 19 states have (on average 64.21052631578948) internal successors, (1220), 19 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:51,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:48:51,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 90 [2023-11-29 19:48:51,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:48:53,454 INFO L124 PetriNetUnfolderBase]: 812/2462 cut-off events. [2023-11-29 19:48:53,455 INFO L125 PetriNetUnfolderBase]: For 3154/3174 co-relation queries the response was YES. [2023-11-29 19:48:53,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7577 conditions, 2462 events. 812/2462 cut-off events. For 3154/3174 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 14034 event pairs, 32 based on Foata normal form. 8/2399 useless extension candidates. Maximal degree in co-relation 7512. Up to 823 conditions per place. [2023-11-29 19:48:53,485 INFO L140 encePairwiseOnDemand]: 79/90 looper letters, 433 selfloop transitions, 205 changer transitions 0/689 dead transitions. [2023-11-29 19:48:53,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 689 transitions, 5414 flow [2023-11-29 19:48:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-11-29 19:48:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2023-11-29 19:48:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 6714 transitions. [2023-11-29 19:48:53,521 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7386138613861386 [2023-11-29 19:48:53,521 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 6714 transitions. [2023-11-29 19:48:53,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 6714 transitions. [2023-11-29 19:48:53,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:48:53,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 6714 transitions. [2023-11-29 19:48:53,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 66.47524752475248) internal successors, (6714), 101 states have internal predecessors, (6714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:53,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 90.0) internal successors, (9180), 102 states have internal predecessors, (9180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:53,600 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 90.0) internal successors, (9180), 102 states have internal predecessors, (9180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:53,608 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 112 predicate places. [2023-11-29 19:48:53,608 INFO L500 AbstractCegarLoop]: Abstraction has has 188 places, 689 transitions, 5414 flow [2023-11-29 19:48:53,608 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.21052631578948) internal successors, (1220), 19 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:53,609 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:48:53,609 INFO L232 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:48:53,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 19:48:53,815 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:48:53,815 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:48:53,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:48:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1373272486, now seen corresponding path program 4 times [2023-11-29 19:48:53,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:48:53,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300919140] [2023-11-29 19:48:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:48:53,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:48:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:48:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-29 19:48:54,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:48:54,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300919140] [2023-11-29 19:48:54,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300919140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:48:54,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27182045] [2023-11-29 19:48:54,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 19:48:54,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:48:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:48:54,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:48:54,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 19:48:54,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 19:48:54,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:48:54,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 19:48:54,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:48:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-29 19:48:54,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:48:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-29 19:48:54,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27182045] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:48:54,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:48:54,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-29 19:48:54,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824168234] [2023-11-29 19:48:54,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:48:54,524 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 19:48:54,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:48:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 19:48:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-29 19:48:54,526 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2023-11-29 19:48:54,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 689 transitions, 5414 flow. Second operand has 14 states, 14 states have (on average 70.0) internal successors, (980), 14 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:54,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:48:54,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2023-11-29 19:48:54,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:48:55,604 INFO L124 PetriNetUnfolderBase]: 1414/4222 cut-off events. [2023-11-29 19:48:55,604 INFO L125 PetriNetUnfolderBase]: For 8947/9023 co-relation queries the response was YES. [2023-11-29 19:48:55,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14830 conditions, 4222 events. 1414/4222 cut-off events. For 8947/9023 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 27333 event pairs, 72 based on Foata normal form. 14/4149 useless extension candidates. Maximal degree in co-relation 14760. Up to 1415 conditions per place. [2023-11-29 19:48:55,638 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 600 selfloop transitions, 300 changer transitions 0/1111 dead transitions. [2023-11-29 19:48:55,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1111 transitions, 10958 flow [2023-11-29 19:48:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 19:48:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 19:48:55,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1073 transitions. [2023-11-29 19:48:55,663 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7948148148148149 [2023-11-29 19:48:55,663 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1073 transitions. [2023-11-29 19:48:55,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1073 transitions. [2023-11-29 19:48:55,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:48:55,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1073 transitions. [2023-11-29 19:48:55,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 71.53333333333333) internal successors, (1073), 15 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:55,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 90.0) internal successors, (1440), 16 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:55,674 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 90.0) internal successors, (1440), 16 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:55,676 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 126 predicate places. [2023-11-29 19:48:55,677 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 1111 transitions, 10958 flow [2023-11-29 19:48:55,677 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 70.0) internal successors, (980), 14 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:55,677 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:48:55,677 INFO L232 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:48:55,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 19:48:55,883 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:48:55,884 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:48:55,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:48:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1808596898, now seen corresponding path program 5 times [2023-11-29 19:48:55,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:48:55,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749111700] [2023-11-29 19:48:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:48:55,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:48:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:48:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 13 proven. 95 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-29 19:48:56,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:48:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749111700] [2023-11-29 19:48:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749111700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:48:56,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459309104] [2023-11-29 19:48:56,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 19:48:56,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:48:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:48:56,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:48:56,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 19:48:56,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-29 19:48:56,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:48:56,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 19:48:56,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:48:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 9 proven. 259 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 19:48:56,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:48:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 9 proven. 259 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 19:48:57,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459309104] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:48:57,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:48:57,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 43 [2023-11-29 19:48:57,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657460768] [2023-11-29 19:48:57,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:48:57,417 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 19:48:57,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:48:57,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 19:48:57,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1487, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 19:48:57,421 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 90 [2023-11-29 19:48:57,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 1111 transitions, 10958 flow. Second operand has 43 states, 43 states have (on average 63.395348837209305) internal successors, (2726), 43 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:48:57,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:48:57,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 90 [2023-11-29 19:48:57,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:49:37,496 INFO L124 PetriNetUnfolderBase]: 3728/11089 cut-off events. [2023-11-29 19:49:37,497 INFO L125 PetriNetUnfolderBase]: For 30022/30270 co-relation queries the response was YES. [2023-11-29 19:49:37,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47134 conditions, 11089 events. 3728/11089 cut-off events. For 30022/30270 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 79357 event pairs, 35 based on Foata normal form. 56/11003 useless extension candidates. Maximal degree in co-relation 47059. Up to 4039 conditions per place. [2023-11-29 19:49:37,573 INFO L140 encePairwiseOnDemand]: 79/90 looper letters, 2305 selfloop transitions, 1649 changer transitions 0/4005 dead transitions. [2023-11-29 19:49:37,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 4005 transitions, 46662 flow [2023-11-29 19:49:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 749 states. [2023-11-29 19:49:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2023-11-29 19:49:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 48614 transitions. [2023-11-29 19:49:37,626 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7211689660287791 [2023-11-29 19:49:37,628 INFO L72 ComplementDD]: Start complementDD. Operand 749 states and 48614 transitions. [2023-11-29 19:49:37,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 749 states and 48614 transitions. [2023-11-29 19:49:37,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:49:37,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 749 states and 48614 transitions. [2023-11-29 19:49:37,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 750 states, 749 states have (on average 64.90520694259013) internal successors, (48614), 749 states have internal predecessors, (48614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:37,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 750 states, 750 states have (on average 90.0) internal successors, (67500), 750 states have internal predecessors, (67500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:37,848 INFO L81 ComplementDD]: Finished complementDD. Result has 750 states, 750 states have (on average 90.0) internal successors, (67500), 750 states have internal predecessors, (67500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:37,849 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 874 predicate places. [2023-11-29 19:49:37,849 INFO L500 AbstractCegarLoop]: Abstraction has has 950 places, 4005 transitions, 46662 flow [2023-11-29 19:49:37,850 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 63.395348837209305) internal successors, (2726), 43 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:37,850 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:49:37,850 INFO L232 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:49:37,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 19:49:38,056 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:49:38,057 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:49:38,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:49:38,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2130969948, now seen corresponding path program 6 times [2023-11-29 19:49:38,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:49:38,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975957213] [2023-11-29 19:49:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:49:38,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:49:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:49:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 29 proven. 141 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-11-29 19:49:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:49:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975957213] [2023-11-29 19:49:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975957213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:49:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881834028] [2023-11-29 19:49:38,557 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 19:49:38,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:49:38,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:49:38,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:49:38,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 19:49:38,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-29 19:49:38,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:49:38,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 19:49:38,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:49:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 29 proven. 141 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-11-29 19:49:39,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:49:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 29 proven. 141 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-11-29 19:49:39,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881834028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:49:39,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:49:39,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2023-11-29 19:49:39,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18990708] [2023-11-29 19:49:39,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:49:39,384 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 19:49:39,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:49:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 19:49:39,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2023-11-29 19:49:39,386 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2023-11-29 19:49:39,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 950 places, 4005 transitions, 46662 flow. Second operand has 30 states, 30 states have (on average 70.0) internal successors, (2100), 30 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:39,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:49:39,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2023-11-29 19:49:39,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:49:46,575 INFO L124 PetriNetUnfolderBase]: 7030/21029 cut-off events. [2023-11-29 19:49:46,575 INFO L125 PetriNetUnfolderBase]: For 83867/84404 co-relation queries the response was YES. [2023-11-29 19:49:46,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97975 conditions, 21029 events. 7030/21029 cut-off events. For 83867/84404 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 171457 event pairs, 151 based on Foata normal form. 90/20933 useless extension candidates. Maximal degree in co-relation 97895. Up to 7583 conditions per place. [2023-11-29 19:49:46,711 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 3672 selfloop transitions, 2028 changer transitions 0/6839 dead transitions. [2023-11-29 19:49:46,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 988 places, 6839 transitions, 94566 flow [2023-11-29 19:49:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 19:49:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-29 19:49:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2781 transitions. [2023-11-29 19:49:46,714 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7923076923076923 [2023-11-29 19:49:46,714 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2781 transitions. [2023-11-29 19:49:46,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2781 transitions. [2023-11-29 19:49:46,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:49:46,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2781 transitions. [2023-11-29 19:49:46,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 71.3076923076923) internal successors, (2781), 39 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:46,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 90.0) internal successors, (3600), 40 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:46,722 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 90.0) internal successors, (3600), 40 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:46,722 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 912 predicate places. [2023-11-29 19:49:46,722 INFO L500 AbstractCegarLoop]: Abstraction has has 988 places, 6839 transitions, 94566 flow [2023-11-29 19:49:46,723 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 70.0) internal successors, (2100), 30 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:46,723 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:49:46,723 INFO L232 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:49:46,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 19:49:46,929 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:49:46,930 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:49:46,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:49:46,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1156150684, now seen corresponding path program 7 times [2023-11-29 19:49:46,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:49:46,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754770310] [2023-11-29 19:49:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:49:46,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:49:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:49:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 29 proven. 715 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-11-29 19:49:47,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:49:47,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754770310] [2023-11-29 19:49:47,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754770310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:49:47,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66948150] [2023-11-29 19:49:47,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 19:49:47,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:49:47,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:49:47,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:49:47,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 19:49:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:49:48,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 19:49:48,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:49:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 29 proven. 715 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-11-29 19:49:48,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:49:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 29 proven. 715 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-11-29 19:49:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66948150] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:49:49,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:49:49,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 43 [2023-11-29 19:49:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916187370] [2023-11-29 19:49:49,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:49:49,174 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 19:49:49,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:49:49,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 19:49:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 19:49:49,177 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2023-11-29 19:49:49,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 988 places, 6839 transitions, 94566 flow. Second operand has 43 states, 43 states have (on average 70.06976744186046) internal successors, (3013), 43 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:49:49,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:49:49,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2023-11-29 19:49:49,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:50:07,769 INFO L124 PetriNetUnfolderBase]: 10663/31859 cut-off events. [2023-11-29 19:50:07,769 INFO L125 PetriNetUnfolderBase]: For 180779/181859 co-relation queries the response was YES. [2023-11-29 19:50:07,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162734 conditions, 31859 events. 10663/31859 cut-off events. For 180779/181859 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 275445 event pairs, 285 based on Foata normal form. 244/31867 useless extension candidates. Maximal degree in co-relation 162649. Up to 11617 conditions per place. [2023-11-29 19:50:07,996 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 5660 selfloop transitions, 3120 changer transitions 0/9919 dead transitions. [2023-11-29 19:50:07,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1047 places, 9919 transitions, 158102 flow [2023-11-29 19:50:07,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-29 19:50:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-29 19:50:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4272 transitions. [2023-11-29 19:50:08,001 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2023-11-29 19:50:08,001 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4272 transitions. [2023-11-29 19:50:08,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4272 transitions. [2023-11-29 19:50:08,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:50:08,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4272 transitions. [2023-11-29 19:50:08,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 71.2) internal successors, (4272), 60 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:50:08,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 90.0) internal successors, (5490), 61 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:50:08,016 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 90.0) internal successors, (5490), 61 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:50:08,017 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 971 predicate places. [2023-11-29 19:50:08,017 INFO L500 AbstractCegarLoop]: Abstraction has has 1047 places, 9919 transitions, 158102 flow [2023-11-29 19:50:08,018 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 70.06976744186046) internal successors, (3013), 43 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:50:08,018 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:50:08,018 INFO L232 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:50:08,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 19:50:08,225 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:50:08,225 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:50:08,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:50:08,225 INFO L85 PathProgramCache]: Analyzing trace with hash -301108780, now seen corresponding path program 8 times [2023-11-29 19:50:08,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:50:08,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903378112] [2023-11-29 19:50:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:50:08,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:50:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:50:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 39 proven. 1275 refuted. 0 times theorem prover too weak. 1691 trivial. 0 not checked. [2023-11-29 19:50:09,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:50:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903378112] [2023-11-29 19:50:09,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903378112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:50:09,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336006113] [2023-11-29 19:50:09,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 19:50:09,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:50:09,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:50:09,661 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:50:09,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 19:50:09,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 19:50:09,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:50:09,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 19:50:09,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:50:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 39 proven. 1275 refuted. 0 times theorem prover too weak. 1691 trivial. 0 not checked. [2023-11-29 19:50:10,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:50:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 39 proven. 1275 refuted. 0 times theorem prover too weak. 1691 trivial. 0 not checked. [2023-11-29 19:50:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336006113] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:50:10,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:50:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 43 [2023-11-29 19:50:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10420813] [2023-11-29 19:50:10,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:50:10,725 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 19:50:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:50:10,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 19:50:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 19:50:10,728 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2023-11-29 19:50:10,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1047 places, 9919 transitions, 158102 flow. Second operand has 43 states, 43 states have (on average 72.0) internal successors, (3096), 43 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:50:10,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:50:10,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2023-11-29 19:50:10,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:51:01,801 INFO L124 PetriNetUnfolderBase]: 14053/42667 cut-off events. [2023-11-29 19:51:01,801 INFO L125 PetriNetUnfolderBase]: For 278404/279814 co-relation queries the response was YES. [2023-11-29 19:51:01,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233992 conditions, 42667 events. 14053/42667 cut-off events. For 278404/279814 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 379932 event pairs, 420 based on Foata normal form. 124/42526 useless extension candidates. Maximal degree in co-relation 233904. Up to 15420 conditions per place. [2023-11-29 19:51:02,111 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 6410 selfloop transitions, 1020 changer transitions 0/11799 dead transitions. [2023-11-29 19:51:02,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1106 places, 11799 transitions, 206992 flow [2023-11-29 19:51:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-29 19:51:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-29 19:51:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4389 transitions. [2023-11-29 19:51:02,119 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8127777777777778 [2023-11-29 19:51:02,119 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4389 transitions. [2023-11-29 19:51:02,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4389 transitions. [2023-11-29 19:51:02,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:51:02,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4389 transitions. [2023-11-29 19:51:02,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 73.15) internal successors, (4389), 60 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:51:02,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 90.0) internal successors, (5490), 61 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:51:02,129 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 90.0) internal successors, (5490), 61 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:51:02,130 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 1030 predicate places. [2023-11-29 19:51:02,130 INFO L500 AbstractCegarLoop]: Abstraction has has 1106 places, 11799 transitions, 206992 flow [2023-11-29 19:51:02,130 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 72.0) internal successors, (3096), 43 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:51:02,130 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:51:02,131 INFO L232 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:51:02,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 19:51:02,336 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:51:02,337 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:51:02,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:51:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash 429498681, now seen corresponding path program 9 times [2023-11-29 19:51:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:51:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342330236] [2023-11-29 19:51:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:51:02,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:51:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:51:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:51:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342330236] [2023-11-29 19:51:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342330236] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:51:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915635918] [2023-11-29 19:51:07,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 19:51:07,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:51:07,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:51:07,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:51:07,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 19:51:08,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-11-29 19:51:08,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:51:08,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 168 conjunts are in the unsatisfiable core [2023-11-29 19:51:08,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:51:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:08,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:51:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:09,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915635918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:51:09,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:51:09,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 68 [2023-11-29 19:51:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127039677] [2023-11-29 19:51:09,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:51:09,217 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-29 19:51:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:51:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-29 19:51:09,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4421, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 19:51:09,223 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2023-11-29 19:51:09,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1106 places, 11799 transitions, 206992 flow. Second operand has 68 states, 68 states have (on average 64.54411764705883) internal successors, (4389), 68 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:51:09,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:51:09,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2023-11-29 19:51:09,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:57:03,302 INFO L124 PetriNetUnfolderBase]: 82314/208469 cut-off events. [2023-11-29 19:57:03,302 INFO L125 PetriNetUnfolderBase]: For 1372147/1380405 co-relation queries the response was YES. [2023-11-29 19:57:03,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288585 conditions, 208469 events. 82314/208469 cut-off events. For 1372147/1380405 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 2406711 event pairs, 1011 based on Foata normal form. 6044/203585 useless extension candidates. Maximal degree in co-relation 1288443. Up to 86507 conditions per place. [2023-11-29 19:57:05,221 INFO L140 encePairwiseOnDemand]: 82/90 looper letters, 23031 selfloop transitions, 545 changer transitions 4/29366 dead transitions. [2023-11-29 19:57:05,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1401 places, 29366 transitions, 627192 flow [2023-11-29 19:57:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2023-11-29 19:57:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2023-11-29 19:57:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 19856 transitions. [2023-11-29 19:57:05,239 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7453453453453454 [2023-11-29 19:57:05,239 INFO L72 ComplementDD]: Start complementDD. Operand 296 states and 19856 transitions. [2023-11-29 19:57:05,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 296 states and 19856 transitions. [2023-11-29 19:57:05,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:57:05,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 296 states and 19856 transitions. [2023-11-29 19:57:05,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 297 states, 296 states have (on average 67.08108108108108) internal successors, (19856), 296 states have internal predecessors, (19856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:57:05,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 297 states, 297 states have (on average 90.0) internal successors, (26730), 297 states have internal predecessors, (26730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:57:05,295 INFO L81 ComplementDD]: Finished complementDD. Result has 297 states, 297 states have (on average 90.0) internal successors, (26730), 297 states have internal predecessors, (26730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:57:05,295 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 1325 predicate places. [2023-11-29 19:57:05,296 INFO L500 AbstractCegarLoop]: Abstraction has has 1401 places, 29366 transitions, 627192 flow [2023-11-29 19:57:05,296 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 64.54411764705883) internal successors, (4389), 68 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:57:05,296 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:57:05,297 INFO L232 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:57:05,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 19:57:05,505 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 19:57:05,506 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:57:05,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:57:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash 819917347, now seen corresponding path program 10 times [2023-11-29 19:57:05,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:57:05,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467433403] [2023-11-29 19:57:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:57:05,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:57:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:57:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:57:09,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:57:09,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467433403] [2023-11-29 19:57:09,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467433403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:57:09,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367641091] [2023-11-29 19:57:09,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 19:57:09,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:57:09,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:57:09,894 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:57:09,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 19:57:10,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 19:57:10,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:57:10,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 168 conjunts are in the unsatisfiable core [2023-11-29 19:57:10,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:57:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:57:10,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:57:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:57:11,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367641091] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:57:11,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:57:11,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 69 [2023-11-29 19:57:11,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359106447] [2023-11-29 19:57:11,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:57:11,174 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-11-29 19:57:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:57:11,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-11-29 19:57:11,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4555, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 19:57:11,180 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2023-11-29 19:57:11,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1401 places, 29366 transitions, 627192 flow. Second operand has 69 states, 69 states have (on average 64.5072463768116) internal successors, (4451), 69 states have internal predecessors, (4451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:57:11,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:57:11,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2023-11-29 19:57:11,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 20:02:09,365 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 20:02:09,365 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 [2023-11-29 20:02:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2023-11-29 20:02:09,509 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-29 20:02:09,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 20:02:09,709 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:02:09,710 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (69states, 62/90 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 298382 conditions, 44651 events (18047/44650 cut-off events. For 400577/407018 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 467208 event pairs, 67 based on Foata normal form. 2096/47407 useless extension candidates. Maximal degree in co-relation 298305. Up to 18379 conditions per place.). [2023-11-29 20:02:09,711 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-11-29 20:02:09,712 INFO L457 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2023-11-29 20:02:09,715 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 20:02:09,715 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 20:02:09,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:02:09 BasicIcfg [2023-11-29 20:02:09,720 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 20:02:09,720 INFO L158 Benchmark]: Toolchain (without parser) took 802333.23ms. Allocated memory was 316.7MB in the beginning and 5.3GB in the end (delta: 5.0GB). Free memory was 254.5MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-11-29 20:02:09,720 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 316.7MB. Free memory was 264.2MB in the beginning and 264.1MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 20:02:09,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.84ms. Allocated memory was 316.7MB in the beginning and 438.3MB in the end (delta: 121.6MB). Free memory was 254.2MB in the beginning and 395.5MB in the end (delta: -141.3MB). Peak memory consumption was 39.7MB. Max. memory is 16.0GB. [2023-11-29 20:02:09,721 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.49ms. Allocated memory is still 438.3MB. Free memory was 394.5MB in the beginning and 392.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 20:02:09,721 INFO L158 Benchmark]: Boogie Preprocessor took 29.28ms. Allocated memory is still 438.3MB. Free memory was 392.5MB in the beginning and 391.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 20:02:09,721 INFO L158 Benchmark]: RCFGBuilder took 367.14ms. Allocated memory is still 438.3MB. Free memory was 391.3MB in the beginning and 375.7MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-11-29 20:02:09,721 INFO L158 Benchmark]: TraceAbstraction took 801283.37ms. Allocated memory was 438.3MB in the beginning and 5.3GB in the end (delta: 4.9GB). Free memory was 374.7MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-11-29 20:02:09,723 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 316.7MB. Free memory was 264.2MB in the beginning and 264.1MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 610.84ms. Allocated memory was 316.7MB in the beginning and 438.3MB in the end (delta: 121.6MB). Free memory was 254.2MB in the beginning and 395.5MB in the end (delta: -141.3MB). Peak memory consumption was 39.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.49ms. Allocated memory is still 438.3MB. Free memory was 394.5MB in the beginning and 392.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.28ms. Allocated memory is still 438.3MB. Free memory was 392.5MB in the beginning and 391.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 367.14ms. Allocated memory is still 438.3MB. Free memory was 391.3MB in the beginning and 375.7MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 801283.37ms. Allocated memory was 438.3MB in the beginning and 5.3GB in the end (delta: 4.9GB). Free memory was 374.7MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (69states, 62/90 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 298382 conditions, 44651 events (18047/44650 cut-off events. For 400577/407018 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 467208 event pairs, 67 based on Foata normal form. 2096/47407 useless extension candidates. Maximal degree in co-relation 298305. Up to 18379 conditions per place.). - TimeoutResultAtElement [Line: 1343]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (69states, 62/90 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 298382 conditions, 44651 events (18047/44650 cut-off events. For 400577/407018 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 467208 event pairs, 67 based on Foata normal form. 2096/47407 useless extension candidates. Maximal degree in co-relation 298305. Up to 18379 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 104 locations, 2 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: 801.2s, OverallIterations: 12, TraceHistogramMax: 20, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 776.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13274 SdHoareTripleChecker+Valid, 36.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13274 mSDsluCounter, 4677 SdHoareTripleChecker+Invalid, 29.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4483 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137905 IncrementalHoareTripleChecker+Invalid, 137953 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 194 mSDtfsCounter, 137905 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7294 GetRequests, 5620 SyntacticMatches, 38 SemanticMatches, 1636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342851 ImplicationChecksByTransitivity, 51.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=627192occurred in iteration=11, InterpolantAutomatonStates: 1338, 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: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 5118 NumberOfCodeBlocks, 5073 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 7548 ConstructedInterpolants, 0 QuantifiedInterpolants, 18858 SizeOfPredicates, 178 NumberOfNonLiveVariables, 5987 ConjunctsInSsa, 444 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 14151/45452 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