/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:00:18,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:00:18,133 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:00:18,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:00:18,159 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:00:18,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:00:18,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:00:18,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:00:18,160 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:00:18,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:00:18,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:00:18,164 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:00:18,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:00:18,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:00:18,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:00:18,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:00:18,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:00:18,165 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:00:18,165 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:00:18,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:00:18,166 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:00:18,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:00:18,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:00:18,167 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:00:18,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:00:18,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:00:18,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:00:18,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:00:18,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:00:18,169 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:00:18,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:00:18,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:00:18,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:00:18,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:00:18,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:00:18,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:00:18,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:00:18,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:00:18,386 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:00:18,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-12-09 15:00:19,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:00:19,689 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:00:19,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-12-09 15:00:19,701 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f78b5385d/daf6635409e34c658eb36fef0613ea96/FLAG983a23ce0 [2023-12-09 15:00:19,710 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f78b5385d/daf6635409e34c658eb36fef0613ea96 [2023-12-09 15:00:19,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:00:19,712 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:00:19,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:00:19,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:00:19,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:00:19,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:00:19" (1/1) ... [2023-12-09 15:00:19,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef3831b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:19, skipping insertion in model container [2023-12-09 15:00:19,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:00:19" (1/1) ... [2023-12-09 15:00:19,745 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:00:19,854 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] [2023-12-09 15:00:20,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:00:20,136 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:00:20,144 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] [2023-12-09 15:00:20,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:00:20,255 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:00:20,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20 WrapperNode [2023-12-09 15:00:20,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:00:20,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:00:20,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:00:20,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:00:20,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,299 INFO L138 Inliner]: procedures = 365, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-12-09 15:00:20,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:00:20,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:00:20,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:00:20,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:00:20,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:00:20,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:00:20,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:00:20,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:00:20,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (1/1) ... [2023-12-09 15:00:20,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:00:20,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:00:20,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 15:00:20,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:00:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:00:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:00:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 15:00:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:00:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:00:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 15:00:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:00:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-12-09 15:00:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-12-09 15:00:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:00:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:00:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:00:20,398 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:00:20,516 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:00:20,517 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:00:20,625 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:00:20,639 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:00:20,640 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 15:00:20,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:00:20 BoogieIcfgContainer [2023-12-09 15:00:20,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:00:20,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:00:20,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:00:20,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:00:20,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:00:19" (1/3) ... [2023-12-09 15:00:20,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edfc7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:00:20, skipping insertion in model container [2023-12-09 15:00:20,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:00:20" (2/3) ... [2023-12-09 15:00:20,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edfc7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:00:20, skipping insertion in model container [2023-12-09 15:00:20,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:00:20" (3/3) ... [2023-12-09 15:00:20,646 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-12-09 15:00:20,658 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:00:20,659 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:00:20,659 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:00:20,698 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-12-09 15:00:20,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 90 transitions, 187 flow [2023-12-09 15:00:20,751 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-12-09 15:00:20,752 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:00:20,756 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. [2023-12-09 15:00:20,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 90 transitions, 187 flow [2023-12-09 15:00:20,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 78 transitions, 162 flow [2023-12-09 15:00:20,765 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:00:20,770 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;@10570c4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:00:20,771 INFO L363 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-09 15:00:20,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:00:20,801 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-12-09 15:00:20,801 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:00:20,801 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:00:20,802 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:00:20,802 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:00:20,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:00:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1977027613, now seen corresponding path program 1 times [2023-12-09 15:00:20,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:00:20,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058470319] [2023-12-09 15:00:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:00:20,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:00:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:00:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:00:21,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:00:21,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058470319] [2023-12-09 15:00:21,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058470319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:00:21,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:00:21,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:00:21,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909901577] [2023-12-09 15:00:21,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:00:21,060 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:00:21,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:00:21,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:00:21,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:00:21,085 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2023-12-09 15:00:21,087 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) [2023-12-09 15:00:21,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:00:21,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2023-12-09 15:00:21,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:00:21,154 INFO L124 PetriNetUnfolderBase]: 26/142 cut-off events. [2023-12-09 15:00:21,155 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 15:00:21,156 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. [2023-12-09 15:00:21,157 INFO L140 encePairwiseOnDemand]: 83/90 looper letters, 18 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-12-09 15:00:21,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 204 flow [2023-12-09 15:00:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:00:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:00:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-12-09 15:00:21,172 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8555555555555555 [2023-12-09 15:00:21,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-12-09 15:00:21,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-12-09 15:00:21,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:00:21,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-12-09 15:00:21,178 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) [2023-12-09 15:00:21,183 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) [2023-12-09 15:00:21,184 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) [2023-12-09 15:00:21,187 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2023-12-09 15:00:21,187 INFO L500 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 204 flow [2023-12-09 15:00:21,187 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) [2023-12-09 15:00:21,187 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:00:21,187 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:00:21,187 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:00:21,188 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:00:21,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:00:21,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2007060445, now seen corresponding path program 1 times [2023-12-09 15:00:21,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:00:21,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678097943] [2023-12-09 15:00:21,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:00:21,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:00:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:00:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:00:21,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:00:21,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678097943] [2023-12-09 15:00:21,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678097943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:00:21,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:00:21,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:00:21,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413641357] [2023-12-09 15:00:21,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:00:21,264 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:00:21,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:00:21,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:00:21,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:00:21,265 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2023-12-09 15:00:21,266 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) [2023-12-09 15:00:21,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:00:21,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2023-12-09 15:00:21,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:00:21,366 INFO L124 PetriNetUnfolderBase]: 100/421 cut-off events. [2023-12-09 15:00:21,367 INFO L125 PetriNetUnfolderBase]: For 72/95 co-relation queries the response was YES. [2023-12-09 15:00:21,369 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. [2023-12-09 15:00:21,370 INFO L140 encePairwiseOnDemand]: 87/90 looper letters, 25 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-12-09 15:00:21,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 296 flow [2023-12-09 15:00:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:00:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:00:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-12-09 15:00:21,372 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2023-12-09 15:00:21,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-12-09 15:00:21,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-12-09 15:00:21,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:00:21,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-12-09 15:00:21,373 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) [2023-12-09 15:00:21,374 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) [2023-12-09 15:00:21,374 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) [2023-12-09 15:00:21,375 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-12-09 15:00:21,375 INFO L500 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 296 flow [2023-12-09 15:00:21,375 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) [2023-12-09 15:00:21,375 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:00:21,376 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:00:21,376 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:00:21,376 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:00:21,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:00:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash 997576006, now seen corresponding path program 1 times [2023-12-09 15:00:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:00:21,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118195049] [2023-12-09 15:00:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:00:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:00:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:00:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:00:21,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:00:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118195049] [2023-12-09 15:00:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118195049] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:00:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951838856] [2023-12-09 15:00:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:00:21,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:00:21,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:00:21,520 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) [2023-12-09 15:00:21,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:00:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:00:21,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:00:21,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:00:21,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:00:21,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:00:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:00:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951838856] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:00:21,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:00:21,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-09 15:00:21,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980059883] [2023-12-09 15:00:21,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:00:21,727 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:00:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:00:21,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:00:21,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:00:21,729 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2023-12-09 15:00:21,729 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) [2023-12-09 15:00:21,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:00:21,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2023-12-09 15:00:21,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:00:21,910 INFO L124 PetriNetUnfolderBase]: 144/569 cut-off events. [2023-12-09 15:00:21,911 INFO L125 PetriNetUnfolderBase]: For 307/395 co-relation queries the response was YES. [2023-12-09 15:00:21,916 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. [2023-12-09 15:00:21,919 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 53 selfloop transitions, 9 changer transitions 0/124 dead transitions. [2023-12-09 15:00:21,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 608 flow [2023-12-09 15:00:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:00:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:00:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 663 transitions. [2023-12-09 15:00:21,924 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8185185185185185 [2023-12-09 15:00:21,924 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 663 transitions. [2023-12-09 15:00:21,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 663 transitions. [2023-12-09 15:00:21,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:00:21,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 663 transitions. [2023-12-09 15:00:21,927 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) [2023-12-09 15:00:21,930 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) [2023-12-09 15:00:21,930 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) [2023-12-09 15:00:21,931 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2023-12-09 15:00:21,931 INFO L500 AbstractCegarLoop]: Abstraction has has 86 places, 124 transitions, 608 flow [2023-12-09 15:00:21,932 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) [2023-12-09 15:00:21,932 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:00:21,932 INFO L233 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] [2023-12-09 15:00:21,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:00:22,137 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 [2023-12-09 15:00:22,138 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:00:22,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:00:22,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2131734334, now seen corresponding path program 2 times [2023-12-09 15:00:22,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:00:22,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500223826] [2023-12-09 15:00:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:00:22,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:00:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:00:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:00:22,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:00:22,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500223826] [2023-12-09 15:00:22,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500223826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:00:22,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:00:22,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:00:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534281229] [2023-12-09 15:00:22,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:00:22,328 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:00:22,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:00:22,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:00:22,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:00:22,331 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2023-12-09 15:00:22,331 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) [2023-12-09 15:00:22,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:00:22,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2023-12-09 15:00:22,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:00:22,392 INFO L124 PetriNetUnfolderBase]: 126/540 cut-off events. [2023-12-09 15:00:22,393 INFO L125 PetriNetUnfolderBase]: For 673/725 co-relation queries the response was YES. [2023-12-09 15:00:22,394 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. [2023-12-09 15:00:22,395 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 8 selfloop transitions, 44 changer transitions 0/124 dead transitions. [2023-12-09 15:00:22,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 124 transitions, 712 flow [2023-12-09 15:00:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:00:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:00:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-12-09 15:00:22,397 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8296296296296296 [2023-12-09 15:00:22,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-12-09 15:00:22,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-12-09 15:00:22,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:00:22,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-12-09 15:00:22,398 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) [2023-12-09 15:00:22,398 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) [2023-12-09 15:00:22,399 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) [2023-12-09 15:00:22,400 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2023-12-09 15:00:22,400 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 124 transitions, 712 flow [2023-12-09 15:00:22,401 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) [2023-12-09 15:00:22,401 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:00:22,401 INFO L233 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] [2023-12-09 15:00:22,401 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:00:22,401 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:00:22,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:00:22,401 INFO L85 PathProgramCache]: Analyzing trace with hash -456214806, now seen corresponding path program 3 times [2023-12-09 15:00:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:00:22,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747321645] [2023-12-09 15:00:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:00:22,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:00:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:00:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-09 15:00:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:00:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747321645] [2023-12-09 15:00:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747321645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:00:22,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385341972] [2023-12-09 15:00:22,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:00:22,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:00:22,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:00:22,533 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) [2023-12-09 15:00:22,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:00:22,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-09 15:00:22,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:00:22,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:00:22,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:00:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:00:22,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:00:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:00:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385341972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:00:22,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:00:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-12-09 15:00:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171727393] [2023-12-09 15:00:22,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:00:22,898 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:00:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:00:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:00:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:00:22,900 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 90 [2023-12-09 15:00:22,901 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) [2023-12-09 15:00:22,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:00:22,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 90 [2023-12-09 15:00:22,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:00:24,493 INFO L124 PetriNetUnfolderBase]: 812/2462 cut-off events. [2023-12-09 15:00:24,494 INFO L125 PetriNetUnfolderBase]: For 3154/3174 co-relation queries the response was YES. [2023-12-09 15:00:24,498 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. [2023-12-09 15:00:24,509 INFO L140 encePairwiseOnDemand]: 79/90 looper letters, 433 selfloop transitions, 205 changer transitions 0/689 dead transitions. [2023-12-09 15:00:24,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 689 transitions, 5414 flow [2023-12-09 15:00:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-09 15:00:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2023-12-09 15:00:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 6714 transitions. [2023-12-09 15:00:24,529 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7386138613861386 [2023-12-09 15:00:24,529 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 6714 transitions. [2023-12-09 15:00:24,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 6714 transitions. [2023-12-09 15:00:24,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:00:24,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 6714 transitions. [2023-12-09 15:00:24,546 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) [2023-12-09 15:00:24,563 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) [2023-12-09 15:00:24,565 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) [2023-12-09 15:00:24,567 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 112 predicate places. [2023-12-09 15:00:24,567 INFO L500 AbstractCegarLoop]: Abstraction has has 188 places, 689 transitions, 5414 flow [2023-12-09 15:00:24,567 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) [2023-12-09 15:00:24,569 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:00:24,569 INFO L233 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] [2023-12-09 15:00:24,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:00:24,774 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 [2023-12-09 15:00:24,774 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:00:24,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:00:24,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1373272486, now seen corresponding path program 4 times [2023-12-09 15:00:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:00:24,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999302984] [2023-12-09 15:00:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:00:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:00:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:00:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-09 15:00:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:00:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999302984] [2023-12-09 15:00:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999302984] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:00:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62882946] [2023-12-09 15:00:24,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:00:24,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:00:24,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:00:24,918 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) [2023-12-09 15:00:24,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:00:25,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:00:25,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:00:25,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-09 15:00:25,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:00:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-09 15:00:25,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:00:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-09 15:00:25,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62882946] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:00:25,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:00:25,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-12-09 15:00:25,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199325681] [2023-12-09 15:00:25,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:00:25,290 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:00:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:00:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:00:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:00:25,292 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2023-12-09 15:00:25,292 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) [2023-12-09 15:00:25,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:00:25,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2023-12-09 15:00:25,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:00:25,915 INFO L124 PetriNetUnfolderBase]: 1414/4222 cut-off events. [2023-12-09 15:00:25,916 INFO L125 PetriNetUnfolderBase]: For 8947/9023 co-relation queries the response was YES. [2023-12-09 15:00:25,921 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. [2023-12-09 15:00:25,940 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 600 selfloop transitions, 300 changer transitions 0/1111 dead transitions. [2023-12-09 15:00:25,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1111 transitions, 10958 flow [2023-12-09 15:00:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:00:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:00:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1073 transitions. [2023-12-09 15:00:25,942 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7948148148148149 [2023-12-09 15:00:25,942 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1073 transitions. [2023-12-09 15:00:25,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1073 transitions. [2023-12-09 15:00:25,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:00:25,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1073 transitions. [2023-12-09 15:00:25,947 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) [2023-12-09 15:00:25,950 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) [2023-12-09 15:00:25,950 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) [2023-12-09 15:00:25,954 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 126 predicate places. [2023-12-09 15:00:25,954 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 1111 transitions, 10958 flow [2023-12-09 15:00:25,954 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) [2023-12-09 15:00:25,954 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:00:25,954 INFO L233 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] [2023-12-09 15:00:25,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:00:26,159 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 [2023-12-09 15:00:26,160 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:00:26,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:00:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1808596898, now seen corresponding path program 5 times [2023-12-09 15:00:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:00:26,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512743751] [2023-12-09 15:00:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:00:26,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:00:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:00:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 13 proven. 95 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-09 15:00:26,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:00:26,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512743751] [2023-12-09 15:00:26,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512743751] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:00:26,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517677104] [2023-12-09 15:00:26,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:00:26,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:00:26,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:00:26,425 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) [2023-12-09 15:00:26,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:00:26,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-09 15:00:26,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:00:26,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:00:26,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:00:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 9 proven. 259 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-09 15:00:26,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:00:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 9 proven. 259 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-09 15:00:27,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517677104] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:00:27,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:00:27,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 43 [2023-12-09 15:00:27,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926827889] [2023-12-09 15:00:27,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:00:27,163 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-09 15:00:27,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:00:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-09 15:00:27,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1487, Unknown=0, NotChecked=0, Total=1806 [2023-12-09 15:00:27,169 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 90 [2023-12-09 15:00:27,171 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) [2023-12-09 15:00:27,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:00:27,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 90 [2023-12-09 15:00:27,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:00:57,776 INFO L124 PetriNetUnfolderBase]: 3728/11089 cut-off events. [2023-12-09 15:00:57,777 INFO L125 PetriNetUnfolderBase]: For 30022/30270 co-relation queries the response was YES. [2023-12-09 15:00:57,791 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. [2023-12-09 15:00:57,845 INFO L140 encePairwiseOnDemand]: 79/90 looper letters, 2305 selfloop transitions, 1649 changer transitions 0/4005 dead transitions. [2023-12-09 15:00:57,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 4005 transitions, 46662 flow [2023-12-09 15:00:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 749 states. [2023-12-09 15:00:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2023-12-09 15:00:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 48614 transitions. [2023-12-09 15:00:57,886 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7211689660287791 [2023-12-09 15:00:57,887 INFO L72 ComplementDD]: Start complementDD. Operand 749 states and 48614 transitions. [2023-12-09 15:00:57,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 749 states and 48614 transitions. [2023-12-09 15:00:57,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:00:57,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 749 states and 48614 transitions. [2023-12-09 15:00:57,962 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) [2023-12-09 15:00:58,040 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) [2023-12-09 15:00:58,066 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) [2023-12-09 15:00:58,066 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 874 predicate places. [2023-12-09 15:00:58,066 INFO L500 AbstractCegarLoop]: Abstraction has has 950 places, 4005 transitions, 46662 flow [2023-12-09 15:00:58,067 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) [2023-12-09 15:00:58,067 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:00:58,067 INFO L233 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] [2023-12-09 15:00:58,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-09 15:00:58,273 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 [2023-12-09 15:00:58,274 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:00:58,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:00:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2130969948, now seen corresponding path program 6 times [2023-12-09 15:00:58,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:00:58,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879545017] [2023-12-09 15:00:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:00:58,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:00:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:00:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 29 proven. 141 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-12-09 15:00:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:00:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879545017] [2023-12-09 15:00:58,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879545017] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:00:58,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66549387] [2023-12-09 15:00:58,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:00:58,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:00:58,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:00:58,758 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) [2023-12-09 15:00:58,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:00:59,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-09 15:00:59,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:00:59,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:00:59,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:00:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 29 proven. 141 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-12-09 15:00:59,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:00:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 29 proven. 141 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-12-09 15:00:59,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66549387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:00:59,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:00:59,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2023-12-09 15:00:59,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822210319] [2023-12-09 15:00:59,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:00:59,513 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-09 15:00:59,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:00:59,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-09 15:00:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:00:59,515 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2023-12-09 15:00:59,516 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) [2023-12-09 15:00:59,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:00:59,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2023-12-09 15:00:59,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:01:07,789 INFO L124 PetriNetUnfolderBase]: 7030/21029 cut-off events. [2023-12-09 15:01:07,789 INFO L125 PetriNetUnfolderBase]: For 83867/84404 co-relation queries the response was YES. [2023-12-09 15:01:07,829 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. [2023-12-09 15:01:07,925 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 3672 selfloop transitions, 2028 changer transitions 0/6839 dead transitions. [2023-12-09 15:01:07,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 988 places, 6839 transitions, 94566 flow [2023-12-09 15:01:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-09 15:01:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-12-09 15:01:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2781 transitions. [2023-12-09 15:01:07,928 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7923076923076923 [2023-12-09 15:01:07,928 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2781 transitions. [2023-12-09 15:01:07,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2781 transitions. [2023-12-09 15:01:07,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:01:07,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2781 transitions. [2023-12-09 15:01:07,931 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) [2023-12-09 15:01:07,934 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) [2023-12-09 15:01:07,934 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) [2023-12-09 15:01:07,935 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 912 predicate places. [2023-12-09 15:01:07,935 INFO L500 AbstractCegarLoop]: Abstraction has has 988 places, 6839 transitions, 94566 flow [2023-12-09 15:01:07,935 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) [2023-12-09 15:01:07,935 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:01:07,936 INFO L233 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] [2023-12-09 15:01:07,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:01:08,148 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 [2023-12-09 15:01:08,148 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:01:08,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:01:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1156150684, now seen corresponding path program 7 times [2023-12-09 15:01:08,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:01:08,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75270748] [2023-12-09 15:01:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:01:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:01:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:01:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 29 proven. 715 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-12-09 15:01:08,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:01:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75270748] [2023-12-09 15:01:08,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75270748] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:01:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727507584] [2023-12-09 15:01:08,971 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:01:08,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:01:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:01:08,989 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) [2023-12-09 15:01:09,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:01:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:01:09,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-09 15:01:09,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:01:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 29 proven. 715 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-12-09 15:01:09,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:01:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 29 proven. 715 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-12-09 15:01:10,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727507584] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:01:10,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:01:10,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 43 [2023-12-09 15:01:10,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581966656] [2023-12-09 15:01:10,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:01:10,056 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-09 15:01:10,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:01:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-09 15:01:10,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2023-12-09 15:01:10,058 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2023-12-09 15:01:10,059 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) [2023-12-09 15:01:10,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:01:10,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2023-12-09 15:01:10,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:01:32,061 INFO L124 PetriNetUnfolderBase]: 10663/31859 cut-off events. [2023-12-09 15:01:32,061 INFO L125 PetriNetUnfolderBase]: For 180779/181859 co-relation queries the response was YES. [2023-12-09 15:01:32,113 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. [2023-12-09 15:01:32,258 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 5660 selfloop transitions, 3120 changer transitions 0/9919 dead transitions. [2023-12-09 15:01:32,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1047 places, 9919 transitions, 158102 flow [2023-12-09 15:01:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-09 15:01:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-12-09 15:01:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4272 transitions. [2023-12-09 15:01:32,261 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2023-12-09 15:01:32,261 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4272 transitions. [2023-12-09 15:01:32,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4272 transitions. [2023-12-09 15:01:32,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:01:32,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4272 transitions. [2023-12-09 15:01:32,270 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) [2023-12-09 15:01:32,274 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) [2023-12-09 15:01:32,274 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) [2023-12-09 15:01:32,275 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 971 predicate places. [2023-12-09 15:01:32,275 INFO L500 AbstractCegarLoop]: Abstraction has has 1047 places, 9919 transitions, 158102 flow [2023-12-09 15:01:32,276 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) [2023-12-09 15:01:32,276 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:01:32,276 INFO L233 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] [2023-12-09 15:01:32,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-09 15:01:32,481 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 [2023-12-09 15:01:32,482 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:01:32,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:01:32,482 INFO L85 PathProgramCache]: Analyzing trace with hash -301108780, now seen corresponding path program 8 times [2023-12-09 15:01:32,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:01:32,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930811156] [2023-12-09 15:01:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:01:32,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:01:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:01:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 39 proven. 1275 refuted. 0 times theorem prover too weak. 1691 trivial. 0 not checked. [2023-12-09 15:01:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:01:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930811156] [2023-12-09 15:01:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930811156] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:01:33,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021228524] [2023-12-09 15:01:33,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:01:33,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:01:33,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:01:33,707 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) [2023-12-09 15:01:33,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:01:33,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:01:33,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:01:33,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-09 15:01:33,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:01:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 39 proven. 1275 refuted. 0 times theorem prover too weak. 1691 trivial. 0 not checked. [2023-12-09 15:01:34,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:01:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 39 proven. 1275 refuted. 0 times theorem prover too weak. 1691 trivial. 0 not checked. [2023-12-09 15:01:34,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021228524] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:01:34,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:01:34,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 43 [2023-12-09 15:01:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843301387] [2023-12-09 15:01:34,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:01:34,649 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-09 15:01:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:01:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-09 15:01:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2023-12-09 15:01:34,651 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2023-12-09 15:01:34,653 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) [2023-12-09 15:01:34,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:01:34,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2023-12-09 15:01:34,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:02:42,161 INFO L124 PetriNetUnfolderBase]: 14053/42667 cut-off events. [2023-12-09 15:02:42,161 INFO L125 PetriNetUnfolderBase]: For 278404/279814 co-relation queries the response was YES. [2023-12-09 15:02:42,247 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. [2023-12-09 15:02:42,512 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 6410 selfloop transitions, 1020 changer transitions 0/11799 dead transitions. [2023-12-09 15:02:42,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1106 places, 11799 transitions, 206992 flow [2023-12-09 15:02:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-09 15:02:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-12-09 15:02:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4389 transitions. [2023-12-09 15:02:42,515 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8127777777777778 [2023-12-09 15:02:42,515 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4389 transitions. [2023-12-09 15:02:42,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4389 transitions. [2023-12-09 15:02:42,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:02:42,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4389 transitions. [2023-12-09 15:02:42,520 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) [2023-12-09 15:02:42,523 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) [2023-12-09 15:02:42,524 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) [2023-12-09 15:02:42,525 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1030 predicate places. [2023-12-09 15:02:42,525 INFO L500 AbstractCegarLoop]: Abstraction has has 1106 places, 11799 transitions, 206992 flow [2023-12-09 15:02:42,525 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) [2023-12-09 15:02:42,525 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:42,525 INFO L233 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] [2023-12-09 15:02:42,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:02:42,732 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 [2023-12-09 15:02:42,732 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:02:42,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:42,733 INFO L85 PathProgramCache]: Analyzing trace with hash 429498681, now seen corresponding path program 9 times [2023-12-09 15:02:42,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:42,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827588279] [2023-12-09 15:02:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:42,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:02:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:02:46,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:02:46,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827588279] [2023-12-09 15:02:46,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827588279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:02:46,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507348906] [2023-12-09 15:02:46,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:02:46,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:02:46,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:02:46,293 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) [2023-12-09 15:02:46,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:02:46,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-12-09 15:02:46,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:02:46,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 168 conjunts are in the unsatisfiable core [2023-12-09 15:02:46,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:02:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:02:47,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:02:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:02:47,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507348906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:02:47,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:02:47,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 68 [2023-12-09 15:02:47,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841497151] [2023-12-09 15:02:47,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:02:47,766 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-09 15:02:47,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:02:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-09 15:02:47,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4421, Unknown=0, NotChecked=0, Total=4556 [2023-12-09 15:02:47,770 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2023-12-09 15:02:47,772 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) [2023-12-09 15:02:47,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:02:47,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2023-12-09 15:02:47,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:04:45,773 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:04:45,773 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:04:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-09 15:04:45,918 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-09 15:04:45,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-09 15:04:46,127 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 [2023-12-09 15:04:46,127 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (68states, 62/90 universal loopers) in iteration 11,while PetriNetUnfolder was constructing finite prefix that currently has 252237 conditions, 42411 events (14557/42410 cut-off events. For 316421/318296 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 421849 event pairs, 169 based on Foata normal form. 417/42401 useless extension candidates. Maximal degree in co-relation 252164. Up to 15947 conditions per place.). [2023-12-09 15:04:46,130 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-12-09 15:04:46,130 INFO L457 BasicCegarLoop]: Path program histogram: [9, 1, 1] [2023-12-09 15:04:46,143 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:04:46,144 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:04:46,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:04:46 BasicIcfg [2023-12-09 15:04:46,152 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:04:46,152 INFO L158 Benchmark]: Toolchain (without parser) took 266439.68ms. Allocated memory was 178.3MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 119.2MB in the beginning and 779.4MB in the end (delta: -660.2MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-09 15:04:46,152 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:04:46,152 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.75ms. Allocated memory was 178.3MB in the beginning and 263.2MB in the end (delta: 84.9MB). Free memory was 118.9MB in the beginning and 227.5MB in the end (delta: -108.6MB). Peak memory consumption was 44.8MB. Max. memory is 8.0GB. [2023-12-09 15:04:46,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.31ms. Allocated memory is still 263.2MB. Free memory was 227.4MB in the beginning and 225.0MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-09 15:04:46,153 INFO L158 Benchmark]: Boogie Preprocessor took 36.28ms. Allocated memory is still 263.2MB. Free memory was 225.0MB in the beginning and 223.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:04:46,153 INFO L158 Benchmark]: RCFGBuilder took 303.94ms. Allocated memory is still 263.2MB. Free memory was 223.4MB in the beginning and 215.3MB in the end (delta: 8.1MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2023-12-09 15:04:46,154 INFO L158 Benchmark]: TraceAbstraction took 265508.99ms. Allocated memory was 263.2MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 214.8MB in the beginning and 779.4MB in the end (delta: -564.6MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-09 15:04:46,154 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 542.75ms. Allocated memory was 178.3MB in the beginning and 263.2MB in the end (delta: 84.9MB). Free memory was 118.9MB in the beginning and 227.5MB in the end (delta: -108.6MB). Peak memory consumption was 44.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.31ms. Allocated memory is still 263.2MB. Free memory was 227.4MB in the beginning and 225.0MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.28ms. Allocated memory is still 263.2MB. Free memory was 225.0MB in the beginning and 223.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 303.94ms. Allocated memory is still 263.2MB. Free memory was 223.4MB in the beginning and 215.3MB in the end (delta: 8.1MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. * TraceAbstraction took 265508.99ms. Allocated memory was 263.2MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 214.8MB in the beginning and 779.4MB in the end (delta: -564.6MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * 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 (68states, 62/90 universal loopers) in iteration 11,while PetriNetUnfolder was constructing finite prefix that currently has 252237 conditions, 42411 events (14557/42410 cut-off events. For 316421/318296 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 421849 event pairs, 169 based on Foata normal form. 417/42401 useless extension candidates. Maximal degree in co-relation 252164. Up to 15947 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 (68states, 62/90 universal loopers) in iteration 11,while PetriNetUnfolder was constructing finite prefix that currently has 252237 conditions, 42411 events (14557/42410 cut-off events. For 316421/318296 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 421849 event pairs, 169 based on Foata normal form. 417/42401 useless extension candidates. Maximal degree in co-relation 252164. Up to 15947 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: 265.4s, OverallIterations: 11, TraceHistogramMax: 20, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 250.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11866 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11866 mSDsluCounter, 3072 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2915 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30576 IncrementalHoareTripleChecker+Invalid, 30596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 157 mSDtfsCounter, 30576 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5957 GetRequests, 4668 SyntacticMatches, 38 SemanticMatches, 1251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306012 ImplicationChecksByTransitivity, 32.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206992occurred in iteration=10, InterpolantAutomatonStates: 1042, 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, 1.1s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 4182 NumberOfCodeBlocks, 4137 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 6147 ConstructedInterpolants, 0 QuantifiedInterpolants, 14787 SizeOfPredicates, 136 NumberOfNonLiveVariables, 4816 ConjunctsInSsa, 276 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 14151/33362 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