/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 21:37:03,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 21:37:03,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 21:37:03,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 21:37:03,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 21:37:03,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 21:37:03,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 21:37:03,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 21:37:03,239 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 21:37:03,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 21:37:03,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 21:37:03,243 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 21:37:03,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 21:37:03,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 21:37:03,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 21:37:03,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 21:37:03,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 21:37:03,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 21:37:03,245 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 21:37:03,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 21:37:03,245 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 21:37:03,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 21:37:03,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 21:37:03,246 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 21:37:03,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 21:37:03,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:37:03,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 21:37:03,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 21:37:03,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 21:37:03,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 21:37:03,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 21:37:03,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 21:37:03,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 21:37:03,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 21:37:03,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 21:37:03,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 21:37:03,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 21:37:03,476 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 21:37:03,476 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 21:37:03,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-11-29 21:37:04,539 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 21:37:04,726 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 21:37:04,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-11-29 21:37:04,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2301b5b16/c900298efc824cd49fd89dbe80993130/FLAG9774c7a9c [2023-11-29 21:37:04,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2301b5b16/c900298efc824cd49fd89dbe80993130 [2023-11-29 21:37:04,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 21:37:04,758 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 21:37:04,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 21:37:04,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 21:37:04,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 21:37:04,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:37:04" (1/1) ... [2023-11-29 21:37:04,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9e0967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:04, skipping insertion in model container [2023-11-29 21:37:04,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:37:04" (1/1) ... [2023-11-29 21:37:04,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 21:37:04,968 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2436,2449] [2023-11-29 21:37:04,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:37:04,979 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 21:37:05,014 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2436,2449] [2023-11-29 21:37:05,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:37:05,020 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 21:37:05,020 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 21:37:05,027 INFO L206 MainTranslator]: Completed translation [2023-11-29 21:37:05,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05 WrapperNode [2023-11-29 21:37:05,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 21:37:05,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 21:37:05,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 21:37:05,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 21:37:05,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,070 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2023-11-29 21:37:05,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 21:37:05,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 21:37:05,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 21:37:05,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 21:37:05,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 21:37:05,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 21:37:05,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 21:37:05,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 21:37:05,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (1/1) ... [2023-11-29 21:37:05,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:37:05,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:37:05,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 21:37:05,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 21:37:05,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 21:37:05,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 21:37:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 21:37:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 21:37:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 21:37:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 21:37:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 21:37:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 21:37:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 21:37:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 21:37:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 21:37:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 21:37:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 21:37:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 21:37:05,166 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 21:37:05,270 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 21:37:05,272 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 21:37:05,415 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 21:37:05,438 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 21:37:05,439 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 21:37:05,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:37:05 BoogieIcfgContainer [2023-11-29 21:37:05,440 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 21:37:05,442 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 21:37:05,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 21:37:05,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 21:37:05,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:37:04" (1/3) ... [2023-11-29 21:37:05,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f20103d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:37:05, skipping insertion in model container [2023-11-29 21:37:05,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:05" (2/3) ... [2023-11-29 21:37:05,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f20103d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:37:05, skipping insertion in model container [2023-11-29 21:37:05,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:37:05" (3/3) ... [2023-11-29 21:37:05,451 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-11-29 21:37:05,466 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 21:37:05,466 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 21:37:05,466 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 21:37:05,559 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 21:37:05,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 95 transitions, 204 flow [2023-11-29 21:37:05,641 INFO L124 PetriNetUnfolderBase]: 11/93 cut-off events. [2023-11-29 21:37:05,641 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 21:37:05,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 11/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 105 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-11-29 21:37:05,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 95 transitions, 204 flow [2023-11-29 21:37:05,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2023-11-29 21:37:05,658 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 21:37:05,663 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;@38c9f25f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 21:37:05,663 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 21:37:05,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 21:37:05,683 INFO L124 PetriNetUnfolderBase]: 11/83 cut-off events. [2023-11-29 21:37:05,683 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 21:37:05,683 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:05,683 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:37:05,684 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:37:05,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1011002996, now seen corresponding path program 1 times [2023-11-29 21:37:05,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:05,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800431011] [2023-11-29 21:37:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:05,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:37:06,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800431011] [2023-11-29 21:37:06,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800431011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:37:06,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:37:06,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 21:37:06,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931726080] [2023-11-29 21:37:06,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:37:06,115 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 21:37:06,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 21:37:06,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 21:37:06,152 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2023-11-29 21:37:06,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:06,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2023-11-29 21:37:06,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:06,250 INFO L124 PetriNetUnfolderBase]: 24/133 cut-off events. [2023-11-29 21:37:06,250 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 21:37:06,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 133 events. 24/133 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 310 event pairs, 2 based on Foata normal form. 9/121 useless extension candidates. Maximal degree in co-relation 137. Up to 20 conditions per place. [2023-11-29 21:37:06,253 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 14 selfloop transitions, 2 changer transitions 1/86 dead transitions. [2023-11-29 21:37:06,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 219 flow [2023-11-29 21:37:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 21:37:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 21:37:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-11-29 21:37:06,270 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9192982456140351 [2023-11-29 21:37:06,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-11-29 21:37:06,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-11-29 21:37:06,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:06,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-11-29 21:37:06,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,289 INFO L307 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2023-11-29 21:37:06,290 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 219 flow [2023-11-29 21:37:06,290 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,291 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:06,291 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:37:06,291 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 21:37:06,292 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:37:06,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash -396162660, now seen corresponding path program 1 times [2023-11-29 21:37:06,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:06,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578763886] [2023-11-29 21:37:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:06,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:37:06,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:06,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578763886] [2023-11-29 21:37:06,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578763886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:37:06,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:37:06,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 21:37:06,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629419301] [2023-11-29 21:37:06,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:37:06,516 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 21:37:06,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 21:37:06,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 21:37:06,518 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2023-11-29 21:37:06,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:06,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2023-11-29 21:37:06,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:06,604 INFO L124 PetriNetUnfolderBase]: 68/263 cut-off events. [2023-11-29 21:37:06,604 INFO L125 PetriNetUnfolderBase]: For 82/115 co-relation queries the response was YES. [2023-11-29 21:37:06,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 263 events. 68/263 cut-off events. For 82/115 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 912 event pairs, 5 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 295. Up to 34 conditions per place. [2023-11-29 21:37:06,610 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 19 selfloop transitions, 2 changer transitions 1/93 dead transitions. [2023-11-29 21:37:06,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 93 transitions, 288 flow [2023-11-29 21:37:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 21:37:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 21:37:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-11-29 21:37:06,613 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9017543859649123 [2023-11-29 21:37:06,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-11-29 21:37:06,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-11-29 21:37:06,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:06,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-11-29 21:37:06,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,618 INFO L307 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2023-11-29 21:37:06,618 INFO L500 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 288 flow [2023-11-29 21:37:06,618 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,619 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:06,619 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:37:06,619 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 21:37:06,619 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:37:06,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:06,621 INFO L85 PathProgramCache]: Analyzing trace with hash 331843457, now seen corresponding path program 1 times [2023-11-29 21:37:06,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:06,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48689008] [2023-11-29 21:37:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:06,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:37:06,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:06,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48689008] [2023-11-29 21:37:06,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48689008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:37:06,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:37:06,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 21:37:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859642985] [2023-11-29 21:37:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:37:06,795 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 21:37:06,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 21:37:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 21:37:06,796 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2023-11-29 21:37:06,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:06,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2023-11-29 21:37:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:06,876 INFO L124 PetriNetUnfolderBase]: 123/331 cut-off events. [2023-11-29 21:37:06,877 INFO L125 PetriNetUnfolderBase]: For 608/737 co-relation queries the response was YES. [2023-11-29 21:37:06,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 331 events. 123/331 cut-off events. For 608/737 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1491 event pairs, 8 based on Foata normal form. 18/285 useless extension candidates. Maximal degree in co-relation 589. Up to 112 conditions per place. [2023-11-29 21:37:06,881 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 26 selfloop transitions, 2 changer transitions 1/100 dead transitions. [2023-11-29 21:37:06,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 381 flow [2023-11-29 21:37:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 21:37:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 21:37:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-11-29 21:37:06,883 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.887719298245614 [2023-11-29 21:37:06,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-11-29 21:37:06,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-11-29 21:37:06,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:06,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-11-29 21:37:06,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,887 INFO L307 CegarLoopForPetriNet]: 80 programPoint places, 6 predicate places. [2023-11-29 21:37:06,887 INFO L500 AbstractCegarLoop]: Abstraction has has 86 places, 100 transitions, 381 flow [2023-11-29 21:37:06,888 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:06,888 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:06,888 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:37:06,888 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 21:37:06,888 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:37:06,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash -852042391, now seen corresponding path program 1 times [2023-11-29 21:37:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:06,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981320607] [2023-11-29 21:37:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:37:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981320607] [2023-11-29 21:37:07,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981320607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:37:07,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:37:07,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 21:37:07,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824650998] [2023-11-29 21:37:07,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:37:07,066 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 21:37:07,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:07,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 21:37:07,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 21:37:07,069 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2023-11-29 21:37:07,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:07,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2023-11-29 21:37:07,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:07,166 INFO L124 PetriNetUnfolderBase]: 168/497 cut-off events. [2023-11-29 21:37:07,167 INFO L125 PetriNetUnfolderBase]: For 1956/2621 co-relation queries the response was YES. [2023-11-29 21:37:07,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 497 events. 168/497 cut-off events. For 1956/2621 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2967 event pairs, 22 based on Foata normal form. 73/489 useless extension candidates. Maximal degree in co-relation 950. Up to 159 conditions per place. [2023-11-29 21:37:07,173 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 29 selfloop transitions, 4 changer transitions 1/107 dead transitions. [2023-11-29 21:37:07,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 107 transitions, 515 flow [2023-11-29 21:37:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 21:37:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 21:37:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-11-29 21:37:07,175 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8763157894736842 [2023-11-29 21:37:07,175 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-11-29 21:37:07,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-11-29 21:37:07,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:07,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-11-29 21:37:07,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,179 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,181 INFO L307 CegarLoopForPetriNet]: 80 programPoint places, 9 predicate places. [2023-11-29 21:37:07,181 INFO L500 AbstractCegarLoop]: Abstraction has has 89 places, 107 transitions, 515 flow [2023-11-29 21:37:07,182 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,182 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:07,182 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:37:07,182 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 21:37:07,183 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:37:07,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:07,183 INFO L85 PathProgramCache]: Analyzing trace with hash -520818637, now seen corresponding path program 1 times [2023-11-29 21:37:07,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:07,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419597550] [2023-11-29 21:37:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:37:07,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:07,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419597550] [2023-11-29 21:37:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419597550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:37:07,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:37:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 21:37:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59440384] [2023-11-29 21:37:07,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:37:07,365 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 21:37:07,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 21:37:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 21:37:07,367 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2023-11-29 21:37:07,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 107 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:07,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2023-11-29 21:37:07,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:07,517 INFO L124 PetriNetUnfolderBase]: 176/600 cut-off events. [2023-11-29 21:37:07,518 INFO L125 PetriNetUnfolderBase]: For 3808/4734 co-relation queries the response was YES. [2023-11-29 21:37:07,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 600 events. 176/600 cut-off events. For 3808/4734 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3983 event pairs, 17 based on Foata normal form. 54/595 useless extension candidates. Maximal degree in co-relation 1454. Up to 211 conditions per place. [2023-11-29 21:37:07,524 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 44 selfloop transitions, 5 changer transitions 1/122 dead transitions. [2023-11-29 21:37:07,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 122 transitions, 775 flow [2023-11-29 21:37:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 21:37:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 21:37:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2023-11-29 21:37:07,525 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8789473684210526 [2023-11-29 21:37:07,525 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2023-11-29 21:37:07,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2023-11-29 21:37:07,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:07,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2023-11-29 21:37:07,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,528 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,530 INFO L307 CegarLoopForPetriNet]: 80 programPoint places, 12 predicate places. [2023-11-29 21:37:07,530 INFO L500 AbstractCegarLoop]: Abstraction has has 92 places, 122 transitions, 775 flow [2023-11-29 21:37:07,531 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:07,531 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:07,531 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:37:07,531 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 21:37:07,531 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:37:07,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash 621335622, now seen corresponding path program 1 times [2023-11-29 21:37:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:07,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349847052] [2023-11-29 21:37:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:37:07,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349847052] [2023-11-29 21:37:07,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349847052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:37:07,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578866405] [2023-11-29 21:37:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:07,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:37:07,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:37:07,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:37:07,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 21:37:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:07,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 21:37:07,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:37:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:37:07,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:37:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:37:08,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578866405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:37:08,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:37:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2023-11-29 21:37:08,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375928123] [2023-11-29 21:37:08,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:37:08,089 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 21:37:08,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 21:37:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 21:37:08,091 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 95 [2023-11-29 21:37:08,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 122 transitions, 775 flow. Second operand has 7 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:08,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:08,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 95 [2023-11-29 21:37:08,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:08,360 INFO L124 PetriNetUnfolderBase]: 374/1136 cut-off events. [2023-11-29 21:37:08,361 INFO L125 PetriNetUnfolderBase]: For 13624/15827 co-relation queries the response was YES. [2023-11-29 21:37:08,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4070 conditions, 1136 events. 374/1136 cut-off events. For 13624/15827 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8368 event pairs, 34 based on Foata normal form. 86/1076 useless extension candidates. Maximal degree in co-relation 3555. Up to 446 conditions per place. [2023-11-29 21:37:08,370 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 80 selfloop transitions, 34 changer transitions 8/195 dead transitions. [2023-11-29 21:37:08,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 195 transitions, 1751 flow [2023-11-29 21:37:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 21:37:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 21:37:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2023-11-29 21:37:08,372 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.84 [2023-11-29 21:37:08,372 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2023-11-29 21:37:08,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2023-11-29 21:37:08,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:08,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2023-11-29 21:37:08,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:08,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 95.0) internal successors, (1045), 11 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:08,376 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 95.0) internal successors, (1045), 11 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:08,376 INFO L307 CegarLoopForPetriNet]: 80 programPoint places, 21 predicate places. [2023-11-29 21:37:08,376 INFO L500 AbstractCegarLoop]: Abstraction has has 101 places, 195 transitions, 1751 flow [2023-11-29 21:37:08,377 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:08,377 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:08,377 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:37:08,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 21:37:08,588 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 21:37:08,588 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:37:08,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash -797661102, now seen corresponding path program 2 times [2023-11-29 21:37:08,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:08,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997663184] [2023-11-29 21:37:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:08,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:37:08,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:08,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997663184] [2023-11-29 21:37:08,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997663184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:37:08,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706078376] [2023-11-29 21:37:08,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:37:08,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:37:08,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:37:08,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:37:08,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 21:37:08,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:37:08,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:37:08,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 21:37:08,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:37:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:37:08,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:37:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:37:09,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706078376] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:37:09,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:37:09,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2023-11-29 21:37:09,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936258447] [2023-11-29 21:37:09,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:37:09,010 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 21:37:09,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:09,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 21:37:09,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 21:37:09,011 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 95 [2023-11-29 21:37:09,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 195 transitions, 1751 flow. Second operand has 8 states, 8 states have (on average 76.875) internal successors, (615), 8 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:09,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 95 [2023-11-29 21:37:09,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:09,263 INFO L124 PetriNetUnfolderBase]: 377/1193 cut-off events. [2023-11-29 21:37:09,263 INFO L125 PetriNetUnfolderBase]: For 17963/19991 co-relation queries the response was YES. [2023-11-29 21:37:09,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4604 conditions, 1193 events. 377/1193 cut-off events. For 17963/19991 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8880 event pairs, 38 based on Foata normal form. 79/1124 useless extension candidates. Maximal degree in co-relation 4015. Up to 446 conditions per place. [2023-11-29 21:37:09,274 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 77 selfloop transitions, 74 changer transitions 15/239 dead transitions. [2023-11-29 21:37:09,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 239 transitions, 2523 flow [2023-11-29 21:37:09,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 21:37:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 21:37:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 871 transitions. [2023-11-29 21:37:09,276 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8334928229665072 [2023-11-29 21:37:09,276 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 871 transitions. [2023-11-29 21:37:09,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 871 transitions. [2023-11-29 21:37:09,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:09,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 871 transitions. [2023-11-29 21:37:09,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.18181818181819) internal successors, (871), 11 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 95.0) internal successors, (1140), 12 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,281 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 95.0) internal successors, (1140), 12 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,281 INFO L307 CegarLoopForPetriNet]: 80 programPoint places, 31 predicate places. [2023-11-29 21:37:09,281 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 239 transitions, 2523 flow [2023-11-29 21:37:09,282 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.875) internal successors, (615), 8 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,282 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:09,282 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:37:09,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 21:37:09,488 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 21:37:09,488 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:37:09,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:09,488 INFO L85 PathProgramCache]: Analyzing trace with hash 979823582, now seen corresponding path program 3 times [2023-11-29 21:37:09,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:09,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791015199] [2023-11-29 21:37:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:09,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 21:37:09,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:09,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791015199] [2023-11-29 21:37:09,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791015199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:37:09,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:37:09,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 21:37:09,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447655620] [2023-11-29 21:37:09,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:37:09,528 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 21:37:09,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:09,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 21:37:09,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 21:37:09,529 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2023-11-29 21:37:09,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 239 transitions, 2523 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:09,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2023-11-29 21:37:09,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:09,658 INFO L124 PetriNetUnfolderBase]: 335/1028 cut-off events. [2023-11-29 21:37:09,658 INFO L125 PetriNetUnfolderBase]: For 21419/25309 co-relation queries the response was YES. [2023-11-29 21:37:09,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 1028 events. 335/1028 cut-off events. For 21419/25309 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7236 event pairs, 20 based on Foata normal form. 144/1050 useless extension candidates. Maximal degree in co-relation 3313. Up to 389 conditions per place. [2023-11-29 21:37:09,668 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 101 selfloop transitions, 4 changer transitions 12/203 dead transitions. [2023-11-29 21:37:09,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 203 transitions, 2311 flow [2023-11-29 21:37:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 21:37:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 21:37:09,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-11-29 21:37:09,669 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8912280701754386 [2023-11-29 21:37:09,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-11-29 21:37:09,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-11-29 21:37:09,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:09,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-11-29 21:37:09,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,671 INFO L307 CegarLoopForPetriNet]: 80 programPoint places, 30 predicate places. [2023-11-29 21:37:09,672 INFO L500 AbstractCegarLoop]: Abstraction has has 110 places, 203 transitions, 2311 flow [2023-11-29 21:37:09,672 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,672 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:09,672 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:37:09,672 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 21:37:09,672 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:37:09,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:09,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1736041135, now seen corresponding path program 4 times [2023-11-29 21:37:09,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:09,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983436376] [2023-11-29 21:37:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:09,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 21:37:09,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:09,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983436376] [2023-11-29 21:37:09,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983436376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:37:09,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:37:09,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 21:37:09,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826324829] [2023-11-29 21:37:09,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:37:09,709 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 21:37:09,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:09,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 21:37:09,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 21:37:09,709 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2023-11-29 21:37:09,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 203 transitions, 2311 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:09,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2023-11-29 21:37:09,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:09,834 INFO L124 PetriNetUnfolderBase]: 327/978 cut-off events. [2023-11-29 21:37:09,834 INFO L125 PetriNetUnfolderBase]: For 21605/24287 co-relation queries the response was YES. [2023-11-29 21:37:09,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4571 conditions, 978 events. 327/978 cut-off events. For 21605/24287 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6696 event pairs, 22 based on Foata normal form. 37/909 useless extension candidates. Maximal degree in co-relation 3509. Up to 377 conditions per place. [2023-11-29 21:37:09,839 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 0 selfloop transitions, 0 changer transitions 197/197 dead transitions. [2023-11-29 21:37:09,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 197 transitions, 2603 flow [2023-11-29 21:37:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 21:37:09,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 21:37:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-11-29 21:37:09,840 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8982456140350877 [2023-11-29 21:37:09,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-11-29 21:37:09,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-11-29 21:37:09,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:09,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-11-29 21:37:09,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,843 INFO L307 CegarLoopForPetriNet]: 80 programPoint places, 26 predicate places. [2023-11-29 21:37:09,843 INFO L500 AbstractCegarLoop]: Abstraction has has 106 places, 197 transitions, 2603 flow [2023-11-29 21:37:09,843 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:37:09,849 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/parallel-misc-3.wvr.c_BEv2_AllErrorsAtOnce [2023-11-29 21:37:09,887 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 21:37:09,887 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 21:37:09,888 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 21:37:09,888 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 21:37:09,888 INFO L457 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2023-11-29 21:37:09,890 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 21:37:09,891 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 21:37:09,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:37:09 BasicIcfg [2023-11-29 21:37:09,896 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 21:37:09,897 INFO L158 Benchmark]: Toolchain (without parser) took 5138.28ms. Allocated memory was 377.5MB in the beginning and 583.0MB in the end (delta: 205.5MB). Free memory was 328.2MB in the beginning and 228.1MB in the end (delta: 100.1MB). Peak memory consumption was 307.3MB. Max. memory is 16.0GB. [2023-11-29 21:37:09,897 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 377.5MB. Free memory is still 329.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 21:37:09,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.57ms. Allocated memory is still 377.5MB. Free memory was 327.9MB in the beginning and 316.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 21:37:09,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.98ms. Allocated memory is still 377.5MB. Free memory was 316.7MB in the beginning and 315.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 21:37:09,900 INFO L158 Benchmark]: Boogie Preprocessor took 36.19ms. Allocated memory is still 377.5MB. Free memory was 314.9MB in the beginning and 313.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 21:37:09,901 INFO L158 Benchmark]: RCFGBuilder took 331.60ms. Allocated memory is still 377.5MB. Free memory was 313.5MB in the beginning and 299.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 21:37:09,901 INFO L158 Benchmark]: TraceAbstraction took 4454.61ms. Allocated memory was 377.5MB in the beginning and 583.0MB in the end (delta: 205.5MB). Free memory was 299.2MB in the beginning and 228.1MB in the end (delta: 71.1MB). Peak memory consumption was 278.0MB. Max. memory is 16.0GB. [2023-11-29 21:37:09,902 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 377.5MB. Free memory is still 329.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 266.57ms. Allocated memory is still 377.5MB. Free memory was 327.9MB in the beginning and 316.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.98ms. Allocated memory is still 377.5MB. Free memory was 316.7MB in the beginning and 315.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.19ms. Allocated memory is still 377.5MB. Free memory was 314.9MB in the beginning and 313.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 331.60ms. Allocated memory is still 377.5MB. Free memory was 313.5MB in the beginning and 299.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4454.61ms. Allocated memory was 377.5MB in the beginning and 583.0MB in the end (delta: 205.5MB). Free memory was 299.2MB in the beginning and 228.1MB in the end (delta: 71.1MB). Peak memory consumption was 278.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 117 locations, 3 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: 4.3s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 431 IncrementalHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 62 mSDtfsCounter, 431 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 367 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2603occurred in iteration=9, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 818 NumberOfCodeBlocks, 818 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 965 ConstructedInterpolants, 0 QuantifiedInterpolants, 2226 SizeOfPredicates, 4 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 62/128 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 21:37:09,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...