/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:06:29,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:06:29,804 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-SemanticLbe.epf [2023-11-17 16:06:29,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:06:29,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:06:29,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:06:29,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:06:29,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:06:29,829 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:06:29,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:06:29,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:06:29,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:06:29,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:06:29,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:06:29,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:06:29,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:06:29,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:06:29,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:06:29,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:06:29,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:06:29,833 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:06:29,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:06:29,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:06:29,841 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:06:29,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:06:29,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:06:29,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:06:29,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:06:29,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:06:29,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:06:29,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:06:29,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:06:29,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:06:30,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:06:30,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:06:30,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:06:30,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:06:30,119 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:06:30,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-11-17 16:06:31,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:06:31,440 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:06:31,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-11-17 16:06:31,447 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d04fa8ea2/742ca34cbb434cf1ba1cb7101919b1c2/FLAG75e22dc85 [2023-11-17 16:06:31,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d04fa8ea2/742ca34cbb434cf1ba1cb7101919b1c2 [2023-11-17 16:06:31,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:06:31,462 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:06:31,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:06:31,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:06:31,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:06:31,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2470788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31, skipping insertion in model container [2023-11-17 16:06:31,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,491 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:06:31,616 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-ticket-4.wvr.c[3578,3591] [2023-11-17 16:06:31,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:06:31,629 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:06:31,651 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-ticket-4.wvr.c[3578,3591] [2023-11-17 16:06:31,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:06:31,659 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:06:31,659 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:06:31,665 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:06:31,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31 WrapperNode [2023-11-17 16:06:31,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:06:31,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:06:31,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:06:31,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:06:31,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,705 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-11-17 16:06:31,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:06:31,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:06:31,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:06:31,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:06:31,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,723 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:06:31,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:06:31,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:06:31,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:06:31,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (1/1) ... [2023-11-17 16:06:31,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:06:31,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:31,766 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) [2023-11-17 16:06:31,768 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 [2023-11-17 16:06:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:06:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:06:31,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:06:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:06:31,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:06:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:06:31,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:06:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 16:06:31,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 16:06:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:06:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:06:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:06:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:06:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:06:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:06:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:06:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:06:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:06:31,793 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:06:31,877 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:06:31,879 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:06:32,223 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:06:32,317 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:06:32,318 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 16:06:32,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:06:32 BoogieIcfgContainer [2023-11-17 16:06:32,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:06:32,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:06:32,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:06:32,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:06:32,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:06:31" (1/3) ... [2023-11-17 16:06:32,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fd5457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:06:32, skipping insertion in model container [2023-11-17 16:06:32,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:31" (2/3) ... [2023-11-17 16:06:32,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fd5457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:06:32, skipping insertion in model container [2023-11-17 16:06:32,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:06:32" (3/3) ... [2023-11-17 16:06:32,329 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-17 16:06:32,344 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:06:32,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:06:32,345 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:06:32,445 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 16:06:32,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 150 transitions, 328 flow [2023-11-17 16:06:32,535 INFO L124 PetriNetUnfolderBase]: 2/146 cut-off events. [2023-11-17 16:06:32,535 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:06:32,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 146 events. 2/146 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-17 16:06:32,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 150 transitions, 328 flow [2023-11-17 16:06:32,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 290 flow [2023-11-17 16:06:32,546 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:06:32,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 133 transitions, 290 flow [2023-11-17 16:06:32,561 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 133 transitions, 290 flow [2023-11-17 16:06:32,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 133 transitions, 290 flow [2023-11-17 16:06:32,591 INFO L124 PetriNetUnfolderBase]: 2/133 cut-off events. [2023-11-17 16:06:32,591 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:06:32,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 133 events. 2/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-17 16:06:32,593 INFO L119 LiptonReduction]: Number of co-enabled transitions 1596 [2023-11-17 16:06:37,046 INFO L134 LiptonReduction]: Checked pairs total: 3198 [2023-11-17 16:06:37,046 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-11-17 16:06:37,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:06:37,072 INFO L357 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=false, 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;@a76af0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:06:37,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 16:06:37,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:06:37,079 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-11-17 16:06:37,079 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:06:37,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:37,080 INFO L208 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] [2023-11-17 16:06:37,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:37,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash -184299317, now seen corresponding path program 1 times [2023-11-17 16:06:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:37,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603886370] [2023-11-17 16:06:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:38,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603886370] [2023-11-17 16:06:38,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603886370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:38,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:38,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:06:38,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247990835] [2023-11-17 16:06:38,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:38,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:06:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:06:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:06:38,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 265 [2023-11-17 16:06:38,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:38,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 265 [2023-11-17 16:06:38,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:38,496 INFO L124 PetriNetUnfolderBase]: 1049/1613 cut-off events. [2023-11-17 16:06:38,496 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-17 16:06:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3434 conditions, 1613 events. 1049/1613 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6829 event pairs, 235 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 2616. Up to 674 conditions per place. [2023-11-17 16:06:38,506 INFO L140 encePairwiseOnDemand]: 258/265 looper letters, 62 selfloop transitions, 12 changer transitions 11/85 dead transitions. [2023-11-17 16:06:38,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 85 transitions, 406 flow [2023-11-17 16:06:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:06:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:06:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 782 transitions. [2023-11-17 16:06:38,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918238993710692 [2023-11-17 16:06:38,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 782 transitions. [2023-11-17 16:06:38,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 782 transitions. [2023-11-17 16:06:38,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:38,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 782 transitions. [2023-11-17 16:06:38,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,539 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,541 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 76 flow. Second operand 6 states and 782 transitions. [2023-11-17 16:06:38,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 85 transitions, 406 flow [2023-11-17 16:06:38,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 85 transitions, 362 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 16:06:38,548 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 140 flow [2023-11-17 16:06:38,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-11-17 16:06:38,553 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-11-17 16:06:38,553 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 140 flow [2023-11-17 16:06:38,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:38,554 INFO L208 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] [2023-11-17 16:06:38,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:06:38,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:38,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:38,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2094904781, now seen corresponding path program 2 times [2023-11-17 16:06:38,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:38,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623204413] [2023-11-17 16:06:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:38,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:38,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623204413] [2023-11-17 16:06:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623204413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:38,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:06:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489032615] [2023-11-17 16:06:38,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:38,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:06:38,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:06:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:06:38,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:38,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:38,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:38,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:38,855 INFO L124 PetriNetUnfolderBase]: 789/1230 cut-off events. [2023-11-17 16:06:38,855 INFO L125 PetriNetUnfolderBase]: For 547/547 co-relation queries the response was YES. [2023-11-17 16:06:38,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3195 conditions, 1230 events. 789/1230 cut-off events. For 547/547 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5107 event pairs, 78 based on Foata normal form. 36/1266 useless extension candidates. Maximal degree in co-relation 1930. Up to 930 conditions per place. [2023-11-17 16:06:38,863 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 56 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2023-11-17 16:06:38,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 372 flow [2023-11-17 16:06:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:06:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:06:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2023-11-17 16:06:38,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.499622641509434 [2023-11-17 16:06:38,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2023-11-17 16:06:38,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2023-11-17 16:06:38,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:38,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2023-11-17 16:06:38,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,871 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,871 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 140 flow. Second operand 5 states and 662 transitions. [2023-11-17 16:06:38,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 372 flow [2023-11-17 16:06:38,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 72 transitions, 364 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:06:38,876 INFO L231 Difference]: Finished difference. Result has 43 places, 48 transitions, 207 flow [2023-11-17 16:06:38,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=43, PETRI_TRANSITIONS=48} [2023-11-17 16:06:38,876 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-17 16:06:38,877 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 48 transitions, 207 flow [2023-11-17 16:06:38,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:38,877 INFO L208 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] [2023-11-17 16:06:38,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:06:38,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:38,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash -922937081, now seen corresponding path program 3 times [2023-11-17 16:06:38,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:38,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935273170] [2023-11-17 16:06:38,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:38,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:38,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:38,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935273170] [2023-11-17 16:06:38,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935273170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:38,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:38,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:06:38,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580012792] [2023-11-17 16:06:38,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:38,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:06:38,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:06:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:06:38,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:38,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 48 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:38,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:38,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:38,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:39,215 INFO L124 PetriNetUnfolderBase]: 811/1280 cut-off events. [2023-11-17 16:06:39,216 INFO L125 PetriNetUnfolderBase]: For 963/963 co-relation queries the response was YES. [2023-11-17 16:06:39,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 1280 events. 811/1280 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5486 event pairs, 94 based on Foata normal form. 46/1326 useless extension candidates. Maximal degree in co-relation 2527. Up to 924 conditions per place. [2023-11-17 16:06:39,224 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 54 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2023-11-17 16:06:39,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 463 flow [2023-11-17 16:06:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:06:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:06:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 660 transitions. [2023-11-17 16:06:39,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981132075471698 [2023-11-17 16:06:39,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 660 transitions. [2023-11-17 16:06:39,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 660 transitions. [2023-11-17 16:06:39,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:39,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 660 transitions. [2023-11-17 16:06:39,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,233 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,233 INFO L175 Difference]: Start difference. First operand has 43 places, 48 transitions, 207 flow. Second operand 5 states and 660 transitions. [2023-11-17 16:06:39,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 76 transitions, 463 flow [2023-11-17 16:06:39,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 76 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:06:39,240 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 311 flow [2023-11-17 16:06:39,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2023-11-17 16:06:39,242 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-11-17 16:06:39,242 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 311 flow [2023-11-17 16:06:39,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:39,243 INFO L208 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] [2023-11-17 16:06:39,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:06:39,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:39,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:39,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1114491551, now seen corresponding path program 4 times [2023-11-17 16:06:39,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:39,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088110400] [2023-11-17 16:06:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:39,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:39,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:39,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088110400] [2023-11-17 16:06:39,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088110400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:39,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:39,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:06:39,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236839005] [2023-11-17 16:06:39,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:39,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:06:39,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:39,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:06:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:06:39,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:39,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:39,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:39,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:39,728 INFO L124 PetriNetUnfolderBase]: 1386/2211 cut-off events. [2023-11-17 16:06:39,728 INFO L125 PetriNetUnfolderBase]: For 2281/2281 co-relation queries the response was YES. [2023-11-17 16:06:39,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7104 conditions, 2211 events. 1386/2211 cut-off events. For 2281/2281 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10974 event pairs, 179 based on Foata normal form. 44/2255 useless extension candidates. Maximal degree in co-relation 4188. Up to 962 conditions per place. [2023-11-17 16:06:39,742 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 73 selfloop transitions, 66 changer transitions 0/139 dead transitions. [2023-11-17 16:06:39,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 139 transitions, 967 flow [2023-11-17 16:06:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:06:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:06:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 804 transitions. [2023-11-17 16:06:39,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056603773584906 [2023-11-17 16:06:39,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 804 transitions. [2023-11-17 16:06:39,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 804 transitions. [2023-11-17 16:06:39,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:39,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 804 transitions. [2023-11-17 16:06:39,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,751 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,751 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 311 flow. Second operand 6 states and 804 transitions. [2023-11-17 16:06:39,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 139 transitions, 967 flow [2023-11-17 16:06:39,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 139 transitions, 934 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 16:06:39,762 INFO L231 Difference]: Finished difference. Result has 52 places, 100 transitions, 762 flow [2023-11-17 16:06:39,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=762, PETRI_PLACES=52, PETRI_TRANSITIONS=100} [2023-11-17 16:06:39,764 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2023-11-17 16:06:39,764 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 100 transitions, 762 flow [2023-11-17 16:06:39,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:39,765 INFO L208 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] [2023-11-17 16:06:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:06:39,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:39,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash 436660333, now seen corresponding path program 5 times [2023-11-17 16:06:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:39,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882732585] [2023-11-17 16:06:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:39,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:39,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882732585] [2023-11-17 16:06:39,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882732585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:39,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:39,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:06:39,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804050077] [2023-11-17 16:06:39,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:39,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:06:39,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:06:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:06:39,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:39,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 100 transitions, 762 flow. Second operand has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:39,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:39,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:40,168 INFO L124 PetriNetUnfolderBase]: 1378/2219 cut-off events. [2023-11-17 16:06:40,169 INFO L125 PetriNetUnfolderBase]: For 3908/3908 co-relation queries the response was YES. [2023-11-17 16:06:40,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8887 conditions, 2219 events. 1378/2219 cut-off events. For 3908/3908 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11218 event pairs, 254 based on Foata normal form. 40/2259 useless extension candidates. Maximal degree in co-relation 5193. Up to 1781 conditions per place. [2023-11-17 16:06:40,184 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 85 selfloop transitions, 41 changer transitions 3/129 dead transitions. [2023-11-17 16:06:40,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 129 transitions, 1193 flow [2023-11-17 16:06:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:06:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:06:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 658 transitions. [2023-11-17 16:06:40,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49660377358490565 [2023-11-17 16:06:40,186 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 658 transitions. [2023-11-17 16:06:40,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 658 transitions. [2023-11-17 16:06:40,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:40,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 658 transitions. [2023-11-17 16:06:40,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,190 INFO L175 Difference]: Start difference. First operand has 52 places, 100 transitions, 762 flow. Second operand 5 states and 658 transitions. [2023-11-17 16:06:40,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 129 transitions, 1193 flow [2023-11-17 16:06:40,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 129 transitions, 1174 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-17 16:06:40,203 INFO L231 Difference]: Finished difference. Result has 56 places, 109 transitions, 949 flow [2023-11-17 16:06:40,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=949, PETRI_PLACES=56, PETRI_TRANSITIONS=109} [2023-11-17 16:06:40,204 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2023-11-17 16:06:40,204 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 109 transitions, 949 flow [2023-11-17 16:06:40,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:40,205 INFO L208 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] [2023-11-17 16:06:40,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:06:40,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:40,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1488878355, now seen corresponding path program 6 times [2023-11-17 16:06:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392197269] [2023-11-17 16:06:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392197269] [2023-11-17 16:06:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392197269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:40,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:40,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:06:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907973423] [2023-11-17 16:06:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:06:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:06:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:06:40,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:40,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 109 transitions, 949 flow. Second operand has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:40,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:40,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:40,533 INFO L124 PetriNetUnfolderBase]: 831/1372 cut-off events. [2023-11-17 16:06:40,533 INFO L125 PetriNetUnfolderBase]: For 2135/2135 co-relation queries the response was YES. [2023-11-17 16:06:40,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5546 conditions, 1372 events. 831/1372 cut-off events. For 2135/2135 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6508 event pairs, 152 based on Foata normal form. 42/1414 useless extension candidates. Maximal degree in co-relation 5244. Up to 1204 conditions per place. [2023-11-17 16:06:40,544 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 84 selfloop transitions, 36 changer transitions 0/120 dead transitions. [2023-11-17 16:06:40,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 120 transitions, 1148 flow [2023-11-17 16:06:40,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:06:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:06:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 658 transitions. [2023-11-17 16:06:40,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49660377358490565 [2023-11-17 16:06:40,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 658 transitions. [2023-11-17 16:06:40,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 658 transitions. [2023-11-17 16:06:40,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:40,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 658 transitions. [2023-11-17 16:06:40,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,551 INFO L175 Difference]: Start difference. First operand has 56 places, 109 transitions, 949 flow. Second operand 5 states and 658 transitions. [2023-11-17 16:06:40,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 120 transitions, 1148 flow [2023-11-17 16:06:40,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 120 transitions, 1078 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 16:06:40,558 INFO L231 Difference]: Finished difference. Result has 56 places, 102 transitions, 873 flow [2023-11-17 16:06:40,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=873, PETRI_PLACES=56, PETRI_TRANSITIONS=102} [2023-11-17 16:06:40,561 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2023-11-17 16:06:40,561 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 102 transitions, 873 flow [2023-11-17 16:06:40,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:40,561 INFO L208 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] [2023-11-17 16:06:40,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:06:40,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:40,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash 599448617, now seen corresponding path program 7 times [2023-11-17 16:06:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:40,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97596547] [2023-11-17 16:06:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:40,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:40,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97596547] [2023-11-17 16:06:40,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97596547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:40,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:40,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:06:40,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342269099] [2023-11-17 16:06:40,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:40,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:06:40,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:40,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:06:40,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:06:40,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:40,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 102 transitions, 873 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:40,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:40,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:40,938 INFO L124 PetriNetUnfolderBase]: 990/1693 cut-off events. [2023-11-17 16:06:40,939 INFO L125 PetriNetUnfolderBase]: For 2593/2593 co-relation queries the response was YES. [2023-11-17 16:06:40,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6845 conditions, 1693 events. 990/1693 cut-off events. For 2593/2593 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8933 event pairs, 50 based on Foata normal form. 36/1729 useless extension candidates. Maximal degree in co-relation 3968. Up to 593 conditions per place. [2023-11-17 16:06:40,952 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 69 selfloop transitions, 94 changer transitions 6/169 dead transitions. [2023-11-17 16:06:40,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 169 transitions, 1561 flow [2023-11-17 16:06:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:06:40,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:06:40,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 796 transitions. [2023-11-17 16:06:40,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006289308176101 [2023-11-17 16:06:40,955 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 796 transitions. [2023-11-17 16:06:40,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 796 transitions. [2023-11-17 16:06:40,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:40,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 796 transitions. [2023-11-17 16:06:40,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,960 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,960 INFO L175 Difference]: Start difference. First operand has 56 places, 102 transitions, 873 flow. Second operand 6 states and 796 transitions. [2023-11-17 16:06:40,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 169 transitions, 1561 flow [2023-11-17 16:06:40,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 169 transitions, 1526 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 16:06:40,970 INFO L231 Difference]: Finished difference. Result has 60 places, 129 transitions, 1317 flow [2023-11-17 16:06:40,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1317, PETRI_PLACES=60, PETRI_TRANSITIONS=129} [2023-11-17 16:06:40,971 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2023-11-17 16:06:40,973 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 129 transitions, 1317 flow [2023-11-17 16:06:40,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:40,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:40,979 INFO L208 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] [2023-11-17 16:06:40,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 16:06:40,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:40,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1838560925, now seen corresponding path program 8 times [2023-11-17 16:06:40,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:40,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786458662] [2023-11-17 16:06:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:40,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:41,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:41,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786458662] [2023-11-17 16:06:41,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786458662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:41,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:41,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:06:41,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300485939] [2023-11-17 16:06:41,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:41,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:06:41,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:41,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:06:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:06:41,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:41,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 129 transitions, 1317 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:41,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:41,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:41,415 INFO L124 PetriNetUnfolderBase]: 988/1723 cut-off events. [2023-11-17 16:06:41,415 INFO L125 PetriNetUnfolderBase]: For 4183/4183 co-relation queries the response was YES. [2023-11-17 16:06:41,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8202 conditions, 1723 events. 988/1723 cut-off events. For 4183/4183 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9359 event pairs, 82 based on Foata normal form. 34/1757 useless extension candidates. Maximal degree in co-relation 4661. Up to 947 conditions per place. [2023-11-17 16:06:41,428 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 92 selfloop transitions, 76 changer transitions 1/169 dead transitions. [2023-11-17 16:06:41,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 169 transitions, 1848 flow [2023-11-17 16:06:41,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:06:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:06:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 799 transitions. [2023-11-17 16:06:41,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025157232704403 [2023-11-17 16:06:41,431 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 799 transitions. [2023-11-17 16:06:41,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 799 transitions. [2023-11-17 16:06:41,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:41,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 799 transitions. [2023-11-17 16:06:41,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,435 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,435 INFO L175 Difference]: Start difference. First operand has 60 places, 129 transitions, 1317 flow. Second operand 6 states and 799 transitions. [2023-11-17 16:06:41,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 169 transitions, 1848 flow [2023-11-17 16:06:41,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 169 transitions, 1822 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-11-17 16:06:41,449 INFO L231 Difference]: Finished difference. Result has 65 places, 134 transitions, 1535 flow [2023-11-17 16:06:41,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1535, PETRI_PLACES=65, PETRI_TRANSITIONS=134} [2023-11-17 16:06:41,450 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2023-11-17 16:06:41,450 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 134 transitions, 1535 flow [2023-11-17 16:06:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:41,451 INFO L208 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] [2023-11-17 16:06:41,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:06:41,451 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:41,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash 311519015, now seen corresponding path program 9 times [2023-11-17 16:06:41,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:41,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835314003] [2023-11-17 16:06:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:41,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:41,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:41,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835314003] [2023-11-17 16:06:41,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835314003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:41,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:41,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:06:41,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637554695] [2023-11-17 16:06:41,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:41,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:06:41,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:06:41,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:06:41,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:41,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 134 transitions, 1535 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:41,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:41,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:41,873 INFO L124 PetriNetUnfolderBase]: 997/1754 cut-off events. [2023-11-17 16:06:41,874 INFO L125 PetriNetUnfolderBase]: For 5418/5418 co-relation queries the response was YES. [2023-11-17 16:06:41,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8788 conditions, 1754 events. 997/1754 cut-off events. For 5418/5418 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9798 event pairs, 57 based on Foata normal form. 28/1782 useless extension candidates. Maximal degree in co-relation 5011. Up to 664 conditions per place. [2023-11-17 16:06:41,887 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 66 selfloop transitions, 103 changer transitions 1/170 dead transitions. [2023-11-17 16:06:41,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 170 transitions, 2061 flow [2023-11-17 16:06:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:06:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:06:41,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 794 transitions. [2023-11-17 16:06:41,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49937106918238994 [2023-11-17 16:06:41,890 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 794 transitions. [2023-11-17 16:06:41,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 794 transitions. [2023-11-17 16:06:41,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:41,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 794 transitions. [2023-11-17 16:06:41,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.33333333333334) internal successors, (794), 6 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,896 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,896 INFO L175 Difference]: Start difference. First operand has 65 places, 134 transitions, 1535 flow. Second operand 6 states and 794 transitions. [2023-11-17 16:06:41,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 170 transitions, 2061 flow [2023-11-17 16:06:41,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 170 transitions, 1970 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:06:41,911 INFO L231 Difference]: Finished difference. Result has 68 places, 139 transitions, 1761 flow [2023-11-17 16:06:41,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1761, PETRI_PLACES=68, PETRI_TRANSITIONS=139} [2023-11-17 16:06:41,912 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2023-11-17 16:06:41,912 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 139 transitions, 1761 flow [2023-11-17 16:06:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:41,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:41,913 INFO L208 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] [2023-11-17 16:06:41,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 16:06:41,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:41,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:41,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1719073251, now seen corresponding path program 10 times [2023-11-17 16:06:41,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:41,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897581062] [2023-11-17 16:06:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:42,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897581062] [2023-11-17 16:06:42,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897581062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:42,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:42,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:06:42,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076754083] [2023-11-17 16:06:42,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:42,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:06:42,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:06:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:06:42,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:42,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 139 transitions, 1761 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:42,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:42,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:42,377 INFO L124 PetriNetUnfolderBase]: 1049/1946 cut-off events. [2023-11-17 16:06:42,377 INFO L125 PetriNetUnfolderBase]: For 6539/6539 co-relation queries the response was YES. [2023-11-17 16:06:42,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10278 conditions, 1946 events. 1049/1946 cut-off events. For 6539/6539 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 11606 event pairs, 16 based on Foata normal form. 80/2026 useless extension candidates. Maximal degree in co-relation 6104. Up to 764 conditions per place. [2023-11-17 16:06:42,391 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 77 selfloop transitions, 143 changer transitions 6/226 dead transitions. [2023-11-17 16:06:42,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 226 transitions, 2826 flow [2023-11-17 16:06:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:06:42,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:06:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 936 transitions. [2023-11-17 16:06:42,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045822102425876 [2023-11-17 16:06:42,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 936 transitions. [2023-11-17 16:06:42,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 936 transitions. [2023-11-17 16:06:42,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:42,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 936 transitions. [2023-11-17 16:06:42,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.71428571428572) internal successors, (936), 7 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,400 INFO L175 Difference]: Start difference. First operand has 68 places, 139 transitions, 1761 flow. Second operand 7 states and 936 transitions. [2023-11-17 16:06:42,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 226 transitions, 2826 flow [2023-11-17 16:06:42,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 226 transitions, 2693 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:06:42,422 INFO L231 Difference]: Finished difference. Result has 74 places, 174 transitions, 2509 flow [2023-11-17 16:06:42,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2509, PETRI_PLACES=74, PETRI_TRANSITIONS=174} [2023-11-17 16:06:42,423 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 35 predicate places. [2023-11-17 16:06:42,423 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 174 transitions, 2509 flow [2023-11-17 16:06:42,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:42,424 INFO L208 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] [2023-11-17 16:06:42,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 16:06:42,424 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:42,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:42,425 INFO L85 PathProgramCache]: Analyzing trace with hash -489979499, now seen corresponding path program 11 times [2023-11-17 16:06:42,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:42,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35009662] [2023-11-17 16:06:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:42,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35009662] [2023-11-17 16:06:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35009662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:42,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:42,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:06:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252267864] [2023-11-17 16:06:42,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:42,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:06:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:06:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:06:42,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:42,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 174 transitions, 2509 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:42,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:42,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:42,869 INFO L124 PetriNetUnfolderBase]: 994/1883 cut-off events. [2023-11-17 16:06:42,869 INFO L125 PetriNetUnfolderBase]: For 9289/9289 co-relation queries the response was YES. [2023-11-17 16:06:42,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11429 conditions, 1883 events. 994/1883 cut-off events. For 9289/9289 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 11428 event pairs, 68 based on Foata normal form. 34/1917 useless extension candidates. Maximal degree in co-relation 6748. Up to 1093 conditions per place. [2023-11-17 16:06:42,884 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 123 selfloop transitions, 84 changer transitions 2/209 dead transitions. [2023-11-17 16:06:42,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 209 transitions, 3135 flow [2023-11-17 16:06:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:06:42,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:06:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 797 transitions. [2023-11-17 16:06:42,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012578616352201 [2023-11-17 16:06:42,887 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 797 transitions. [2023-11-17 16:06:42,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 797 transitions. [2023-11-17 16:06:42,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:42,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 797 transitions. [2023-11-17 16:06:42,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.83333333333334) internal successors, (797), 6 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,892 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,892 INFO L175 Difference]: Start difference. First operand has 74 places, 174 transitions, 2509 flow. Second operand 6 states and 797 transitions. [2023-11-17 16:06:42,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 209 transitions, 3135 flow [2023-11-17 16:06:42,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 209 transitions, 3043 flow, removed 44 selfloop flow, removed 1 redundant places. [2023-11-17 16:06:42,931 INFO L231 Difference]: Finished difference. Result has 78 places, 175 transitions, 2600 flow [2023-11-17 16:06:42,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2600, PETRI_PLACES=78, PETRI_TRANSITIONS=175} [2023-11-17 16:06:42,932 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2023-11-17 16:06:42,932 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 175 transitions, 2600 flow [2023-11-17 16:06:42,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:42,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:42,933 INFO L208 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] [2023-11-17 16:06:42,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 16:06:42,933 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:42,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1790167129, now seen corresponding path program 12 times [2023-11-17 16:06:42,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:42,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779344650] [2023-11-17 16:06:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:42,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:43,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:43,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779344650] [2023-11-17 16:06:43,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779344650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:43,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:43,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:06:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152815995] [2023-11-17 16:06:43,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:06:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:43,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:06:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:06:43,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:43,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 175 transitions, 2600 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:43,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:43,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:43,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:43,461 INFO L124 PetriNetUnfolderBase]: 1006/1917 cut-off events. [2023-11-17 16:06:43,461 INFO L125 PetriNetUnfolderBase]: For 10055/10055 co-relation queries the response was YES. [2023-11-17 16:06:43,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11791 conditions, 1917 events. 1006/1917 cut-off events. For 10055/10055 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11801 event pairs, 70 based on Foata normal form. 42/1959 useless extension candidates. Maximal degree in co-relation 7173. Up to 1107 conditions per place. [2023-11-17 16:06:43,476 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 134 selfloop transitions, 96 changer transitions 7/237 dead transitions. [2023-11-17 16:06:43,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 237 transitions, 3626 flow [2023-11-17 16:06:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:06:43,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:06:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1059 transitions. [2023-11-17 16:06:43,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4995283018867924 [2023-11-17 16:06:43,479 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1059 transitions. [2023-11-17 16:06:43,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1059 transitions. [2023-11-17 16:06:43,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:43,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1059 transitions. [2023-11-17 16:06:43,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.375) internal successors, (1059), 8 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:43,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:43,486 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:43,486 INFO L175 Difference]: Start difference. First operand has 78 places, 175 transitions, 2600 flow. Second operand 8 states and 1059 transitions. [2023-11-17 16:06:43,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 237 transitions, 3626 flow [2023-11-17 16:06:43,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 237 transitions, 3505 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:06:43,527 INFO L231 Difference]: Finished difference. Result has 82 places, 187 transitions, 2910 flow [2023-11-17 16:06:43,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2910, PETRI_PLACES=82, PETRI_TRANSITIONS=187} [2023-11-17 16:06:43,529 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2023-11-17 16:06:43,529 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 187 transitions, 2910 flow [2023-11-17 16:06:43,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:43,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:43,530 INFO L208 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] [2023-11-17 16:06:43,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 16:06:43,530 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:43,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:43,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1801344215, now seen corresponding path program 13 times [2023-11-17 16:06:43,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:43,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380921598] [2023-11-17 16:06:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:43,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:43,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:43,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380921598] [2023-11-17 16:06:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380921598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:43,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:43,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:06:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131909981] [2023-11-17 16:06:43,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:43,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:06:43,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:43,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:06:43,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:06:43,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:43,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 187 transitions, 2910 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:43,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:43,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:43,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:44,089 INFO L124 PetriNetUnfolderBase]: 984/1879 cut-off events. [2023-11-17 16:06:44,089 INFO L125 PetriNetUnfolderBase]: For 9949/9949 co-relation queries the response was YES. [2023-11-17 16:06:44,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11713 conditions, 1879 events. 984/1879 cut-off events. For 9949/9949 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 11570 event pairs, 20 based on Foata normal form. 6/1885 useless extension candidates. Maximal degree in co-relation 7168. Up to 719 conditions per place. [2023-11-17 16:06:44,104 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 72 selfloop transitions, 154 changer transitions 2/228 dead transitions. [2023-11-17 16:06:44,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 228 transitions, 3525 flow [2023-11-17 16:06:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:06:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:06:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 935 transitions. [2023-11-17 16:06:44,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040431266846361 [2023-11-17 16:06:44,107 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 935 transitions. [2023-11-17 16:06:44,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 935 transitions. [2023-11-17 16:06:44,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:44,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 935 transitions. [2023-11-17 16:06:44,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.57142857142858) internal successors, (935), 7 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,113 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,113 INFO L175 Difference]: Start difference. First operand has 82 places, 187 transitions, 2910 flow. Second operand 7 states and 935 transitions. [2023-11-17 16:06:44,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 228 transitions, 3525 flow [2023-11-17 16:06:44,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 228 transitions, 3409 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:06:44,154 INFO L231 Difference]: Finished difference. Result has 85 places, 184 transitions, 3064 flow [2023-11-17 16:06:44,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3064, PETRI_PLACES=85, PETRI_TRANSITIONS=184} [2023-11-17 16:06:44,154 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2023-11-17 16:06:44,154 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 184 transitions, 3064 flow [2023-11-17 16:06:44,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:44,155 INFO L208 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] [2023-11-17 16:06:44,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 16:06:44,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:44,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash -196475531, now seen corresponding path program 14 times [2023-11-17 16:06:44,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:44,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882530084] [2023-11-17 16:06:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:44,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:44,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:44,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882530084] [2023-11-17 16:06:44,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882530084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:44,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:06:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201686219] [2023-11-17 16:06:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:44,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:06:44,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:06:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:06:44,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:44,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 184 transitions, 3064 flow. Second operand has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:44,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:44,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:44,819 INFO L124 PetriNetUnfolderBase]: 1008/1937 cut-off events. [2023-11-17 16:06:44,819 INFO L125 PetriNetUnfolderBase]: For 11858/11858 co-relation queries the response was YES. [2023-11-17 16:06:44,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12633 conditions, 1937 events. 1008/1937 cut-off events. For 11858/11858 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12004 event pairs, 56 based on Foata normal form. 12/1949 useless extension candidates. Maximal degree in co-relation 7628. Up to 898 conditions per place. [2023-11-17 16:06:44,837 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 113 selfloop transitions, 142 changer transitions 10/265 dead transitions. [2023-11-17 16:06:44,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 265 transitions, 4505 flow [2023-11-17 16:06:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:06:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:06:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1174 transitions. [2023-11-17 16:06:44,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49224318658280924 [2023-11-17 16:06:44,841 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1174 transitions. [2023-11-17 16:06:44,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1174 transitions. [2023-11-17 16:06:44,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:44,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1174 transitions. [2023-11-17 16:06:44,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.44444444444446) internal successors, (1174), 9 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,861 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,861 INFO L175 Difference]: Start difference. First operand has 85 places, 184 transitions, 3064 flow. Second operand 9 states and 1174 transitions. [2023-11-17 16:06:44,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 265 transitions, 4505 flow [2023-11-17 16:06:44,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 265 transitions, 4118 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-17 16:06:44,912 INFO L231 Difference]: Finished difference. Result has 90 places, 220 transitions, 3770 flow [2023-11-17 16:06:44,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3770, PETRI_PLACES=90, PETRI_TRANSITIONS=220} [2023-11-17 16:06:44,913 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2023-11-17 16:06:44,913 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 220 transitions, 3770 flow [2023-11-17 16:06:44,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:44,914 INFO L208 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] [2023-11-17 16:06:44,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 16:06:44,914 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:44,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash -11357075, now seen corresponding path program 15 times [2023-11-17 16:06:44,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:44,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51661540] [2023-11-17 16:06:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:44,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:45,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:45,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51661540] [2023-11-17 16:06:45,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51661540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:45,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:45,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:06:45,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983332545] [2023-11-17 16:06:45,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:45,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:06:45,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:45,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:06:45,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:06:45,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:45,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 220 transitions, 3770 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:45,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:45,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:45,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:45,461 INFO L124 PetriNetUnfolderBase]: 974/1907 cut-off events. [2023-11-17 16:06:45,461 INFO L125 PetriNetUnfolderBase]: For 12427/12427 co-relation queries the response was YES. [2023-11-17 16:06:45,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12634 conditions, 1907 events. 974/1907 cut-off events. For 12427/12427 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 12021 event pairs, 60 based on Foata normal form. 42/1949 useless extension candidates. Maximal degree in co-relation 7394. Up to 1113 conditions per place. [2023-11-17 16:06:45,478 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 139 selfloop transitions, 124 changer transitions 9/272 dead transitions. [2023-11-17 16:06:45,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 272 transitions, 4803 flow [2023-11-17 16:06:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:06:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:06:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1053 transitions. [2023-11-17 16:06:45,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49669811320754714 [2023-11-17 16:06:45,482 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1053 transitions. [2023-11-17 16:06:45,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1053 transitions. [2023-11-17 16:06:45,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:45,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1053 transitions. [2023-11-17 16:06:45,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.625) internal successors, (1053), 8 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:45,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:45,488 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:45,488 INFO L175 Difference]: Start difference. First operand has 90 places, 220 transitions, 3770 flow. Second operand 8 states and 1053 transitions. [2023-11-17 16:06:45,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 272 transitions, 4803 flow [2023-11-17 16:06:45,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 272 transitions, 4760 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-17 16:06:45,552 INFO L231 Difference]: Finished difference. Result has 95 places, 226 transitions, 4085 flow [2023-11-17 16:06:45,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3735, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4085, PETRI_PLACES=95, PETRI_TRANSITIONS=226} [2023-11-17 16:06:45,553 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2023-11-17 16:06:45,553 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 226 transitions, 4085 flow [2023-11-17 16:06:45,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:45,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:45,553 INFO L208 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] [2023-11-17 16:06:45,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 16:06:45,553 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:45,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:45,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2057000487, now seen corresponding path program 16 times [2023-11-17 16:06:45,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:45,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883493279] [2023-11-17 16:06:45,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:45,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883493279] [2023-11-17 16:06:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883493279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:06:45,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071740187] [2023-11-17 16:06:45,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:45,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:06:45,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:45,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:06:45,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:06:45,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:45,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 226 transitions, 4085 flow. Second operand has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:45,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:45,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:45,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:46,153 INFO L124 PetriNetUnfolderBase]: 967/1902 cut-off events. [2023-11-17 16:06:46,153 INFO L125 PetriNetUnfolderBase]: For 13193/13193 co-relation queries the response was YES. [2023-11-17 16:06:46,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12876 conditions, 1902 events. 967/1902 cut-off events. For 13193/13193 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 12067 event pairs, 10 based on Foata normal form. 4/1906 useless extension candidates. Maximal degree in co-relation 7564. Up to 648 conditions per place. [2023-11-17 16:06:46,170 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 86 selfloop transitions, 193 changer transitions 7/286 dead transitions. [2023-11-17 16:06:46,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 286 transitions, 5051 flow [2023-11-17 16:06:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:06:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:06:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1189 transitions. [2023-11-17 16:06:46,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49853249475890987 [2023-11-17 16:06:46,174 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1189 transitions. [2023-11-17 16:06:46,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1189 transitions. [2023-11-17 16:06:46,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:46,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1189 transitions. [2023-11-17 16:06:46,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.11111111111111) internal successors, (1189), 9 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:46,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:46,181 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:46,181 INFO L175 Difference]: Start difference. First operand has 95 places, 226 transitions, 4085 flow. Second operand 9 states and 1189 transitions. [2023-11-17 16:06:46,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 286 transitions, 5051 flow [2023-11-17 16:06:46,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 286 transitions, 4917 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 16:06:46,242 INFO L231 Difference]: Finished difference. Result has 99 places, 228 transitions, 4369 flow [2023-11-17 16:06:46,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3955, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4369, PETRI_PLACES=99, PETRI_TRANSITIONS=228} [2023-11-17 16:06:46,243 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2023-11-17 16:06:46,243 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 228 transitions, 4369 flow [2023-11-17 16:06:46,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:46,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:46,244 INFO L208 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] [2023-11-17 16:06:46,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 16:06:46,244 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:46,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:46,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1099932269, now seen corresponding path program 17 times [2023-11-17 16:06:46,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:46,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775313474] [2023-11-17 16:06:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:46,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:46,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:46,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775313474] [2023-11-17 16:06:46,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775313474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:46,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:46,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:06:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938090963] [2023-11-17 16:06:46,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:06:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:46,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:06:46,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:06:46,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:46,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 228 transitions, 4369 flow. Second operand has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:46,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:46,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:46,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:46,869 INFO L124 PetriNetUnfolderBase]: 919/1854 cut-off events. [2023-11-17 16:06:46,869 INFO L125 PetriNetUnfolderBase]: For 15118/15118 co-relation queries the response was YES. [2023-11-17 16:06:46,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13233 conditions, 1854 events. 919/1854 cut-off events. For 15118/15118 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 12102 event pairs, 8 based on Foata normal form. 56/1910 useless extension candidates. Maximal degree in co-relation 8628. Up to 604 conditions per place. [2023-11-17 16:06:46,886 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 84 selfloop transitions, 189 changer transitions 23/296 dead transitions. [2023-11-17 16:06:46,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 296 transitions, 5584 flow [2023-11-17 16:06:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:06:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:06:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1193 transitions. [2023-11-17 16:06:46,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002096436058701 [2023-11-17 16:06:46,889 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1193 transitions. [2023-11-17 16:06:46,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1193 transitions. [2023-11-17 16:06:46,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:46,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1193 transitions. [2023-11-17 16:06:46,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.55555555555554) internal successors, (1193), 9 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:46,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:46,895 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:46,895 INFO L175 Difference]: Start difference. First operand has 99 places, 228 transitions, 4369 flow. Second operand 9 states and 1193 transitions. [2023-11-17 16:06:46,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 296 transitions, 5584 flow [2023-11-17 16:06:46,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 296 transitions, 5141 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-17 16:06:46,961 INFO L231 Difference]: Finished difference. Result has 103 places, 223 transitions, 4353 flow [2023-11-17 16:06:46,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3739, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4353, PETRI_PLACES=103, PETRI_TRANSITIONS=223} [2023-11-17 16:06:46,961 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 64 predicate places. [2023-11-17 16:06:46,962 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 223 transitions, 4353 flow [2023-11-17 16:06:46,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:46,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:46,962 INFO L208 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] [2023-11-17 16:06:46,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 16:06:46,962 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:46,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1605808615, now seen corresponding path program 18 times [2023-11-17 16:06:46,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043086130] [2023-11-17 16:06:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:47,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:47,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043086130] [2023-11-17 16:06:47,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043086130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:47,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:47,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:06:47,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491418184] [2023-11-17 16:06:47,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:47,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:06:47,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:47,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:06:47,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:06:47,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:47,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 223 transitions, 4353 flow. Second operand has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:47,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:47,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:47,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:47,516 INFO L124 PetriNetUnfolderBase]: 833/1690 cut-off events. [2023-11-17 16:06:47,517 INFO L125 PetriNetUnfolderBase]: For 14998/14998 co-relation queries the response was YES. [2023-11-17 16:06:47,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12288 conditions, 1690 events. 833/1690 cut-off events. For 14998/14998 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10758 event pairs, 12 based on Foata normal form. 10/1700 useless extension candidates. Maximal degree in co-relation 7479. Up to 572 conditions per place. [2023-11-17 16:06:47,530 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 80 selfloop transitions, 181 changer transitions 18/279 dead transitions. [2023-11-17 16:06:47,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 279 transitions, 5221 flow [2023-11-17 16:06:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:06:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:06:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1192 transitions. [2023-11-17 16:06:47,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49979035639413 [2023-11-17 16:06:47,533 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1192 transitions. [2023-11-17 16:06:47,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1192 transitions. [2023-11-17 16:06:47,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:47,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1192 transitions. [2023-11-17 16:06:47,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.44444444444446) internal successors, (1192), 9 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:47,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:47,538 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:47,538 INFO L175 Difference]: Start difference. First operand has 103 places, 223 transitions, 4353 flow. Second operand 9 states and 1192 transitions. [2023-11-17 16:06:47,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 279 transitions, 5221 flow [2023-11-17 16:06:47,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 279 transitions, 5113 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-17 16:06:47,595 INFO L231 Difference]: Finished difference. Result has 108 places, 213 transitions, 4412 flow [2023-11-17 16:06:47,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4200, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4412, PETRI_PLACES=108, PETRI_TRANSITIONS=213} [2023-11-17 16:06:47,596 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2023-11-17 16:06:47,596 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 213 transitions, 4412 flow [2023-11-17 16:06:47,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:47,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:47,596 INFO L208 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] [2023-11-17 16:06:47,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 16:06:47,597 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:47,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:47,597 INFO L85 PathProgramCache]: Analyzing trace with hash 121841007, now seen corresponding path program 19 times [2023-11-17 16:06:47,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:47,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862514703] [2023-11-17 16:06:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:47,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:47,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862514703] [2023-11-17 16:06:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862514703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:47,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:47,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:06:47,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362391934] [2023-11-17 16:06:47,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:47,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:06:47,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:47,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:06:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:06:47,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:47,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 213 transitions, 4412 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:47,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:47,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:47,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:48,106 INFO L124 PetriNetUnfolderBase]: 666/1335 cut-off events. [2023-11-17 16:06:48,107 INFO L125 PetriNetUnfolderBase]: For 15358/15358 co-relation queries the response was YES. [2023-11-17 16:06:48,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10333 conditions, 1335 events. 666/1335 cut-off events. For 15358/15358 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7730 event pairs, 38 based on Foata normal form. 4/1339 useless extension candidates. Maximal degree in co-relation 5991. Up to 511 conditions per place. [2023-11-17 16:06:48,121 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 100 selfloop transitions, 147 changer transitions 2/249 dead transitions. [2023-11-17 16:06:48,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 249 transitions, 5119 flow [2023-11-17 16:06:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:06:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:06:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1052 transitions. [2023-11-17 16:06:48,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962264150943396 [2023-11-17 16:06:48,128 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1052 transitions. [2023-11-17 16:06:48,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1052 transitions. [2023-11-17 16:06:48,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:48,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1052 transitions. [2023-11-17 16:06:48,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.5) internal successors, (1052), 8 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,138 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,138 INFO L175 Difference]: Start difference. First operand has 108 places, 213 transitions, 4412 flow. Second operand 8 states and 1052 transitions. [2023-11-17 16:06:48,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 249 transitions, 5119 flow [2023-11-17 16:06:48,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 249 transitions, 5032 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:06:48,201 INFO L231 Difference]: Finished difference. Result has 112 places, 217 transitions, 4675 flow [2023-11-17 16:06:48,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4309, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4675, PETRI_PLACES=112, PETRI_TRANSITIONS=217} [2023-11-17 16:06:48,202 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 73 predicate places. [2023-11-17 16:06:48,202 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 217 transitions, 4675 flow [2023-11-17 16:06:48,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:48,203 INFO L208 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] [2023-11-17 16:06:48,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 16:06:48,203 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:48,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1108858041, now seen corresponding path program 20 times [2023-11-17 16:06:48,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:48,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642603174] [2023-11-17 16:06:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:48,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:48,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642603174] [2023-11-17 16:06:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642603174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:48,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:48,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:06:48,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96217082] [2023-11-17 16:06:48,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:48,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:06:48,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:48,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:06:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:06:48,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:48,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 217 transitions, 4675 flow. Second operand has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:48,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:48,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:48,744 INFO L124 PetriNetUnfolderBase]: 667/1342 cut-off events. [2023-11-17 16:06:48,744 INFO L125 PetriNetUnfolderBase]: For 16196/16196 co-relation queries the response was YES. [2023-11-17 16:06:48,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10651 conditions, 1342 events. 667/1342 cut-off events. For 16196/16196 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7819 event pairs, 38 based on Foata normal form. 6/1348 useless extension candidates. Maximal degree in co-relation 6273. Up to 511 conditions per place. [2023-11-17 16:06:48,758 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 104 selfloop transitions, 142 changer transitions 9/255 dead transitions. [2023-11-17 16:06:48,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 255 transitions, 5416 flow [2023-11-17 16:06:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:06:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:06:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1180 transitions. [2023-11-17 16:06:48,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947589098532495 [2023-11-17 16:06:48,761 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1180 transitions. [2023-11-17 16:06:48,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1180 transitions. [2023-11-17 16:06:48,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:48,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1180 transitions. [2023-11-17 16:06:48,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 131.11111111111111) internal successors, (1180), 9 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,767 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,767 INFO L175 Difference]: Start difference. First operand has 112 places, 217 transitions, 4675 flow. Second operand 9 states and 1180 transitions. [2023-11-17 16:06:48,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 255 transitions, 5416 flow [2023-11-17 16:06:48,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 255 transitions, 5261 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 16:06:48,836 INFO L231 Difference]: Finished difference. Result has 116 places, 212 transitions, 4638 flow [2023-11-17 16:06:48,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4521, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4638, PETRI_PLACES=116, PETRI_TRANSITIONS=212} [2023-11-17 16:06:48,837 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2023-11-17 16:06:48,837 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 212 transitions, 4638 flow [2023-11-17 16:06:48,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:48,838 INFO L208 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] [2023-11-17 16:06:48,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 16:06:48,838 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:48,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2065926259, now seen corresponding path program 21 times [2023-11-17 16:06:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:48,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247379573] [2023-11-17 16:06:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:48,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247379573] [2023-11-17 16:06:48,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247379573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:48,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:48,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 16:06:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566392445] [2023-11-17 16:06:48,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:48,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:06:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:48,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:06:48,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:06:48,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:48,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 212 transitions, 4638 flow. Second operand has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:48,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:48,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:48,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:49,386 INFO L124 PetriNetUnfolderBase]: 646/1311 cut-off events. [2023-11-17 16:06:49,386 INFO L125 PetriNetUnfolderBase]: For 15680/15680 co-relation queries the response was YES. [2023-11-17 16:06:49,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10485 conditions, 1311 events. 646/1311 cut-off events. For 15680/15680 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7687 event pairs, 38 based on Foata normal form. 4/1315 useless extension candidates. Maximal degree in co-relation 6055. Up to 513 conditions per place. [2023-11-17 16:06:49,397 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 108 selfloop transitions, 138 changer transitions 9/255 dead transitions. [2023-11-17 16:06:49,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 255 transitions, 5397 flow [2023-11-17 16:06:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 16:06:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 16:06:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1550 transitions. [2023-11-17 16:06:49,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48742138364779874 [2023-11-17 16:06:49,409 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1550 transitions. [2023-11-17 16:06:49,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1550 transitions. [2023-11-17 16:06:49,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:49,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1550 transitions. [2023-11-17 16:06:49,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.16666666666666) internal successors, (1550), 12 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:49,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:49,425 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:49,425 INFO L175 Difference]: Start difference. First operand has 116 places, 212 transitions, 4638 flow. Second operand 12 states and 1550 transitions. [2023-11-17 16:06:49,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 255 transitions, 5397 flow [2023-11-17 16:06:49,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 255 transitions, 5235 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-17 16:06:49,500 INFO L231 Difference]: Finished difference. Result has 122 places, 208 transitions, 4632 flow [2023-11-17 16:06:49,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4478, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4632, PETRI_PLACES=122, PETRI_TRANSITIONS=208} [2023-11-17 16:06:49,500 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2023-11-17 16:06:49,500 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 208 transitions, 4632 flow [2023-11-17 16:06:49,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:49,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:49,501 INFO L208 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] [2023-11-17 16:06:49,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 16:06:49,501 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:49,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1833384723, now seen corresponding path program 22 times [2023-11-17 16:06:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:49,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796650919] [2023-11-17 16:06:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:49,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:49,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796650919] [2023-11-17 16:06:49,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796650919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:49,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:49,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 16:06:49,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235839132] [2023-11-17 16:06:49,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:49,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:06:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:06:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:06:49,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:49,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 208 transitions, 4632 flow. Second operand has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:49,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:49,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:49,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:50,000 INFO L124 PetriNetUnfolderBase]: 651/1342 cut-off events. [2023-11-17 16:06:50,000 INFO L125 PetriNetUnfolderBase]: For 17168/17168 co-relation queries the response was YES. [2023-11-17 16:06:50,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10989 conditions, 1342 events. 651/1342 cut-off events. For 17168/17168 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8049 event pairs, 38 based on Foata normal form. 18/1360 useless extension candidates. Maximal degree in co-relation 6567. Up to 513 conditions per place. [2023-11-17 16:06:50,008 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 100 selfloop transitions, 113 changer transitions 51/264 dead transitions. [2023-11-17 16:06:50,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 264 transitions, 5813 flow [2023-11-17 16:06:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 16:06:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 16:06:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1550 transitions. [2023-11-17 16:06:50,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48742138364779874 [2023-11-17 16:06:50,011 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1550 transitions. [2023-11-17 16:06:50,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1550 transitions. [2023-11-17 16:06:50,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:50,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1550 transitions. [2023-11-17 16:06:50,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.16666666666666) internal successors, (1550), 12 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,018 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,018 INFO L175 Difference]: Start difference. First operand has 122 places, 208 transitions, 4632 flow. Second operand 12 states and 1550 transitions. [2023-11-17 16:06:50,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 264 transitions, 5813 flow [2023-11-17 16:06:50,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 264 transitions, 5358 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-17 16:06:50,083 INFO L231 Difference]: Finished difference. Result has 124 places, 183 transitions, 3822 flow [2023-11-17 16:06:50,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3822, PETRI_PLACES=124, PETRI_TRANSITIONS=183} [2023-11-17 16:06:50,084 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2023-11-17 16:06:50,084 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 183 transitions, 3822 flow [2023-11-17 16:06:50,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:50,084 INFO L208 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] [2023-11-17 16:06:50,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 16:06:50,085 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:50,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash -502677241, now seen corresponding path program 23 times [2023-11-17 16:06:50,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:50,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573776589] [2023-11-17 16:06:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:50,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:50,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:50,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573776589] [2023-11-17 16:06:50,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573776589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:50,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:50,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:06:50,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487532126] [2023-11-17 16:06:50,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:50,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:06:50,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:50,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:06:50,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:06:50,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:50,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 183 transitions, 3822 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:50,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:50,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:50,480 INFO L124 PetriNetUnfolderBase]: 565/1172 cut-off events. [2023-11-17 16:06:50,480 INFO L125 PetriNetUnfolderBase]: For 14880/14880 co-relation queries the response was YES. [2023-11-17 16:06:50,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9367 conditions, 1172 events. 565/1172 cut-off events. For 14880/14880 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6748 event pairs, 38 based on Foata normal form. 4/1176 useless extension candidates. Maximal degree in co-relation 4895. Up to 513 conditions per place. [2023-11-17 16:06:50,487 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 97 selfloop transitions, 112 changer transitions 8/217 dead transitions. [2023-11-17 16:06:50,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 217 transitions, 4404 flow [2023-11-17 16:06:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:06:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:06:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1053 transitions. [2023-11-17 16:06:50,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49669811320754714 [2023-11-17 16:06:50,489 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1053 transitions. [2023-11-17 16:06:50,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1053 transitions. [2023-11-17 16:06:50,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:50,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1053 transitions. [2023-11-17 16:06:50,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.625) internal successors, (1053), 8 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,494 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,494 INFO L175 Difference]: Start difference. First operand has 124 places, 183 transitions, 3822 flow. Second operand 8 states and 1053 transitions. [2023-11-17 16:06:50,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 217 transitions, 4404 flow [2023-11-17 16:06:50,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 217 transitions, 4275 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-17 16:06:50,549 INFO L231 Difference]: Finished difference. Result has 122 places, 181 transitions, 3895 flow [2023-11-17 16:06:50,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3895, PETRI_PLACES=122, PETRI_TRANSITIONS=181} [2023-11-17 16:06:50,550 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2023-11-17 16:06:50,550 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 181 transitions, 3895 flow [2023-11-17 16:06:50,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:50,551 INFO L208 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] [2023-11-17 16:06:50,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 16:06:50,551 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:50,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:50,552 INFO L85 PathProgramCache]: Analyzing trace with hash -630913229, now seen corresponding path program 24 times [2023-11-17 16:06:50,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:50,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865007220] [2023-11-17 16:06:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:50,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:50,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:50,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865007220] [2023-11-17 16:06:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865007220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:50,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:50,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 16:06:50,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770157231] [2023-11-17 16:06:50,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:50,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:06:50,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:50,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:06:50,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:06:50,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:50,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 181 transitions, 3895 flow. Second operand has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:50,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:50,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:50,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:51,090 INFO L124 PetriNetUnfolderBase]: 562/1175 cut-off events. [2023-11-17 16:06:51,091 INFO L125 PetriNetUnfolderBase]: For 14371/14371 co-relation queries the response was YES. [2023-11-17 16:06:51,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9357 conditions, 1175 events. 562/1175 cut-off events. For 14371/14371 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6845 event pairs, 44 based on Foata normal form. 8/1183 useless extension candidates. Maximal degree in co-relation 5117. Up to 515 conditions per place. [2023-11-17 16:06:51,098 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 102 selfloop transitions, 105 changer transitions 27/234 dead transitions. [2023-11-17 16:06:51,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 234 transitions, 4770 flow [2023-11-17 16:06:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 16:06:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 16:06:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1553 transitions. [2023-11-17 16:06:51,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48836477987421384 [2023-11-17 16:06:51,101 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1553 transitions. [2023-11-17 16:06:51,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1553 transitions. [2023-11-17 16:06:51,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:51,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1553 transitions. [2023-11-17 16:06:51,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.41666666666666) internal successors, (1553), 12 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,108 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,108 INFO L175 Difference]: Start difference. First operand has 122 places, 181 transitions, 3895 flow. Second operand 12 states and 1553 transitions. [2023-11-17 16:06:51,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 234 transitions, 4770 flow [2023-11-17 16:06:51,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 234 transitions, 4638 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 16:06:51,162 INFO L231 Difference]: Finished difference. Result has 129 places, 174 transitions, 3750 flow [2023-11-17 16:06:51,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3768, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3750, PETRI_PLACES=129, PETRI_TRANSITIONS=174} [2023-11-17 16:06:51,162 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2023-11-17 16:06:51,162 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 174 transitions, 3750 flow [2023-11-17 16:06:51,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:51,163 INFO L208 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] [2023-11-17 16:06:51,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 16:06:51,163 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:51,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1293761183, now seen corresponding path program 25 times [2023-11-17 16:06:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:51,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380033160] [2023-11-17 16:06:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:51,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:51,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380033160] [2023-11-17 16:06:51,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380033160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:51,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:51,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:06:51,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427000811] [2023-11-17 16:06:51,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:51,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:06:51,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:06:51,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:06:51,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:51,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 174 transitions, 3750 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:51,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:51,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:51,491 INFO L124 PetriNetUnfolderBase]: 343/762 cut-off events. [2023-11-17 16:06:51,491 INFO L125 PetriNetUnfolderBase]: For 11671/11671 co-relation queries the response was YES. [2023-11-17 16:06:51,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5965 conditions, 762 events. 343/762 cut-off events. For 11671/11671 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4236 event pairs, 40 based on Foata normal form. 64/826 useless extension candidates. Maximal degree in co-relation 3323. Up to 432 conditions per place. [2023-11-17 16:06:51,495 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 80 selfloop transitions, 24 changer transitions 45/149 dead transitions. [2023-11-17 16:06:51,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 149 transitions, 2985 flow [2023-11-17 16:06:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:06:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:06:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1039 transitions. [2023-11-17 16:06:51,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4900943396226415 [2023-11-17 16:06:51,497 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1039 transitions. [2023-11-17 16:06:51,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1039 transitions. [2023-11-17 16:06:51,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:51,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1039 transitions. [2023-11-17 16:06:51,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.875) internal successors, (1039), 8 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,501 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,501 INFO L175 Difference]: Start difference. First operand has 129 places, 174 transitions, 3750 flow. Second operand 8 states and 1039 transitions. [2023-11-17 16:06:51,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 149 transitions, 2985 flow [2023-11-17 16:06:51,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 149 transitions, 2769 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-17 16:06:51,531 INFO L231 Difference]: Finished difference. Result has 123 places, 93 transitions, 1508 flow [2023-11-17 16:06:51,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1508, PETRI_PLACES=123, PETRI_TRANSITIONS=93} [2023-11-17 16:06:51,532 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2023-11-17 16:06:51,532 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 93 transitions, 1508 flow [2023-11-17 16:06:51,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:51,533 INFO L208 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] [2023-11-17 16:06:51,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 16:06:51,533 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:51,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:51,533 INFO L85 PathProgramCache]: Analyzing trace with hash -391227585, now seen corresponding path program 26 times [2023-11-17 16:06:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:51,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135430195] [2023-11-17 16:06:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:51,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:51,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135430195] [2023-11-17 16:06:51,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135430195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:51,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:51,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:06:51,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413589758] [2023-11-17 16:06:51,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:51,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:06:51,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:51,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:06:51,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:06:51,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:51,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 93 transitions, 1508 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:51,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:51,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:51,763 INFO L124 PetriNetUnfolderBase]: 137/328 cut-off events. [2023-11-17 16:06:51,763 INFO L125 PetriNetUnfolderBase]: For 3532/3532 co-relation queries the response was YES. [2023-11-17 16:06:51,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2343 conditions, 328 events. 137/328 cut-off events. For 3532/3532 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1477 event pairs, 8 based on Foata normal form. 24/352 useless extension candidates. Maximal degree in co-relation 1570. Up to 101 conditions per place. [2023-11-17 16:06:51,766 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 42 selfloop transitions, 33 changer transitions 11/86 dead transitions. [2023-11-17 16:06:51,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 86 transitions, 1428 flow [2023-11-17 16:06:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:06:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:06:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 777 transitions. [2023-11-17 16:06:51,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48867924528301887 [2023-11-17 16:06:51,768 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 777 transitions. [2023-11-17 16:06:51,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 777 transitions. [2023-11-17 16:06:51,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:51,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 777 transitions. [2023-11-17 16:06:51,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,772 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,772 INFO L175 Difference]: Start difference. First operand has 123 places, 93 transitions, 1508 flow. Second operand 6 states and 777 transitions. [2023-11-17 16:06:51,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 86 transitions, 1428 flow [2023-11-17 16:06:51,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 1093 flow, removed 8 selfloop flow, removed 33 redundant places. [2023-11-17 16:06:51,783 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 855 flow [2023-11-17 16:06:51,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=855, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2023-11-17 16:06:51,785 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2023-11-17 16:06:51,785 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 855 flow [2023-11-17 16:06:51,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:51,786 INFO L208 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] [2023-11-17 16:06:51,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 16:06:51,786 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:51,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2135591591, now seen corresponding path program 27 times [2023-11-17 16:06:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:51,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962839141] [2023-11-17 16:06:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:51,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:51,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:51,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962839141] [2023-11-17 16:06:51,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962839141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:51,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:51,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:06:51,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885382722] [2023-11-17 16:06:51,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:51,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:06:51,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:51,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:06:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:06:51,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:51,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 855 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:51,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:51,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:51,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:52,001 INFO L124 PetriNetUnfolderBase]: 75/190 cut-off events. [2023-11-17 16:06:52,001 INFO L125 PetriNetUnfolderBase]: For 1410/1410 co-relation queries the response was YES. [2023-11-17 16:06:52,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 190 events. 75/190 cut-off events. For 1410/1410 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 694 event pairs, 0 based on Foata normal form. 4/194 useless extension candidates. Maximal degree in co-relation 948. Up to 72 conditions per place. [2023-11-17 16:06:52,003 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 30 selfloop transitions, 32 changer transitions 10/72 dead transitions. [2023-11-17 16:06:52,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 987 flow [2023-11-17 16:06:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:06:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:06:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 892 transitions. [2023-11-17 16:06:52,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086253369272236 [2023-11-17 16:06:52,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 892 transitions. [2023-11-17 16:06:52,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 892 transitions. [2023-11-17 16:06:52,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:52,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 892 transitions. [2023-11-17 16:06:52,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.42857142857143) internal successors, (892), 7 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,010 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,011 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 855 flow. Second operand 7 states and 892 transitions. [2023-11-17 16:06:52,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 987 flow [2023-11-17 16:06:52,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 844 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-17 16:06:52,017 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 595 flow [2023-11-17 16:06:52,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=595, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2023-11-17 16:06:52,017 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2023-11-17 16:06:52,018 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 595 flow [2023-11-17 16:06:52,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:52,018 INFO L208 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] [2023-11-17 16:06:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 16:06:52,019 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:52,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1993546009, now seen corresponding path program 28 times [2023-11-17 16:06:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927038283] [2023-11-17 16:06:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:52,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:52,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:52,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927038283] [2023-11-17 16:06:52,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927038283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:52,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:52,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:06:52,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148415485] [2023-11-17 16:06:52,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:52,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:06:52,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:52,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:06:52,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:06:52,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:52,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 595 flow. Second operand has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:52,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:52,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:52,270 INFO L124 PetriNetUnfolderBase]: 53/144 cut-off events. [2023-11-17 16:06:52,270 INFO L125 PetriNetUnfolderBase]: For 808/808 co-relation queries the response was YES. [2023-11-17 16:06:52,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 144 events. 53/144 cut-off events. For 808/808 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 455 event pairs, 0 based on Foata normal form. 2/146 useless extension candidates. Maximal degree in co-relation 710. Up to 38 conditions per place. [2023-11-17 16:06:52,271 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 30 selfloop transitions, 22 changer transitions 11/63 dead transitions. [2023-11-17 16:06:52,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 63 transitions, 742 flow [2023-11-17 16:06:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:06:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:06:52,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1137 transitions. [2023-11-17 16:06:52,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767295597484277 [2023-11-17 16:06:52,273 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1137 transitions. [2023-11-17 16:06:52,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1137 transitions. [2023-11-17 16:06:52,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:52,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1137 transitions. [2023-11-17 16:06:52,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.33333333333333) internal successors, (1137), 9 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,277 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 595 flow. Second operand 9 states and 1137 transitions. [2023-11-17 16:06:52,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 63 transitions, 742 flow [2023-11-17 16:06:52,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 608 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-17 16:06:52,281 INFO L231 Difference]: Finished difference. Result has 74 places, 42 transitions, 397 flow [2023-11-17 16:06:52,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=397, PETRI_PLACES=74, PETRI_TRANSITIONS=42} [2023-11-17 16:06:52,285 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 35 predicate places. [2023-11-17 16:06:52,285 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 42 transitions, 397 flow [2023-11-17 16:06:52,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:52,285 INFO L208 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] [2023-11-17 16:06:52,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 16:06:52,286 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:52,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2119713709, now seen corresponding path program 29 times [2023-11-17 16:06:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:52,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173200371] [2023-11-17 16:06:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:52,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:52,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173200371] [2023-11-17 16:06:52,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173200371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:52,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:52,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:06:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559533731] [2023-11-17 16:06:52,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:52,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:06:52,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:52,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:06:52,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:06:52,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:52,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 42 transitions, 397 flow. Second operand has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:52,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:52,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:52,533 INFO L124 PetriNetUnfolderBase]: 34/101 cut-off events. [2023-11-17 16:06:52,533 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2023-11-17 16:06:52,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 101 events. 34/101 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 0 based on Foata normal form. 4/105 useless extension candidates. Maximal degree in co-relation 445. Up to 26 conditions per place. [2023-11-17 16:06:52,533 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 26 selfloop transitions, 13 changer transitions 9/48 dead transitions. [2023-11-17 16:06:52,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 48 transitions, 478 flow [2023-11-17 16:06:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:06:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:06:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1006 transitions. [2023-11-17 16:06:52,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47452830188679246 [2023-11-17 16:06:52,535 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1006 transitions. [2023-11-17 16:06:52,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1006 transitions. [2023-11-17 16:06:52,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:52,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1006 transitions. [2023-11-17 16:06:52,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.75) internal successors, (1006), 8 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,539 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,539 INFO L175 Difference]: Start difference. First operand has 74 places, 42 transitions, 397 flow. Second operand 8 states and 1006 transitions. [2023-11-17 16:06:52,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 48 transitions, 478 flow [2023-11-17 16:06:52,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 312 flow, removed 3 selfloop flow, removed 26 redundant places. [2023-11-17 16:06:52,542 INFO L231 Difference]: Finished difference. Result has 55 places, 31 transitions, 160 flow [2023-11-17 16:06:52,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=31} [2023-11-17 16:06:52,542 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2023-11-17 16:06:52,543 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 31 transitions, 160 flow [2023-11-17 16:06:52,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:52,543 INFO L208 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] [2023-11-17 16:06:52,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 16:06:52,543 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:52,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1167381365, now seen corresponding path program 30 times [2023-11-17 16:06:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:52,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854934506] [2023-11-17 16:06:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:52,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:52,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:52,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854934506] [2023-11-17 16:06:52,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854934506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:52,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:52,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 16:06:52,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933145965] [2023-11-17 16:06:52,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:52,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:06:52,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:52,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:06:52,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:06:52,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 265 [2023-11-17 16:06:52,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 31 transitions, 160 flow. Second operand has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:52,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 265 [2023-11-17 16:06:52,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:52,745 INFO L124 PetriNetUnfolderBase]: 16/51 cut-off events. [2023-11-17 16:06:52,745 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-17 16:06:52,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 51 events. 16/51 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 2/53 useless extension candidates. Maximal degree in co-relation 198. Up to 13 conditions per place. [2023-11-17 16:06:52,746 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-11-17 16:06:52,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 29 transitions, 207 flow [2023-11-17 16:06:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:06:52,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:06:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1109 transitions. [2023-11-17 16:06:52,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649895178197065 [2023-11-17 16:06:52,748 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1109 transitions. [2023-11-17 16:06:52,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1109 transitions. [2023-11-17 16:06:52,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:52,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1109 transitions. [2023-11-17 16:06:52,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 123.22222222222223) internal successors, (1109), 9 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,751 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,751 INFO L175 Difference]: Start difference. First operand has 55 places, 31 transitions, 160 flow. Second operand 9 states and 1109 transitions. [2023-11-17 16:06:52,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 29 transitions, 207 flow [2023-11-17 16:06:52,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 146 flow, removed 2 selfloop flow, removed 16 redundant places. [2023-11-17 16:06:52,752 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-11-17 16:06:52,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-11-17 16:06:52,753 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-11-17 16:06:52,753 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-11-17 16:06:52,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:52,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 16:06:52,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-17 16:06:52,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 16:06:52,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 16:06:52,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-17 16:06:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 16:06:52,757 INFO L445 BasicCegarLoop]: Path program histogram: [30] [2023-11-17 16:06:52,759 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:06:52,759 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:06:52,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:06:52 BasicIcfg [2023-11-17 16:06:52,762 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:06:52,763 INFO L158 Benchmark]: Toolchain (without parser) took 21300.73ms. Allocated memory was 218.1MB in the beginning and 594.5MB in the end (delta: 376.4MB). Free memory was 172.8MB in the beginning and 404.2MB in the end (delta: -231.5MB). Peak memory consumption was 145.7MB. Max. memory is 8.0GB. [2023-11-17 16:06:52,763 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 218.1MB. Free memory is still 176.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:06:52,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.25ms. Allocated memory is still 218.1MB. Free memory was 172.5MB in the beginning and 160.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:06:52,763 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.61ms. Allocated memory is still 218.1MB. Free memory was 160.9MB in the beginning and 158.5MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 16:06:52,763 INFO L158 Benchmark]: Boogie Preprocessor took 24.27ms. Allocated memory is still 218.1MB. Free memory was 158.5MB in the beginning and 157.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:06:52,764 INFO L158 Benchmark]: RCFGBuilder took 588.42ms. Allocated memory is still 218.1MB. Free memory was 157.1MB in the beginning and 132.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-11-17 16:06:52,764 INFO L158 Benchmark]: TraceAbstraction took 20439.15ms. Allocated memory was 218.1MB in the beginning and 594.5MB in the end (delta: 376.4MB). Free memory was 132.3MB in the beginning and 404.2MB in the end (delta: -272.0MB). Peak memory consumption was 104.8MB. Max. memory is 8.0GB. [2023-11-17 16:06:52,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 218.1MB. Free memory is still 176.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.25ms. Allocated memory is still 218.1MB. Free memory was 172.5MB in the beginning and 160.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.61ms. Allocated memory is still 218.1MB. Free memory was 160.9MB in the beginning and 158.5MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.27ms. Allocated memory is still 218.1MB. Free memory was 158.5MB in the beginning and 157.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 588.42ms. Allocated memory is still 218.1MB. Free memory was 157.1MB in the beginning and 132.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 20439.15ms. Allocated memory was 218.1MB in the beginning and 594.5MB in the end (delta: 376.4MB). Free memory was 132.3MB in the beginning and 404.2MB in the end (delta: -272.0MB). Peak memory consumption was 104.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 144 PlacesBefore, 39 PlacesAfterwards, 133 TransitionsBefore, 26 TransitionsAfterwards, 1596 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 115 TotalNumberOfCompositions, 3198 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2022, independent: 1923, independent conditional: 0, independent unconditional: 1923, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1182, independent: 1148, independent conditional: 0, independent unconditional: 1148, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1182, independent: 1115, independent conditional: 0, independent unconditional: 1115, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 67, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 167, independent: 71, independent conditional: 0, independent unconditional: 71, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2022, independent: 775, independent conditional: 0, independent unconditional: 775, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 1182, unknown conditional: 0, unknown unconditional: 1182] , Statistics on independence cache: Total cache size (in pairs): 104, Positive cache size: 92, Positive conditional cache size: 0, Positive unconditional cache size: 92, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 146]: 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 9 procedures, 186 locations, 5 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: 20.3s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 851 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 851 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 437 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7290 IncrementalHoareTripleChecker+Invalid, 7727 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 437 mSolverCounterUnsat, 0 mSDtfsCounter, 7290 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4675occurred in iteration=19, InterpolantAutomatonStates: 230, 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, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 780 NumberOfCodeBlocks, 780 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 750 ConstructedInterpolants, 0 QuantifiedInterpolants, 2216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 16:06:52,785 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...