/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:09:12,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:09:12,894 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 12:09:12,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:09:12,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:09:12,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:09:12,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:09:12,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:09:12,932 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:09:12,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:09:12,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:09:12,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:09:12,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:09:12,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:09:12,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:09:12,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:09:12,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:09:12,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:09:12,939 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:09:12,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:09:12,939 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:09:12,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:09:12,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:09:12,941 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:09:12,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:09:12,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:09:12,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:09:12,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:09:12,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:09:12,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:09:12,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:09:12,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:09:12,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:09:13,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:09:13,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:09:13,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:09:13,223 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:09:13,223 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:09:13,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-11-17 12:09:14,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:09:14,605 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:09:14,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-11-17 12:09:14,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd16da8f8/f893a4eb8cb04b6b9940fa02a100f0de/FLAG86960db94 [2023-11-17 12:09:14,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd16da8f8/f893a4eb8cb04b6b9940fa02a100f0de [2023-11-17 12:09:14,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:09:14,626 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:09:14,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:09:14,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:09:14,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:09:14,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3535c992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14, skipping insertion in model container [2023-11-17 12:09:14,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,664 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:09:14,818 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-5.wvr.c[4028,4041] [2023-11-17 12:09:14,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:09:14,830 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:09:14,855 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-5.wvr.c[4028,4041] [2023-11-17 12:09:14,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:09:14,863 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:09:14,864 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:09:14,870 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:09:14,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14 WrapperNode [2023-11-17 12:09:14,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:09:14,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:09:14,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:09:14,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:09:14,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,914 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 251 [2023-11-17 12:09:14,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:09:14,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:09:14,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:09:14,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:09:14,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:09:14,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:09:14,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:09:14,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:09:14,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (1/1) ... [2023-11-17 12:09:14,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:09:14,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:09:14,998 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 12:09:15,008 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 12:09:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:09:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:09:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:09:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:09:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:09:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 12:09:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 12:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-17 12:09:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-17 12:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:09:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:09:15,035 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 12:09:15,142 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:09:15,144 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:09:15,439 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:09:15,764 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:09:15,764 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 12:09:15,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:09:15 BoogieIcfgContainer [2023-11-17 12:09:15,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:09:15,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:09:15,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:09:15,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:09:15,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:09:14" (1/3) ... [2023-11-17 12:09:15,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e2ed9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:09:15, skipping insertion in model container [2023-11-17 12:09:15,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:14" (2/3) ... [2023-11-17 12:09:15,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e2ed9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:09:15, skipping insertion in model container [2023-11-17 12:09:15,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:09:15" (3/3) ... [2023-11-17 12:09:15,776 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-11-17 12:09:15,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:09:15,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:09:15,797 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:09:15,873 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-17 12:09:15,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 59 transitions, 153 flow [2023-11-17 12:09:15,967 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2023-11-17 12:09:15,968 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-17 12:09:15,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 54 events. 0/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:09:15,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 59 transitions, 153 flow [2023-11-17 12:09:15,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 53 transitions, 136 flow [2023-11-17 12:09:15,979 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:09:15,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 53 transitions, 136 flow [2023-11-17 12:09:16,004 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 53 transitions, 136 flow [2023-11-17 12:09:16,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 53 transitions, 136 flow [2023-11-17 12:09:16,033 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2023-11-17 12:09:16,033 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-17 12:09:16,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 53 events. 0/53 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:09:16,035 INFO L119 LiptonReduction]: Number of co-enabled transitions 1326 [2023-11-17 12:09:17,056 INFO L134 LiptonReduction]: Checked pairs total: 2372 [2023-11-17 12:09:17,056 INFO L136 LiptonReduction]: Total number of compositions: 21 [2023-11-17 12:09:17,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:09:17,076 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;@1ff26be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:09:17,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 12:09:17,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:09:17,086 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2023-11-17 12:09:17,086 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-17 12:09:17,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:17,087 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:17,088 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 3 more)] === [2023-11-17 12:09:17,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:17,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1153999988, now seen corresponding path program 1 times [2023-11-17 12:09:17,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:17,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974048405] [2023-11-17 12:09:17,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:17,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:18,413 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 12:09:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974048405] [2023-11-17 12:09:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974048405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:09:18,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221205814] [2023-11-17 12:09:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:18,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:18,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:18,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 80 [2023-11-17 12:09:18,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 12:09:18,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:18,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 80 [2023-11-17 12:09:18,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:19,297 INFO L124 PetriNetUnfolderBase]: 4477/6257 cut-off events. [2023-11-17 12:09:19,297 INFO L125 PetriNetUnfolderBase]: For 612/612 co-relation queries the response was YES. [2023-11-17 12:09:19,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13169 conditions, 6257 events. 4477/6257 cut-off events. For 612/612 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28335 event pairs, 1201 based on Foata normal form. 1/6258 useless extension candidates. Maximal degree in co-relation 10166. Up to 2759 conditions per place. [2023-11-17 12:09:19,345 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 70 selfloop transitions, 11 changer transitions 10/91 dead transitions. [2023-11-17 12:09:19,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 439 flow [2023-11-17 12:09:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2023-11-17 12:09:19,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3675 [2023-11-17 12:09:19,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 147 transitions. [2023-11-17 12:09:19,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 147 transitions. [2023-11-17 12:09:19,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:19,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 147 transitions. [2023-11-17 12:09:19,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 12:09:19,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:19,421 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:19,423 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 94 flow. Second operand 5 states and 147 transitions. [2023-11-17 12:09:19,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 439 flow [2023-11-17 12:09:19,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 91 transitions, 389 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-17 12:09:19,441 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 150 flow [2023-11-17 12:09:19,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-11-17 12:09:19,449 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2023-11-17 12:09:19,449 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 150 flow [2023-11-17 12:09:19,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 12:09:19,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:19,449 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:19,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:09:19,450 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 3 more)] === [2023-11-17 12:09:19,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:19,451 INFO L85 PathProgramCache]: Analyzing trace with hash -629240590, now seen corresponding path program 2 times [2023-11-17 12:09:19,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:19,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23926231] [2023-11-17 12:09:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:19,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:20,037 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 12:09:20,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:20,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23926231] [2023-11-17 12:09:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23926231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:20,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:20,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:20,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178844532] [2023-11-17 12:09:20,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:20,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:09:20,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:20,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:09:20,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:09:20,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 80 [2023-11-17 12:09:20,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 12:09:20,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:20,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 80 [2023-11-17 12:09:20,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:20,783 INFO L124 PetriNetUnfolderBase]: 4297/6077 cut-off events. [2023-11-17 12:09:20,783 INFO L125 PetriNetUnfolderBase]: For 2606/2606 co-relation queries the response was YES. [2023-11-17 12:09:20,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17123 conditions, 6077 events. 4297/6077 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 28395 event pairs, 869 based on Foata normal form. 1/6078 useless extension candidates. Maximal degree in co-relation 11137. Up to 2648 conditions per place. [2023-11-17 12:09:20,822 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 81 selfloop transitions, 15 changer transitions 16/112 dead transitions. [2023-11-17 12:09:20,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 112 transitions, 585 flow [2023-11-17 12:09:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:09:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:09:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2023-11-17 12:09:20,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2023-11-17 12:09:20,827 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 175 transitions. [2023-11-17 12:09:20,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 175 transitions. [2023-11-17 12:09:20,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:20,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 175 transitions. [2023-11-17 12:09:20,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 12:09:20,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 12:09:20,833 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 12:09:20,833 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 150 flow. Second operand 6 states and 175 transitions. [2023-11-17 12:09:20,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 112 transitions, 585 flow [2023-11-17 12:09:20,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 112 transitions, 572 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:20,840 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 227 flow [2023-11-17 12:09:20,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-17 12:09:20,841 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-11-17 12:09:20,843 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 227 flow [2023-11-17 12:09:20,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 12:09:20,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:20,850 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:20,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:09:20,851 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 3 more)] === [2023-11-17 12:09:20,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:20,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1166733446, now seen corresponding path program 3 times [2023-11-17 12:09:20,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:20,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427079383] [2023-11-17 12:09:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:20,990 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 12:09:20,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:20,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427079383] [2023-11-17 12:09:20,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427079383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:20,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:20,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:20,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897781306] [2023-11-17 12:09:20,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:20,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:20,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:20,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:20,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:20,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:09:20,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:20,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:20,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:22,085 INFO L124 PetriNetUnfolderBase]: 6706/9585 cut-off events. [2023-11-17 12:09:22,085 INFO L125 PetriNetUnfolderBase]: For 24199/24199 co-relation queries the response was YES. [2023-11-17 12:09:22,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34533 conditions, 9585 events. 6706/9585 cut-off events. For 24199/24199 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 51365 event pairs, 1380 based on Foata normal form. 250/9835 useless extension candidates. Maximal degree in co-relation 17613. Up to 3497 conditions per place. [2023-11-17 12:09:22,168 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 87 selfloop transitions, 46 changer transitions 0/133 dead transitions. [2023-11-17 12:09:22,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 133 transitions, 897 flow [2023-11-17 12:09:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:22,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2023-11-17 12:09:22,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2023-11-17 12:09:22,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 188 transitions. [2023-11-17 12:09:22,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 188 transitions. [2023-11-17 12:09:22,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:22,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 188 transitions. [2023-11-17 12:09:22,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 12:09:22,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:22,172 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:22,173 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 227 flow. Second operand 5 states and 188 transitions. [2023-11-17 12:09:22,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 133 transitions, 897 flow [2023-11-17 12:09:22,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 133 transitions, 753 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-11-17 12:09:22,190 INFO L231 Difference]: Finished difference. Result has 50 places, 82 transitions, 519 flow [2023-11-17 12:09:22,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=50, PETRI_TRANSITIONS=82} [2023-11-17 12:09:22,191 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-11-17 12:09:22,191 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 82 transitions, 519 flow [2023-11-17 12:09:22,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:09:22,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:22,191 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:22,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:09:22,192 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 3 more)] === [2023-11-17 12:09:22,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:22,192 INFO L85 PathProgramCache]: Analyzing trace with hash 77090680, now seen corresponding path program 4 times [2023-11-17 12:09:22,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:22,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286506883] [2023-11-17 12:09:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:22,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:22,306 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 12:09:22,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:22,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286506883] [2023-11-17 12:09:22,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286506883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:22,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:22,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:22,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326016043] [2023-11-17 12:09:22,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:22,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:22,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:22,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:22,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:22,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:22,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 82 transitions, 519 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:09:22,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:22,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:22,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:23,434 INFO L124 PetriNetUnfolderBase]: 7079/10168 cut-off events. [2023-11-17 12:09:23,434 INFO L125 PetriNetUnfolderBase]: For 23231/23231 co-relation queries the response was YES. [2023-11-17 12:09:23,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41299 conditions, 10168 events. 7079/10168 cut-off events. For 23231/23231 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 55723 event pairs, 1448 based on Foata normal form. 234/10402 useless extension candidates. Maximal degree in co-relation 9824. Up to 4329 conditions per place. [2023-11-17 12:09:23,518 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 83 selfloop transitions, 68 changer transitions 0/151 dead transitions. [2023-11-17 12:09:23,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 151 transitions, 1143 flow [2023-11-17 12:09:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2023-11-17 12:09:23,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2023-11-17 12:09:23,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 184 transitions. [2023-11-17 12:09:23,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 184 transitions. [2023-11-17 12:09:23,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:23,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 184 transitions. [2023-11-17 12:09:23,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 12:09:23,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:23,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:23,523 INFO L175 Difference]: Start difference. First operand has 50 places, 82 transitions, 519 flow. Second operand 5 states and 184 transitions. [2023-11-17 12:09:23,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 151 transitions, 1143 flow [2023-11-17 12:09:23,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 151 transitions, 1115 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-17 12:09:23,570 INFO L231 Difference]: Finished difference. Result has 55 places, 105 transitions, 852 flow [2023-11-17 12:09:23,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=852, PETRI_PLACES=55, PETRI_TRANSITIONS=105} [2023-11-17 12:09:23,571 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-11-17 12:09:23,571 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 105 transitions, 852 flow [2023-11-17 12:09:23,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:09:23,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:23,571 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:23,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:09:23,572 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 3 more)] === [2023-11-17 12:09:23,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1649461740, now seen corresponding path program 5 times [2023-11-17 12:09:23,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:23,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238194960] [2023-11-17 12:09:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:23,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:23,686 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 12:09:23,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:23,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238194960] [2023-11-17 12:09:23,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238194960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:23,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:23,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:23,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132766] [2023-11-17 12:09:23,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:23,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:23,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:23,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:23,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:23,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 105 transitions, 852 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:09:23,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:23,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:23,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:24,929 INFO L124 PetriNetUnfolderBase]: 7498/10877 cut-off events. [2023-11-17 12:09:24,929 INFO L125 PetriNetUnfolderBase]: For 32187/32187 co-relation queries the response was YES. [2023-11-17 12:09:24,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48610 conditions, 10877 events. 7498/10877 cut-off events. For 32187/32187 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 61982 event pairs, 1357 based on Foata normal form. 350/11227 useless extension candidates. Maximal degree in co-relation 17267. Up to 4493 conditions per place. [2023-11-17 12:09:25,042 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 85 selfloop transitions, 101 changer transitions 0/186 dead transitions. [2023-11-17 12:09:25,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 186 transitions, 1728 flow [2023-11-17 12:09:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2023-11-17 12:09:25,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465 [2023-11-17 12:09:25,044 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 186 transitions. [2023-11-17 12:09:25,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 186 transitions. [2023-11-17 12:09:25,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:25,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 186 transitions. [2023-11-17 12:09:25,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 12:09:25,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:25,046 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:25,046 INFO L175 Difference]: Start difference. First operand has 55 places, 105 transitions, 852 flow. Second operand 5 states and 186 transitions. [2023-11-17 12:09:25,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 186 transitions, 1728 flow [2023-11-17 12:09:25,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 186 transitions, 1618 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:25,078 INFO L231 Difference]: Finished difference. Result has 58 places, 139 transitions, 1369 flow [2023-11-17 12:09:25,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1369, PETRI_PLACES=58, PETRI_TRANSITIONS=139} [2023-11-17 12:09:25,080 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2023-11-17 12:09:25,080 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 139 transitions, 1369 flow [2023-11-17 12:09:25,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:09:25,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:25,081 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:25,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:09:25,081 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 3 more)] === [2023-11-17 12:09:25,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1844677036, now seen corresponding path program 6 times [2023-11-17 12:09:25,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:25,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331394729] [2023-11-17 12:09:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:25,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:25,197 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 12:09:25,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331394729] [2023-11-17 12:09:25,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331394729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:25,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:25,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:25,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516063025] [2023-11-17 12:09:25,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:25,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:09:25,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:25,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:09:25,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:09:25,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:25,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 139 transitions, 1369 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:09:25,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:25,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:25,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:26,570 INFO L124 PetriNetUnfolderBase]: 7861/11570 cut-off events. [2023-11-17 12:09:26,570 INFO L125 PetriNetUnfolderBase]: For 46245/46245 co-relation queries the response was YES. [2023-11-17 12:09:26,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55525 conditions, 11570 events. 7861/11570 cut-off events. For 46245/46245 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 69068 event pairs, 1214 based on Foata normal form. 432/12002 useless extension candidates. Maximal degree in co-relation 20992. Up to 4649 conditions per place. [2023-11-17 12:09:26,670 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 85 selfloop transitions, 147 changer transitions 2/234 dead transitions. [2023-11-17 12:09:26,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 234 transitions, 2566 flow [2023-11-17 12:09:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:09:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:09:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2023-11-17 12:09:26,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2023-11-17 12:09:26,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 188 transitions. [2023-11-17 12:09:26,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 188 transitions. [2023-11-17 12:09:26,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:26,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 188 transitions. [2023-11-17 12:09:26,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 12:09:26,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:26,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:09:26,674 INFO L175 Difference]: Start difference. First operand has 58 places, 139 transitions, 1369 flow. Second operand 5 states and 188 transitions. [2023-11-17 12:09:26,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 234 transitions, 2566 flow [2023-11-17 12:09:26,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 234 transitions, 2410 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:26,714 INFO L231 Difference]: Finished difference. Result has 61 places, 186 transitions, 2186 flow [2023-11-17 12:09:26,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2186, PETRI_PLACES=61, PETRI_TRANSITIONS=186} [2023-11-17 12:09:26,716 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2023-11-17 12:09:26,716 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 186 transitions, 2186 flow [2023-11-17 12:09:26,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:09:26,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:26,717 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:26,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:09:26,717 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 3 more)] === [2023-11-17 12:09:26,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1339844276, now seen corresponding path program 7 times [2023-11-17 12:09:26,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:26,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563459687] [2023-11-17 12:09:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:26,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:26,896 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 12:09:26,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:26,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563459687] [2023-11-17 12:09:26,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563459687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:26,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:26,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:09:26,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369694123] [2023-11-17 12:09:26,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:26,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:09:26,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:26,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:09:26,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:09:26,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:26,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 186 transitions, 2186 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 12:09:26,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:26,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:26,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:28,101 INFO L124 PetriNetUnfolderBase]: 7457/11498 cut-off events. [2023-11-17 12:09:28,102 INFO L125 PetriNetUnfolderBase]: For 38339/38339 co-relation queries the response was YES. [2023-11-17 12:09:28,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54249 conditions, 11498 events. 7457/11498 cut-off events. For 38339/38339 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 73054 event pairs, 496 based on Foata normal form. 408/11906 useless extension candidates. Maximal degree in co-relation 31117. Up to 4063 conditions per place. [2023-11-17 12:09:28,190 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 102 selfloop transitions, 222 changer transitions 7/331 dead transitions. [2023-11-17 12:09:28,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 331 transitions, 3887 flow [2023-11-17 12:09:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:09:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:09:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2023-11-17 12:09:28,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-11-17 12:09:28,192 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 228 transitions. [2023-11-17 12:09:28,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 228 transitions. [2023-11-17 12:09:28,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:28,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 228 transitions. [2023-11-17 12:09:28,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 12:09:28,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 12:09:28,194 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 12:09:28,194 INFO L175 Difference]: Start difference. First operand has 61 places, 186 transitions, 2186 flow. Second operand 6 states and 228 transitions. [2023-11-17 12:09:28,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 331 transitions, 3887 flow [2023-11-17 12:09:28,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 331 transitions, 3700 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:28,236 INFO L231 Difference]: Finished difference. Result has 67 places, 261 transitions, 3616 flow [2023-11-17 12:09:28,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3616, PETRI_PLACES=67, PETRI_TRANSITIONS=261} [2023-11-17 12:09:28,237 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2023-11-17 12:09:28,237 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 261 transitions, 3616 flow [2023-11-17 12:09:28,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 12:09:28,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:28,238 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:28,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:09:28,238 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 3 more)] === [2023-11-17 12:09:28,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1976407894, now seen corresponding path program 8 times [2023-11-17 12:09:28,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:28,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328150198] [2023-11-17 12:09:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:28,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:28,418 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 12:09:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328150198] [2023-11-17 12:09:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328150198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:28,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:28,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:09:28,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455558717] [2023-11-17 12:09:28,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:28,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:09:28,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:28,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:09:28,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:09:28,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:28,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 261 transitions, 3616 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 12:09:28,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:28,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:28,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:29,826 INFO L124 PetriNetUnfolderBase]: 6927/10700 cut-off events. [2023-11-17 12:09:29,827 INFO L125 PetriNetUnfolderBase]: For 56535/56535 co-relation queries the response was YES. [2023-11-17 12:09:29,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61806 conditions, 10700 events. 6927/10700 cut-off events. For 56535/56535 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 67598 event pairs, 434 based on Foata normal form. 324/11024 useless extension candidates. Maximal degree in co-relation 37124. Up to 4105 conditions per place. [2023-11-17 12:09:29,879 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 103 selfloop transitions, 261 changer transitions 0/364 dead transitions. [2023-11-17 12:09:29,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 364 transitions, 5212 flow [2023-11-17 12:09:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:09:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:09:29,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2023-11-17 12:09:29,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47291666666666665 [2023-11-17 12:09:29,881 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 227 transitions. [2023-11-17 12:09:29,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 227 transitions. [2023-11-17 12:09:29,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:29,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 227 transitions. [2023-11-17 12:09:29,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 12:09:29,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 12:09:29,883 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 12:09:29,884 INFO L175 Difference]: Start difference. First operand has 67 places, 261 transitions, 3616 flow. Second operand 6 states and 227 transitions. [2023-11-17 12:09:29,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 364 transitions, 5212 flow [2023-11-17 12:09:30,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 364 transitions, 4944 flow, removed 134 selfloop flow, removed 1 redundant places. [2023-11-17 12:09:30,093 INFO L231 Difference]: Finished difference. Result has 71 places, 300 transitions, 4622 flow [2023-11-17 12:09:30,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=3372, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4622, PETRI_PLACES=71, PETRI_TRANSITIONS=300} [2023-11-17 12:09:30,096 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 23 predicate places. [2023-11-17 12:09:30,097 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 300 transitions, 4622 flow [2023-11-17 12:09:30,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 12:09:30,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:30,097 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:30,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:09:30,098 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 3 more)] === [2023-11-17 12:09:30,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash 490413886, now seen corresponding path program 9 times [2023-11-17 12:09:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752959411] [2023-11-17 12:09:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:30,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:30,272 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 12:09:30,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:30,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752959411] [2023-11-17 12:09:30,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752959411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:30,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:09:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327214033] [2023-11-17 12:09:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:30,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:09:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:09:30,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:09:30,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:30,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 300 transitions, 4622 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:30,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:30,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:30,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:31,713 INFO L124 PetriNetUnfolderBase]: 7439/11572 cut-off events. [2023-11-17 12:09:31,713 INFO L125 PetriNetUnfolderBase]: For 66051/66051 co-relation queries the response was YES. [2023-11-17 12:09:31,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73566 conditions, 11572 events. 7439/11572 cut-off events. For 66051/66051 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 75165 event pairs, 506 based on Foata normal form. 258/11830 useless extension candidates. Maximal degree in co-relation 18530. Up to 4087 conditions per place. [2023-11-17 12:09:31,791 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 117 selfloop transitions, 343 changer transitions 6/466 dead transitions. [2023-11-17 12:09:31,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 466 transitions, 7376 flow [2023-11-17 12:09:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:09:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:09:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 288 transitions. [2023-11-17 12:09:31,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-11-17 12:09:31,793 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 288 transitions. [2023-11-17 12:09:31,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 288 transitions. [2023-11-17 12:09:31,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:31,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 288 transitions. [2023-11-17 12:09:31,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 0 states have call successors, (0), 0 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 12:09:31,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:31,795 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:31,796 INFO L175 Difference]: Start difference. First operand has 71 places, 300 transitions, 4622 flow. Second operand 8 states and 288 transitions. [2023-11-17 12:09:31,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 466 transitions, 7376 flow [2023-11-17 12:09:31,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 466 transitions, 6976 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 12:09:31,873 INFO L231 Difference]: Finished difference. Result has 75 places, 382 transitions, 6371 flow [2023-11-17 12:09:31,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=4318, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6371, PETRI_PLACES=75, PETRI_TRANSITIONS=382} [2023-11-17 12:09:31,874 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2023-11-17 12:09:31,874 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 382 transitions, 6371 flow [2023-11-17 12:09:31,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:31,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:31,875 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:31,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 12:09:31,875 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 3 more)] === [2023-11-17 12:09:31,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:31,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1514767998, now seen corresponding path program 10 times [2023-11-17 12:09:31,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:31,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630133630] [2023-11-17 12:09:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:31,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:32,036 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 12:09:32,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:32,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630133630] [2023-11-17 12:09:32,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630133630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:32,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:32,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:09:32,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659809437] [2023-11-17 12:09:32,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:32,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:09:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:32,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:09:32,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:09:32,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:32,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 382 transitions, 6371 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:32,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:32,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:32,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:33,918 INFO L124 PetriNetUnfolderBase]: 7689/12262 cut-off events. [2023-11-17 12:09:33,919 INFO L125 PetriNetUnfolderBase]: For 78206/78206 co-relation queries the response was YES. [2023-11-17 12:09:33,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78777 conditions, 12262 events. 7689/12262 cut-off events. For 78206/78206 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 84291 event pairs, 511 based on Foata normal form. 652/12914 useless extension candidates. Maximal degree in co-relation 21895. Up to 4337 conditions per place. [2023-11-17 12:09:33,994 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 122 selfloop transitions, 443 changer transitions 10/575 dead transitions. [2023-11-17 12:09:33,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 575 transitions, 9826 flow [2023-11-17 12:09:33,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:09:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:09:33,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 295 transitions. [2023-11-17 12:09:33,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2023-11-17 12:09:33,997 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 295 transitions. [2023-11-17 12:09:33,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 295 transitions. [2023-11-17 12:09:33,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:33,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 295 transitions. [2023-11-17 12:09:33,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 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 12:09:34,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:34,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:34,000 INFO L175 Difference]: Start difference. First operand has 75 places, 382 transitions, 6371 flow. Second operand 8 states and 295 transitions. [2023-11-17 12:09:34,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 575 transitions, 9826 flow [2023-11-17 12:09:34,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 575 transitions, 9300 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 12:09:34,088 INFO L231 Difference]: Finished difference. Result has 80 places, 483 transitions, 8790 flow [2023-11-17 12:09:34,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=5831, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8790, PETRI_PLACES=80, PETRI_TRANSITIONS=483} [2023-11-17 12:09:34,089 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 32 predicate places. [2023-11-17 12:09:34,089 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 483 transitions, 8790 flow [2023-11-17 12:09:34,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:34,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:34,089 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:34,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 12:09:34,089 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 3 more)] === [2023-11-17 12:09:34,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1325740162, now seen corresponding path program 11 times [2023-11-17 12:09:34,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:34,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315783102] [2023-11-17 12:09:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:34,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:34,237 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 12:09:34,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:34,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315783102] [2023-11-17 12:09:34,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315783102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:34,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:34,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:09:34,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109554894] [2023-11-17 12:09:34,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:34,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:09:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:09:34,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:09:34,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:34,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 483 transitions, 8790 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:34,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:34,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:34,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:36,388 INFO L124 PetriNetUnfolderBase]: 7513/12350 cut-off events. [2023-11-17 12:09:36,388 INFO L125 PetriNetUnfolderBase]: For 88807/88807 co-relation queries the response was YES. [2023-11-17 12:09:36,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81479 conditions, 12350 events. 7513/12350 cut-off events. For 88807/88807 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 89744 event pairs, 526 based on Foata normal form. 706/13056 useless extension candidates. Maximal degree in co-relation 25362. Up to 4413 conditions per place. [2023-11-17 12:09:36,483 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 117 selfloop transitions, 531 changer transitions 29/677 dead transitions. [2023-11-17 12:09:36,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 677 transitions, 12610 flow [2023-11-17 12:09:36,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:09:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:09:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 297 transitions. [2023-11-17 12:09:36,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640625 [2023-11-17 12:09:36,485 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 297 transitions. [2023-11-17 12:09:36,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 297 transitions. [2023-11-17 12:09:36,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:36,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 297 transitions. [2023-11-17 12:09:36,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.125) internal successors, (297), 8 states have internal predecessors, (297), 0 states have call successors, (0), 0 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 12:09:36,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:36,488 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:36,488 INFO L175 Difference]: Start difference. First operand has 80 places, 483 transitions, 8790 flow. Second operand 8 states and 297 transitions. [2023-11-17 12:09:36,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 677 transitions, 12610 flow [2023-11-17 12:09:36,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 677 transitions, 12506 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:36,617 INFO L231 Difference]: Finished difference. Result has 86 places, 572 transitions, 11744 flow [2023-11-17 12:09:36,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=8470, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11744, PETRI_PLACES=86, PETRI_TRANSITIONS=572} [2023-11-17 12:09:36,618 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2023-11-17 12:09:36,619 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 572 transitions, 11744 flow [2023-11-17 12:09:36,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:36,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:36,619 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:36,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 12:09:36,619 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 3 more)] === [2023-11-17 12:09:36,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1948983442, now seen corresponding path program 12 times [2023-11-17 12:09:36,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:36,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532744997] [2023-11-17 12:09:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:36,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:36,770 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 12:09:36,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:36,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532744997] [2023-11-17 12:09:36,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532744997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:36,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:36,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:09:36,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333846557] [2023-11-17 12:09:36,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:36,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:09:36,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:36,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:09:36,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:09:36,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:36,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 572 transitions, 11744 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:36,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:36,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:36,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:38,945 INFO L124 PetriNetUnfolderBase]: 6799/11408 cut-off events. [2023-11-17 12:09:38,945 INFO L125 PetriNetUnfolderBase]: For 96403/96403 co-relation queries the response was YES. [2023-11-17 12:09:38,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82913 conditions, 11408 events. 6799/11408 cut-off events. For 96403/96403 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 84602 event pairs, 433 based on Foata normal form. 368/11776 useless extension candidates. Maximal degree in co-relation 30518. Up to 4131 conditions per place. [2023-11-17 12:09:39,035 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 111 selfloop transitions, 630 changer transitions 29/770 dead transitions. [2023-11-17 12:09:39,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 770 transitions, 16458 flow [2023-11-17 12:09:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:09:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:09:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 285 transitions. [2023-11-17 12:09:39,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2023-11-17 12:09:39,038 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 285 transitions. [2023-11-17 12:09:39,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 285 transitions. [2023-11-17 12:09:39,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:39,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 285 transitions. [2023-11-17 12:09:39,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.625) internal successors, (285), 8 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 12:09:39,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:39,041 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:39,041 INFO L175 Difference]: Start difference. First operand has 86 places, 572 transitions, 11744 flow. Second operand 8 states and 285 transitions. [2023-11-17 12:09:39,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 770 transitions, 16458 flow [2023-11-17 12:09:39,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 770 transitions, 16332 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:39,217 INFO L231 Difference]: Finished difference. Result has 93 places, 672 transitions, 15637 flow [2023-11-17 12:09:39,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=10981, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15637, PETRI_PLACES=93, PETRI_TRANSITIONS=672} [2023-11-17 12:09:39,218 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 45 predicate places. [2023-11-17 12:09:39,218 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 672 transitions, 15637 flow [2023-11-17 12:09:39,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:39,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:39,218 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:39,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 12:09:39,218 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 3 more)] === [2023-11-17 12:09:39,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash -993102920, now seen corresponding path program 13 times [2023-11-17 12:09:39,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:39,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112178902] [2023-11-17 12:09:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:39,370 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 12:09:39,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112178902] [2023-11-17 12:09:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112178902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:39,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:39,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:09:39,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482126573] [2023-11-17 12:09:39,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:39,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:09:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:39,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:09:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:09:39,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:39,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 672 transitions, 15637 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:39,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:39,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:39,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:41,985 INFO L124 PetriNetUnfolderBase]: 7062/12017 cut-off events. [2023-11-17 12:09:41,986 INFO L125 PetriNetUnfolderBase]: For 114306/114306 co-relation queries the response was YES. [2023-11-17 12:09:42,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91936 conditions, 12017 events. 7062/12017 cut-off events. For 114306/114306 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 90115 event pairs, 186 based on Foata normal form. 98/12115 useless extension candidates. Maximal degree in co-relation 44930. Up to 4231 conditions per place. [2023-11-17 12:09:42,078 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 95 selfloop transitions, 747 changer transitions 26/868 dead transitions. [2023-11-17 12:09:42,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 868 transitions, 19777 flow [2023-11-17 12:09:42,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:09:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:09:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2023-11-17 12:09:42,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2023-11-17 12:09:42,080 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 286 transitions. [2023-11-17 12:09:42,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 286 transitions. [2023-11-17 12:09:42,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:42,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 286 transitions. [2023-11-17 12:09:42,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 12:09:42,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:42,081 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:09:42,081 INFO L175 Difference]: Start difference. First operand has 93 places, 672 transitions, 15637 flow. Second operand 8 states and 286 transitions. [2023-11-17 12:09:42,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 868 transitions, 19777 flow [2023-11-17 12:09:42,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 868 transitions, 19494 flow, removed 76 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:42,476 INFO L231 Difference]: Finished difference. Result has 100 places, 781 transitions, 19273 flow [2023-11-17 12:09:42,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=15376, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=647, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19273, PETRI_PLACES=100, PETRI_TRANSITIONS=781} [2023-11-17 12:09:42,477 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2023-11-17 12:09:42,477 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 781 transitions, 19273 flow [2023-11-17 12:09:42,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:09:42,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:42,478 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:42,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 12:09:42,478 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 3 more)] === [2023-11-17 12:09:42,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash -993924192, now seen corresponding path program 14 times [2023-11-17 12:09:42,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:42,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527789228] [2023-11-17 12:09:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:42,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:42,656 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 12:09:42,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:42,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527789228] [2023-11-17 12:09:42,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527789228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:42,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:42,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 12:09:42,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826225896] [2023-11-17 12:09:42,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:42,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:09:42,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:42,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:09:42,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:09:42,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:42,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 781 transitions, 19273 flow. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:09:42,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:42,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:42,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:45,992 INFO L124 PetriNetUnfolderBase]: 7190/12485 cut-off events. [2023-11-17 12:09:45,992 INFO L125 PetriNetUnfolderBase]: For 143068/143068 co-relation queries the response was YES. [2023-11-17 12:09:46,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103971 conditions, 12485 events. 7190/12485 cut-off events. For 143068/143068 co-relation queries the response was YES. Maximal size of possible extension queue 1023. Compared 96867 event pairs, 204 based on Foata normal form. 192/12677 useless extension candidates. Maximal degree in co-relation 60179. Up to 4387 conditions per place. [2023-11-17 12:09:46,084 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 117 selfloop transitions, 868 changer transitions 24/1009 dead transitions. [2023-11-17 12:09:46,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 1009 transitions, 25188 flow [2023-11-17 12:09:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:09:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:09:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 399 transitions. [2023-11-17 12:09:46,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2023-11-17 12:09:46,086 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 399 transitions. [2023-11-17 12:09:46,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 399 transitions. [2023-11-17 12:09:46,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:46,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 399 transitions. [2023-11-17 12:09:46,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 33.25) internal successors, (399), 12 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 12:09:46,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 12:09:46,089 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 12:09:46,089 INFO L175 Difference]: Start difference. First operand has 100 places, 781 transitions, 19273 flow. Second operand 12 states and 399 transitions. [2023-11-17 12:09:46,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 1009 transitions, 25188 flow [2023-11-17 12:09:46,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 1009 transitions, 23416 flow, removed 52 selfloop flow, removed 4 redundant places. [2023-11-17 12:09:46,622 INFO L231 Difference]: Finished difference. Result has 107 places, 902 transitions, 22138 flow [2023-11-17 12:09:46,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=17707, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=743, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=22138, PETRI_PLACES=107, PETRI_TRANSITIONS=902} [2023-11-17 12:09:46,623 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 59 predicate places. [2023-11-17 12:09:46,623 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 902 transitions, 22138 flow [2023-11-17 12:09:46,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:09:46,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:46,624 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:46,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 12:09:46,624 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 3 more)] === [2023-11-17 12:09:46,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:46,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1259871260, now seen corresponding path program 15 times [2023-11-17 12:09:46,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:46,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928922837] [2023-11-17 12:09:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:46,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:46,789 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 12:09:46,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:46,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928922837] [2023-11-17 12:09:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928922837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:46,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:46,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 12:09:46,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199873583] [2023-11-17 12:09:46,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:46,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:09:46,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:46,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:09:46,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:09:46,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:46,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 902 transitions, 22138 flow. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:09:46,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:46,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:46,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:49,877 INFO L124 PetriNetUnfolderBase]: 7572/13313 cut-off events. [2023-11-17 12:09:49,878 INFO L125 PetriNetUnfolderBase]: For 144800/144800 co-relation queries the response was YES. [2023-11-17 12:09:49,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111655 conditions, 13313 events. 7572/13313 cut-off events. For 144800/144800 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 106464 event pairs, 210 based on Foata normal form. 248/13561 useless extension candidates. Maximal degree in co-relation 59426. Up to 4561 conditions per place. [2023-11-17 12:09:49,967 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 115 selfloop transitions, 889 changer transitions 181/1185 dead transitions. [2023-11-17 12:09:49,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 1185 transitions, 29813 flow [2023-11-17 12:09:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:09:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:09:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 398 transitions. [2023-11-17 12:09:49,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41458333333333336 [2023-11-17 12:09:49,969 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 398 transitions. [2023-11-17 12:09:49,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 398 transitions. [2023-11-17 12:09:49,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:49,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 398 transitions. [2023-11-17 12:09:49,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 33.166666666666664) internal successors, (398), 12 states have internal predecessors, (398), 0 states have call successors, (0), 0 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 12:09:49,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 12:09:49,972 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 12:09:49,972 INFO L175 Difference]: Start difference. First operand has 107 places, 902 transitions, 22138 flow. Second operand 12 states and 398 transitions. [2023-11-17 12:09:49,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 1185 transitions, 29813 flow [2023-11-17 12:09:50,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 1185 transitions, 29391 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-17 12:09:50,372 INFO L231 Difference]: Finished difference. Result has 118 places, 923 transitions, 23898 flow [2023-11-17 12:09:50,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=21684, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=751, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=23898, PETRI_PLACES=118, PETRI_TRANSITIONS=923} [2023-11-17 12:09:50,373 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 70 predicate places. [2023-11-17 12:09:50,373 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 923 transitions, 23898 flow [2023-11-17 12:09:50,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:09:50,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:50,374 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:50,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 12:09:50,374 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 3 more)] === [2023-11-17 12:09:50,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash -502058208, now seen corresponding path program 16 times [2023-11-17 12:09:50,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:50,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776993629] [2023-11-17 12:09:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:50,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:50,513 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 12:09:50,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:50,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776993629] [2023-11-17 12:09:50,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776993629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:50,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:50,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 12:09:50,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807888534] [2023-11-17 12:09:50,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:50,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:09:50,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:09:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:09:50,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:50,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 923 transitions, 23898 flow. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:09:50,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:50,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:50,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:54,046 INFO L124 PetriNetUnfolderBase]: 7073/12898 cut-off events. [2023-11-17 12:09:54,046 INFO L125 PetriNetUnfolderBase]: For 156803/156803 co-relation queries the response was YES. [2023-11-17 12:09:54,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113746 conditions, 12898 events. 7073/12898 cut-off events. For 156803/156803 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 107538 event pairs, 229 based on Foata normal form. 302/13200 useless extension candidates. Maximal degree in co-relation 71275. Up to 4421 conditions per place. [2023-11-17 12:09:54,139 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 129 selfloop transitions, 930 changer transitions 83/1142 dead transitions. [2023-11-17 12:09:54,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 1142 transitions, 29636 flow [2023-11-17 12:09:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:09:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:09:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 411 transitions. [2023-11-17 12:09:54,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2023-11-17 12:09:54,141 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 411 transitions. [2023-11-17 12:09:54,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 411 transitions. [2023-11-17 12:09:54,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:54,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 411 transitions. [2023-11-17 12:09:54,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 34.25) internal successors, (411), 12 states have internal predecessors, (411), 0 states have call successors, (0), 0 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 12:09:54,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 12:09:54,144 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 12:09:54,144 INFO L175 Difference]: Start difference. First operand has 118 places, 923 transitions, 23898 flow. Second operand 12 states and 411 transitions. [2023-11-17 12:09:54,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 1142 transitions, 29636 flow [2023-11-17 12:09:54,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 1142 transitions, 29405 flow, removed 70 selfloop flow, removed 2 redundant places. [2023-11-17 12:09:54,900 INFO L231 Difference]: Finished difference. Result has 127 places, 964 transitions, 26055 flow [2023-11-17 12:09:54,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=23467, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=913, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=815, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26055, PETRI_PLACES=127, PETRI_TRANSITIONS=964} [2023-11-17 12:09:54,901 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 79 predicate places. [2023-11-17 12:09:54,901 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 964 transitions, 26055 flow [2023-11-17 12:09:54,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:09:54,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:54,901 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:54,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 12:09:54,902 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 3 more)] === [2023-11-17 12:09:54,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash 387947186, now seen corresponding path program 17 times [2023-11-17 12:09:54,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:54,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135642553] [2023-11-17 12:09:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:55,085 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 12:09:55,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:55,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135642553] [2023-11-17 12:09:55,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135642553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:55,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:55,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 12:09:55,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538850499] [2023-11-17 12:09:55,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:55,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:09:55,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:55,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:09:55,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:09:55,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:55,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 964 transitions, 26055 flow. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:09:55,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:55,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:55,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:58,462 INFO L124 PetriNetUnfolderBase]: 6620/12333 cut-off events. [2023-11-17 12:09:58,462 INFO L125 PetriNetUnfolderBase]: For 160758/160758 co-relation queries the response was YES. [2023-11-17 12:09:58,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113215 conditions, 12333 events. 6620/12333 cut-off events. For 160758/160758 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 104998 event pairs, 213 based on Foata normal form. 306/12639 useless extension candidates. Maximal degree in co-relation 68758. Up to 4197 conditions per place. [2023-11-17 12:09:58,563 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 125 selfloop transitions, 913 changer transitions 119/1157 dead transitions. [2023-11-17 12:09:58,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 1157 transitions, 31303 flow [2023-11-17 12:09:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:09:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:09:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 411 transitions. [2023-11-17 12:09:58,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2023-11-17 12:09:58,565 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 411 transitions. [2023-11-17 12:09:58,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 411 transitions. [2023-11-17 12:09:58,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:58,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 411 transitions. [2023-11-17 12:09:58,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 34.25) internal successors, (411), 12 states have internal predecessors, (411), 0 states have call successors, (0), 0 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 12:09:58,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 12:09:58,568 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 12:09:58,568 INFO L175 Difference]: Start difference. First operand has 127 places, 964 transitions, 26055 flow. Second operand 12 states and 411 transitions. [2023-11-17 12:09:58,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 1157 transitions, 31303 flow [2023-11-17 12:09:59,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 1157 transitions, 30898 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-17 12:09:59,473 INFO L231 Difference]: Finished difference. Result has 135 places, 945 transitions, 26402 flow [2023-11-17 12:09:59,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25422, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=828, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26402, PETRI_PLACES=135, PETRI_TRANSITIONS=945} [2023-11-17 12:09:59,474 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 87 predicate places. [2023-11-17 12:09:59,474 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 945 transitions, 26402 flow [2023-11-17 12:09:59,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:09:59,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:59,475 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:59,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 12:09:59,475 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 3 more)] === [2023-11-17 12:09:59,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:59,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1848532550, now seen corresponding path program 18 times [2023-11-17 12:09:59,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:59,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321506594] [2023-11-17 12:09:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:59,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:59,635 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 12:09:59,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321506594] [2023-11-17 12:09:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321506594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:59,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:59,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 12:09:59,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425207244] [2023-11-17 12:09:59,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:59,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 12:09:59,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:59,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 12:09:59,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:09:59,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:09:59,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 945 transitions, 26402 flow. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 12:09:59,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:59,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:09:59,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:02,303 INFO L124 PetriNetUnfolderBase]: 5300/9837 cut-off events. [2023-11-17 12:10:02,303 INFO L125 PetriNetUnfolderBase]: For 134217/134217 co-relation queries the response was YES. [2023-11-17 12:10:02,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90840 conditions, 9837 events. 5300/9837 cut-off events. For 134217/134217 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 79353 event pairs, 68 based on Foata normal form. 20/9857 useless extension candidates. Maximal degree in co-relation 48128. Up to 3263 conditions per place. [2023-11-17 12:10:02,382 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 89 selfloop transitions, 1008 changer transitions 6/1103 dead transitions. [2023-11-17 12:10:02,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 1103 transitions, 31045 flow [2023-11-17 12:10:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 12:10:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 12:10:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2023-11-17 12:10:02,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2023-11-17 12:10:02,383 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 326 transitions. [2023-11-17 12:10:02,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 326 transitions. [2023-11-17 12:10:02,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:02,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 326 transitions. [2023-11-17 12:10:02,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 12:10:02,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 12:10:02,386 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 12:10:02,386 INFO L175 Difference]: Start difference. First operand has 135 places, 945 transitions, 26402 flow. Second operand 10 states and 326 transitions. [2023-11-17 12:10:02,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 1103 transitions, 31045 flow [2023-11-17 12:10:02,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 1103 transitions, 30907 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-17 12:10:02,875 INFO L231 Difference]: Finished difference. Result has 144 places, 1033 transitions, 31141 flow [2023-11-17 12:10:02,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26281, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=920, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31141, PETRI_PLACES=144, PETRI_TRANSITIONS=1033} [2023-11-17 12:10:02,877 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 96 predicate places. [2023-11-17 12:10:02,877 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 1033 transitions, 31141 flow [2023-11-17 12:10:02,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 12:10:02,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:02,878 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:02,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 12:10:02,878 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 3 more)] === [2023-11-17 12:10:02,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1259955484, now seen corresponding path program 19 times [2023-11-17 12:10:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247848867] [2023-11-17 12:10:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:03,270 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 12:10:03,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:03,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247848867] [2023-11-17 12:10:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247848867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:03,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:03,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 12:10:03,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677440107] [2023-11-17 12:10:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:03,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:10:03,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:03,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:10:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-17 12:10:03,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:10:03,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 1033 transitions, 31141 flow. Second operand has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:03,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:03,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:10:03,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:06,188 INFO L124 PetriNetUnfolderBase]: 5403/10094 cut-off events. [2023-11-17 12:10:06,188 INFO L125 PetriNetUnfolderBase]: For 154246/154246 co-relation queries the response was YES. [2023-11-17 12:10:06,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100218 conditions, 10094 events. 5403/10094 cut-off events. For 154246/154246 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 82452 event pairs, 68 based on Foata normal form. 40/10134 useless extension candidates. Maximal degree in co-relation 64732. Up to 3327 conditions per place. [2023-11-17 12:10:06,281 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 115 selfloop transitions, 1031 changer transitions 47/1193 dead transitions. [2023-11-17 12:10:06,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 1193 transitions, 35743 flow [2023-11-17 12:10:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 12:10:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 12:10:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 501 transitions. [2023-11-17 12:10:06,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3683823529411765 [2023-11-17 12:10:06,283 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 501 transitions. [2023-11-17 12:10:06,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 501 transitions. [2023-11-17 12:10:06,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:06,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 501 transitions. [2023-11-17 12:10:06,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 29.470588235294116) internal successors, (501), 17 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 12:10:06,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:06,286 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:06,287 INFO L175 Difference]: Start difference. First operand has 144 places, 1033 transitions, 31141 flow. Second operand 17 states and 501 transitions. [2023-11-17 12:10:06,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 1193 transitions, 35743 flow [2023-11-17 12:10:06,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 1193 transitions, 35694 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-11-17 12:10:07,012 INFO L231 Difference]: Finished difference. Result has 159 places, 1056 transitions, 33426 flow [2023-11-17 12:10:07,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=31114, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1033, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=987, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=33426, PETRI_PLACES=159, PETRI_TRANSITIONS=1056} [2023-11-17 12:10:07,013 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 111 predicate places. [2023-11-17 12:10:07,013 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 1056 transitions, 33426 flow [2023-11-17 12:10:07,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:07,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:07,014 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:07,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 12:10:07,014 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 3 more)] === [2023-11-17 12:10:07,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:07,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1509006992, now seen corresponding path program 20 times [2023-11-17 12:10:07,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:07,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233351551] [2023-11-17 12:10:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:07,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:07,170 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 12:10:07,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:07,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233351551] [2023-11-17 12:10:07,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233351551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:07,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:07,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 12:10:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139572915] [2023-11-17 12:10:07,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:07,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:10:07,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:07,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:10:07,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-17 12:10:07,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:10:07,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 1056 transitions, 33426 flow. Second operand has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:07,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:07,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:10:07,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:10,388 INFO L124 PetriNetUnfolderBase]: 5400/10167 cut-off events. [2023-11-17 12:10:10,389 INFO L125 PetriNetUnfolderBase]: For 169632/169632 co-relation queries the response was YES. [2023-11-17 12:10:10,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106254 conditions, 10167 events. 5400/10167 cut-off events. For 169632/169632 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 84069 event pairs, 68 based on Foata normal form. 24/10191 useless extension candidates. Maximal degree in co-relation 68456. Up to 3367 conditions per place. [2023-11-17 12:10:10,467 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 96 selfloop transitions, 930 changer transitions 208/1234 dead transitions. [2023-11-17 12:10:10,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1234 transitions, 38780 flow [2023-11-17 12:10:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 12:10:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 12:10:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 495 transitions. [2023-11-17 12:10:10,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639705882352941 [2023-11-17 12:10:10,469 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 495 transitions. [2023-11-17 12:10:10,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 495 transitions. [2023-11-17 12:10:10,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:10,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 495 transitions. [2023-11-17 12:10:10,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 29.11764705882353) internal successors, (495), 17 states have internal predecessors, (495), 0 states have call successors, (0), 0 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 12:10:10,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:10,471 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:10,471 INFO L175 Difference]: Start difference. First operand has 159 places, 1056 transitions, 33426 flow. Second operand 17 states and 495 transitions. [2023-11-17 12:10:10,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 1234 transitions, 38780 flow [2023-11-17 12:10:11,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 1234 transitions, 38418 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-17 12:10:11,281 INFO L231 Difference]: Finished difference. Result has 174 places, 955 transitions, 31354 flow [2023-11-17 12:10:11,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=33076, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=921, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=31354, PETRI_PLACES=174, PETRI_TRANSITIONS=955} [2023-11-17 12:10:11,283 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 126 predicate places. [2023-11-17 12:10:11,283 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 955 transitions, 31354 flow [2023-11-17 12:10:11,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:11,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:11,283 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:11,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 12:10:11,284 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 3 more)] === [2023-11-17 12:10:11,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash 11038364, now seen corresponding path program 21 times [2023-11-17 12:10:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:11,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329565578] [2023-11-17 12:10:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:11,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:11,442 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 12:10:11,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:11,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329565578] [2023-11-17 12:10:11,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329565578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:11,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:11,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 12:10:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845872666] [2023-11-17 12:10:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:11,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:10:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:10:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-17 12:10:11,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:10:11,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 955 transitions, 31354 flow. Second operand has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:11,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:11,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:10:11,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:14,300 INFO L124 PetriNetUnfolderBase]: 4912/9339 cut-off events. [2023-11-17 12:10:14,300 INFO L125 PetriNetUnfolderBase]: For 177155/177155 co-relation queries the response was YES. [2023-11-17 12:10:14,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102040 conditions, 9339 events. 4912/9339 cut-off events. For 177155/177155 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 76385 event pairs, 67 based on Foata normal form. 60/9399 useless extension candidates. Maximal degree in co-relation 68302. Up to 3039 conditions per place. [2023-11-17 12:10:14,559 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 123 selfloop transitions, 946 changer transitions 50/1119 dead transitions. [2023-11-17 12:10:14,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 1119 transitions, 35880 flow [2023-11-17 12:10:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 12:10:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 12:10:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 509 transitions. [2023-11-17 12:10:14,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37426470588235294 [2023-11-17 12:10:14,561 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 509 transitions. [2023-11-17 12:10:14,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 509 transitions. [2023-11-17 12:10:14,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:14,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 509 transitions. [2023-11-17 12:10:14,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 29.941176470588236) internal successors, (509), 17 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 12:10:14,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:14,564 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:14,564 INFO L175 Difference]: Start difference. First operand has 174 places, 955 transitions, 31354 flow. Second operand 17 states and 509 transitions. [2023-11-17 12:10:14,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 1119 transitions, 35880 flow [2023-11-17 12:10:15,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1119 transitions, 35407 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-11-17 12:10:15,294 INFO L231 Difference]: Finished difference. Result has 180 places, 970 transitions, 32929 flow [2023-11-17 12:10:15,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=30939, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=889, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=32929, PETRI_PLACES=180, PETRI_TRANSITIONS=970} [2023-11-17 12:10:15,295 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 132 predicate places. [2023-11-17 12:10:15,295 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 970 transitions, 32929 flow [2023-11-17 12:10:15,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:15,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:15,296 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:15,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 12:10:15,296 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 3 more)] === [2023-11-17 12:10:15,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash -101629378, now seen corresponding path program 22 times [2023-11-17 12:10:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:15,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732936414] [2023-11-17 12:10:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:15,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:15,454 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 12:10:15,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732936414] [2023-11-17 12:10:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732936414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:15,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:15,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 12:10:15,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030123009] [2023-11-17 12:10:15,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:10:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:10:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-17 12:10:15,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:10:15,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 970 transitions, 32929 flow. Second operand has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:15,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:15,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:10:15,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:18,331 INFO L124 PetriNetUnfolderBase]: 4839/9226 cut-off events. [2023-11-17 12:10:18,331 INFO L125 PetriNetUnfolderBase]: For 172621/172621 co-relation queries the response was YES. [2023-11-17 12:10:18,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102425 conditions, 9226 events. 4839/9226 cut-off events. For 172621/172621 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 75426 event pairs, 67 based on Foata normal form. 54/9280 useless extension candidates. Maximal degree in co-relation 72507. Up to 2967 conditions per place. [2023-11-17 12:10:18,455 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 117 selfloop transitions, 938 changer transitions 69/1124 dead transitions. [2023-11-17 12:10:18,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 1124 transitions, 37211 flow [2023-11-17 12:10:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 12:10:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 12:10:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 511 transitions. [2023-11-17 12:10:18,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37573529411764706 [2023-11-17 12:10:18,456 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 511 transitions. [2023-11-17 12:10:18,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 511 transitions. [2023-11-17 12:10:18,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:18,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 511 transitions. [2023-11-17 12:10:18,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 30.058823529411764) internal successors, (511), 17 states have internal predecessors, (511), 0 states have call successors, (0), 0 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 12:10:18,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:18,459 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:18,459 INFO L175 Difference]: Start difference. First operand has 180 places, 970 transitions, 32929 flow. Second operand 17 states and 511 transitions. [2023-11-17 12:10:18,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 1124 transitions, 37211 flow [2023-11-17 12:10:19,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 1124 transitions, 37132 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 12:10:19,254 INFO L231 Difference]: Finished difference. Result has 194 places, 962 transitions, 34252 flow [2023-11-17 12:10:19,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=32815, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=968, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=897, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=34252, PETRI_PLACES=194, PETRI_TRANSITIONS=962} [2023-11-17 12:10:19,255 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 146 predicate places. [2023-11-17 12:10:19,255 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 962 transitions, 34252 flow [2023-11-17 12:10:19,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:19,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:19,255 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:19,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 12:10:19,256 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 3 more)] === [2023-11-17 12:10:19,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash 326988028, now seen corresponding path program 23 times [2023-11-17 12:10:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:19,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079917706] [2023-11-17 12:10:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:19,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:19,384 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 12:10:19,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:19,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079917706] [2023-11-17 12:10:19,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079917706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:19,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:19,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:10:19,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180986478] [2023-11-17 12:10:19,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:19,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:10:19,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:19,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:10:19,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:10:19,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:10:19,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 962 transitions, 34252 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:10:19,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:19,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:10:19,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:21,005 INFO L124 PetriNetUnfolderBase]: 2061/4330 cut-off events. [2023-11-17 12:10:21,006 INFO L125 PetriNetUnfolderBase]: For 133467/133467 co-relation queries the response was YES. [2023-11-17 12:10:21,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51733 conditions, 4330 events. 2061/4330 cut-off events. For 133467/133467 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 35020 event pairs, 147 based on Foata normal form. 596/4926 useless extension candidates. Maximal degree in co-relation 33539. Up to 1379 conditions per place. [2023-11-17 12:10:21,033 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 118 selfloop transitions, 300 changer transitions 213/631 dead transitions. [2023-11-17 12:10:21,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 631 transitions, 22408 flow [2023-11-17 12:10:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:10:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:10:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 260 transitions. [2023-11-17 12:10:21,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2023-11-17 12:10:21,035 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 260 transitions. [2023-11-17 12:10:21,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 260 transitions. [2023-11-17 12:10:21,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:21,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 260 transitions. [2023-11-17 12:10:21,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 12:10:21,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:10:21,037 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 12:10:21,037 INFO L175 Difference]: Start difference. First operand has 194 places, 962 transitions, 34252 flow. Second operand 8 states and 260 transitions. [2023-11-17 12:10:21,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 631 transitions, 22408 flow [2023-11-17 12:10:21,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 631 transitions, 22336 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-17 12:10:21,373 INFO L231 Difference]: Finished difference. Result has 199 places, 387 transitions, 13362 flow [2023-11-17 12:10:21,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=20149, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13362, PETRI_PLACES=199, PETRI_TRANSITIONS=387} [2023-11-17 12:10:21,374 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 151 predicate places. [2023-11-17 12:10:21,374 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 387 transitions, 13362 flow [2023-11-17 12:10:21,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:10:21,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:21,375 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:21,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 12:10:21,375 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 3 more)] === [2023-11-17 12:10:21,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:21,375 INFO L85 PathProgramCache]: Analyzing trace with hash 528310896, now seen corresponding path program 24 times [2023-11-17 12:10:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:21,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129595124] [2023-11-17 12:10:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:21,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:21,506 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 12:10:21,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:21,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129595124] [2023-11-17 12:10:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129595124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:21,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:21,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 12:10:21,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489116796] [2023-11-17 12:10:21,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:21,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 12:10:21,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 12:10:21,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:10:21,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:10:21,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 387 transitions, 13362 flow. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 12:10:21,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:21,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:10:21,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:22,056 INFO L124 PetriNetUnfolderBase]: 826/1769 cut-off events. [2023-11-17 12:10:22,056 INFO L125 PetriNetUnfolderBase]: For 45000/45000 co-relation queries the response was YES. [2023-11-17 12:10:22,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21323 conditions, 1769 events. 826/1769 cut-off events. For 45000/45000 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 11719 event pairs, 61 based on Foata normal form. 76/1845 useless extension candidates. Maximal degree in co-relation 16511. Up to 445 conditions per place. [2023-11-17 12:10:22,068 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 77 selfloop transitions, 190 changer transitions 103/370 dead transitions. [2023-11-17 12:10:22,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 370 transitions, 12696 flow [2023-11-17 12:10:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 12:10:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 12:10:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 270 transitions. [2023-11-17 12:10:22,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-11-17 12:10:22,069 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 270 transitions. [2023-11-17 12:10:22,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 270 transitions. [2023-11-17 12:10:22,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:22,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 270 transitions. [2023-11-17 12:10:22,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 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 12:10:22,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 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 12:10:22,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 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 12:10:22,071 INFO L175 Difference]: Start difference. First operand has 199 places, 387 transitions, 13362 flow. Second operand 9 states and 270 transitions. [2023-11-17 12:10:22,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 370 transitions, 12696 flow [2023-11-17 12:10:22,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 370 transitions, 12285 flow, removed 55 selfloop flow, removed 5 redundant places. [2023-11-17 12:10:22,199 INFO L231 Difference]: Finished difference. Result has 201 places, 236 transitions, 7681 flow [2023-11-17 12:10:22,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=11392, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7681, PETRI_PLACES=201, PETRI_TRANSITIONS=236} [2023-11-17 12:10:22,200 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 153 predicate places. [2023-11-17 12:10:22,200 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 236 transitions, 7681 flow [2023-11-17 12:10:22,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 12:10:22,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:22,200 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:22,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 12:10:22,200 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 3 more)] === [2023-11-17 12:10:22,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:22,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2068144310, now seen corresponding path program 25 times [2023-11-17 12:10:22,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:22,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819352130] [2023-11-17 12:10:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:22,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:22,320 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 12:10:22,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:22,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819352130] [2023-11-17 12:10:22,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819352130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:22,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:22,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 12:10:22,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895965215] [2023-11-17 12:10:22,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:22,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:10:22,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:22,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:10:22,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:10:22,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:10:22,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 236 transitions, 7681 flow. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:10:22,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:22,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:10:22,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:22,732 INFO L124 PetriNetUnfolderBase]: 376/907 cut-off events. [2023-11-17 12:10:22,732 INFO L125 PetriNetUnfolderBase]: For 26193/26193 co-relation queries the response was YES. [2023-11-17 12:10:22,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11655 conditions, 907 events. 376/907 cut-off events. For 26193/26193 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5816 event pairs, 14 based on Foata normal form. 46/953 useless extension candidates. Maximal degree in co-relation 10936. Up to 289 conditions per place. [2023-11-17 12:10:22,740 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 44 selfloop transitions, 65 changer transitions 113/222 dead transitions. [2023-11-17 12:10:22,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 222 transitions, 7459 flow [2023-11-17 12:10:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:10:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:10:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2023-11-17 12:10:22,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33181818181818185 [2023-11-17 12:10:22,742 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 292 transitions. [2023-11-17 12:10:22,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 292 transitions. [2023-11-17 12:10:22,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:22,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 292 transitions. [2023-11-17 12:10:22,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 26.545454545454547) internal successors, (292), 11 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 12:10:22,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 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 12:10:22,744 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 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 12:10:22,744 INFO L175 Difference]: Start difference. First operand has 201 places, 236 transitions, 7681 flow. Second operand 11 states and 292 transitions. [2023-11-17 12:10:22,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 222 transitions, 7459 flow [2023-11-17 12:10:22,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 222 transitions, 6336 flow, removed 9 selfloop flow, removed 26 redundant places. [2023-11-17 12:10:22,841 INFO L231 Difference]: Finished difference. Result has 182 places, 93 transitions, 2282 flow [2023-11-17 12:10:22,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=5752, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2282, PETRI_PLACES=182, PETRI_TRANSITIONS=93} [2023-11-17 12:10:22,842 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 134 predicate places. [2023-11-17 12:10:22,842 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 93 transitions, 2282 flow [2023-11-17 12:10:22,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 12:10:22,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:22,842 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:22,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 12:10:22,842 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 3 more)] === [2023-11-17 12:10:22,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:22,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2103595550, now seen corresponding path program 26 times [2023-11-17 12:10:22,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:22,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315071371] [2023-11-17 12:10:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:22,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:22,982 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 12:10:22,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:22,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315071371] [2023-11-17 12:10:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315071371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:22,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:22,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 12:10:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585226971] [2023-11-17 12:10:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:10:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:10:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-17 12:10:22,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2023-11-17 12:10:22,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 93 transitions, 2282 flow. Second operand has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:22,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:22,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2023-11-17 12:10:22,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:23,162 INFO L124 PetriNetUnfolderBase]: 113/264 cut-off events. [2023-11-17 12:10:23,162 INFO L125 PetriNetUnfolderBase]: For 5138/5138 co-relation queries the response was YES. [2023-11-17 12:10:23,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 264 events. 113/264 cut-off events. For 5138/5138 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1120 event pairs, 0 based on Foata normal form. 6/270 useless extension candidates. Maximal degree in co-relation 2950. Up to 85 conditions per place. [2023-11-17 12:10:23,163 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2023-11-17 12:10:23,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 97 transitions, 2450 flow [2023-11-17 12:10:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 12:10:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 12:10:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 309 transitions. [2023-11-17 12:10:23,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27589285714285716 [2023-11-17 12:10:23,164 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 309 transitions. [2023-11-17 12:10:23,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 309 transitions. [2023-11-17 12:10:23,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:23,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 309 transitions. [2023-11-17 12:10:23,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 22.071428571428573) internal successors, (309), 14 states have internal predecessors, (309), 0 states have call successors, (0), 0 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 12:10:23,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 80.0) internal successors, (1200), 15 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:10:23,166 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 80.0) internal successors, (1200), 15 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:10:23,166 INFO L175 Difference]: Start difference. First operand has 182 places, 93 transitions, 2282 flow. Second operand 14 states and 309 transitions. [2023-11-17 12:10:23,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 97 transitions, 2450 flow [2023-11-17 12:10:23,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 97 transitions, 1176 flow, removed 16 selfloop flow, removed 71 redundant places. [2023-11-17 12:10:23,179 INFO L231 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2023-11-17 12:10:23,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2023-11-17 12:10:23,179 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 43 predicate places. [2023-11-17 12:10:23,179 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2023-11-17 12:10:23,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 12:10:23,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 12:10:23,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-11-17 12:10:23,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 12:10:23,182 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-17 12:10:23,182 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-17 12:10:23,182 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-11-17 12:10:23,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 12:10:23,182 INFO L445 BasicCegarLoop]: Path program histogram: [26] [2023-11-17 12:10:23,184 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:10:23,184 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:10:23,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:10:23 BasicIcfg [2023-11-17 12:10:23,187 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:10:23,187 INFO L158 Benchmark]: Toolchain (without parser) took 68562.01ms. Allocated memory was 201.3MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 157.4MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-11-17 12:10:23,188 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:10:23,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.08ms. Allocated memory is still 201.3MB. Free memory was 157.4MB in the beginning and 145.1MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 12:10:23,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.72ms. Allocated memory is still 201.3MB. Free memory was 145.1MB in the beginning and 142.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:10:23,188 INFO L158 Benchmark]: Boogie Preprocessor took 35.65ms. Allocated memory is still 201.3MB. Free memory was 142.7MB in the beginning and 140.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:10:23,188 INFO L158 Benchmark]: RCFGBuilder took 813.73ms. Allocated memory is still 201.3MB. Free memory was 140.9MB in the beginning and 147.2MB in the end (delta: -6.3MB). Peak memory consumption was 29.5MB. Max. memory is 8.0GB. [2023-11-17 12:10:23,189 INFO L158 Benchmark]: TraceAbstraction took 67418.61ms. Allocated memory was 201.3MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 146.7MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-11-17 12:10:23,190 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.08ms. Allocated memory is still 201.3MB. Free memory was 157.4MB in the beginning and 145.1MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.72ms. Allocated memory is still 201.3MB. Free memory was 145.1MB in the beginning and 142.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.65ms. Allocated memory is still 201.3MB. Free memory was 142.7MB in the beginning and 140.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 813.73ms. Allocated memory is still 201.3MB. Free memory was 140.9MB in the beginning and 147.2MB in the end (delta: -6.3MB). Peak memory consumption was 29.5MB. Max. memory is 8.0GB. * TraceAbstraction took 67418.61ms. Allocated memory was 201.3MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 146.7MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1s, 69 PlacesBefore, 48 PlacesAfterwards, 53 TransitionsBefore, 32 TransitionsAfterwards, 1326 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 21 TotalNumberOfCompositions, 2372 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1638, independent: 1585, independent conditional: 0, independent unconditional: 1585, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1000, independent: 962, independent conditional: 0, independent unconditional: 962, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1000, independent: 905, independent conditional: 0, independent unconditional: 905, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 95, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 211, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1638, independent: 623, independent conditional: 0, independent unconditional: 623, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 1000, unknown conditional: 0, unknown unconditional: 1000] , Statistics on independence cache: Total cache size (in pairs): 197, Positive cache size: 182, Positive conditional cache size: 0, Positive unconditional cache size: 182, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 168]: 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 11 procedures, 101 locations, 6 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: 67.3s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 60.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1732 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1732 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 795 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9254 IncrementalHoareTripleChecker+Invalid, 10049 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 795 mSolverCounterUnsat, 0 mSDtfsCounter, 9254 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34252occurred in iteration=22, InterpolantAutomatonStates: 251, 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, 0.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 832 NumberOfCodeBlocks, 832 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 806 ConstructedInterpolants, 0 QuantifiedInterpolants, 2652 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 12:10:23,213 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...