/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:57:20,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:57:20,934 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 15:57:20,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:57:20,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:57:20,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:57:20,969 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:57:20,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:57:20,970 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:57:20,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:57:20,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:57:20,975 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:57:20,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:57:20,976 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:57:20,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:57:20,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:57:20,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:57:20,977 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:57:20,977 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:57:20,977 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:57:20,977 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:57:20,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:57:20,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:57:20,978 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:57:20,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:57:20,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:57:20,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:57:20,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:57:20,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:57:20,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:57:20,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:57:20,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:57:20,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:57:21,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:57:21,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:57:21,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:57:21,259 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:57:21,259 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:57:21,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-11-17 15:57:22,381 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:57:22,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:57:22,598 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-11-17 15:57:22,606 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe268d38/79ee55396c094f92adaab13cede8a2b4/FLAG8eb301279 [2023-11-17 15:57:22,623 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe268d38/79ee55396c094f92adaab13cede8a2b4 [2023-11-17 15:57:22,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:57:22,627 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:57:22,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:57:22,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:57:22,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:57:22,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1389b0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22, skipping insertion in model container [2023-11-17 15:57:22,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,670 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:57:22,856 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/chl-word-trans.wvr.c[3331,3344] [2023-11-17 15:57:22,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:57:22,871 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:57:22,900 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/chl-word-trans.wvr.c[3331,3344] [2023-11-17 15:57:22,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:57:22,919 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:57:22,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22 WrapperNode [2023-11-17 15:57:22,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:57:22,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:57:22,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:57:22,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:57:22,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,962 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 183 [2023-11-17 15:57:22,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:57:22,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:57:22,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:57:22,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:57:22,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:22,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:23,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:23,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:57:23,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:57:23,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:57:23,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:57:23,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (1/1) ... [2023-11-17 15:57:23,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:57:23,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:23,042 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 15:57:23,057 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 15:57:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:57:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:57:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:57:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:57:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:57:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:57:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:57:23,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:57:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:57:23,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:57:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:57:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:57:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:57:23,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:57:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:57:23,089 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 15:57:23,190 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:57:23,192 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:57:23,540 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:57:23,556 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:57:23,557 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 15:57:23,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:57:23 BoogieIcfgContainer [2023-11-17 15:57:23,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:57:23,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:57:23,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:57:23,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:57:23,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:57:22" (1/3) ... [2023-11-17 15:57:23,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6899f7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:57:23, skipping insertion in model container [2023-11-17 15:57:23,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:22" (2/3) ... [2023-11-17 15:57:23,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6899f7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:57:23, skipping insertion in model container [2023-11-17 15:57:23,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:57:23" (3/3) ... [2023-11-17 15:57:23,565 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-17 15:57:23,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:57:23,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:57:23,582 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:57:23,694 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:57:23,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 316 transitions, 653 flow [2023-11-17 15:57:23,844 INFO L124 PetriNetUnfolderBase]: 28/313 cut-off events. [2023-11-17 15:57:23,844 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:57:23,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 313 events. 28/313 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 402 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-11-17 15:57:23,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 316 transitions, 653 flow [2023-11-17 15:57:23,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 302 transitions, 622 flow [2023-11-17 15:57:23,869 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:57:23,882 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 302 transitions, 622 flow [2023-11-17 15:57:23,885 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 302 transitions, 622 flow [2023-11-17 15:57:23,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 302 transitions, 622 flow [2023-11-17 15:57:23,974 INFO L124 PetriNetUnfolderBase]: 28/302 cut-off events. [2023-11-17 15:57:23,974 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:57:23,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 302 events. 28/302 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 403 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-11-17 15:57:23,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 8448 [2023-11-17 15:57:32,417 INFO L134 LiptonReduction]: Checked pairs total: 11283 [2023-11-17 15:57:32,417 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-11-17 15:57:32,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:57:32,437 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;@3e5f42a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:57:32,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:57:32,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:57:32,444 INFO L124 PetriNetUnfolderBase]: 11/38 cut-off events. [2023-11-17 15:57:32,444 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:57:32,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:32,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:32,445 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 1 more)] === [2023-11-17 15:57:32,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:32,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1653731907, now seen corresponding path program 1 times [2023-11-17 15:57:32,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:32,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848109535] [2023-11-17 15:57:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:32,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:33,082 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 15:57:33,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:33,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848109535] [2023-11-17 15:57:33,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848109535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:33,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:33,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:33,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136275248] [2023-11-17 15:57:33,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:33,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:33,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:33,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:33,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-11-17 15:57:33,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:33,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-11-17 15:57:33,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:33,523 INFO L124 PetriNetUnfolderBase]: 1057/1496 cut-off events. [2023-11-17 15:57:33,524 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-17 15:57:33,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1496 events. 1057/1496 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5510 event pairs, 481 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 2604. Up to 1157 conditions per place. [2023-11-17 15:57:33,534 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 74 selfloop transitions, 4 changer transitions 2/81 dead transitions. [2023-11-17 15:57:33,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 81 transitions, 373 flow [2023-11-17 15:57:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1436 transitions. [2023-11-17 15:57:33,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473520249221184 [2023-11-17 15:57:33,552 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1436 transitions. [2023-11-17 15:57:33,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1436 transitions. [2023-11-17 15:57:33,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:33,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1436 transitions. [2023-11-17 15:57:33,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 287.2) internal successors, (1436), 5 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,575 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 96 flow. Second operand 5 states and 1436 transitions. [2023-11-17 15:57:33,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 81 transitions, 373 flow [2023-11-17 15:57:33,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 81 transitions, 339 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 15:57:33,581 INFO L231 Difference]: Finished difference. Result has 39 places, 42 transitions, 115 flow [2023-11-17 15:57:33,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=39, PETRI_TRANSITIONS=42} [2023-11-17 15:57:33,586 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-11-17 15:57:33,586 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 42 transitions, 115 flow [2023-11-17 15:57:33,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:33,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:33,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:57:33,588 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 1 more)] === [2023-11-17 15:57:33,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:33,589 INFO L85 PathProgramCache]: Analyzing trace with hash -698993871, now seen corresponding path program 2 times [2023-11-17 15:57:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:33,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171316715] [2023-11-17 15:57:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:33,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:33,813 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 15:57:33,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:33,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171316715] [2023-11-17 15:57:33,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171316715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:33,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:33,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:33,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692618083] [2023-11-17 15:57:33,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:33,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:33,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-11-17 15:57:33,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 42 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:33,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-11-17 15:57:33,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:34,227 INFO L124 PetriNetUnfolderBase]: 1412/2051 cut-off events. [2023-11-17 15:57:34,227 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2023-11-17 15:57:34,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 2051 events. 1412/2051 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8578 event pairs, 595 based on Foata normal form. 1/1665 useless extension candidates. Maximal degree in co-relation 4067. Up to 1333 conditions per place. [2023-11-17 15:57:34,240 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 79 selfloop transitions, 12 changer transitions 1/93 dead transitions. [2023-11-17 15:57:34,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 93 transitions, 432 flow [2023-11-17 15:57:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:34,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1445 transitions. [2023-11-17 15:57:34,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501557632398754 [2023-11-17 15:57:34,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1445 transitions. [2023-11-17 15:57:34,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1445 transitions. [2023-11-17 15:57:34,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:34,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1445 transitions. [2023-11-17 15:57:34,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,256 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,256 INFO L175 Difference]: Start difference. First operand has 39 places, 42 transitions, 115 flow. Second operand 5 states and 1445 transitions. [2023-11-17 15:57:34,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 93 transitions, 432 flow [2023-11-17 15:57:34,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 93 transitions, 423 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:34,262 INFO L231 Difference]: Finished difference. Result has 45 places, 50 transitions, 202 flow [2023-11-17 15:57:34,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=45, PETRI_TRANSITIONS=50} [2023-11-17 15:57:34,263 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-17 15:57:34,263 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 50 transitions, 202 flow [2023-11-17 15:57:34,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:34,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:34,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:57:34,265 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 1 more)] === [2023-11-17 15:57:34,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash 383624657, now seen corresponding path program 3 times [2023-11-17 15:57:34,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:34,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477691611] [2023-11-17 15:57:34,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:34,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:34,434 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 15:57:34,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:34,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477691611] [2023-11-17 15:57:34,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477691611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:34,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:34,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:34,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602521644] [2023-11-17 15:57:34,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:34,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:34,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:34,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:34,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-11-17 15:57:34,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 50 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:34,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-11-17 15:57:34,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:34,880 INFO L124 PetriNetUnfolderBase]: 1649/2424 cut-off events. [2023-11-17 15:57:34,881 INFO L125 PetriNetUnfolderBase]: For 1925/1925 co-relation queries the response was YES. [2023-11-17 15:57:34,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 2424 events. 1649/2424 cut-off events. For 1925/1925 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10872 event pairs, 481 based on Foata normal form. 1/2058 useless extension candidates. Maximal degree in co-relation 4912. Up to 1117 conditions per place. [2023-11-17 15:57:34,896 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 83 selfloop transitions, 17 changer transitions 1/102 dead transitions. [2023-11-17 15:57:34,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 102 transitions, 569 flow [2023-11-17 15:57:34,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1445 transitions. [2023-11-17 15:57:34,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501557632398754 [2023-11-17 15:57:34,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1445 transitions. [2023-11-17 15:57:34,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1445 transitions. [2023-11-17 15:57:34,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:34,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1445 transitions. [2023-11-17 15:57:34,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,912 INFO L175 Difference]: Start difference. First operand has 45 places, 50 transitions, 202 flow. Second operand 5 states and 1445 transitions. [2023-11-17 15:57:34,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 102 transitions, 569 flow [2023-11-17 15:57:34,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 102 transitions, 559 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:34,928 INFO L231 Difference]: Finished difference. Result has 51 places, 58 transitions, 313 flow [2023-11-17 15:57:34,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=51, PETRI_TRANSITIONS=58} [2023-11-17 15:57:34,929 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-11-17 15:57:34,929 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 58 transitions, 313 flow [2023-11-17 15:57:34,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:34,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:34,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:57:34,931 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 1 more)] === [2023-11-17 15:57:34,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:34,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2015000053, now seen corresponding path program 4 times [2023-11-17 15:57:34,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:34,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146062402] [2023-11-17 15:57:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:34,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:35,159 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 15:57:35,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146062402] [2023-11-17 15:57:35,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146062402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:35,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:35,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:35,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722917079] [2023-11-17 15:57:35,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:35,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:35,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:35,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:35,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:35,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-11-17 15:57:35,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 58 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:35,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-11-17 15:57:35,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:35,564 INFO L124 PetriNetUnfolderBase]: 1649/2416 cut-off events. [2023-11-17 15:57:35,564 INFO L125 PetriNetUnfolderBase]: For 3551/3551 co-relation queries the response was YES. [2023-11-17 15:57:35,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7571 conditions, 2416 events. 1649/2416 cut-off events. For 3551/3551 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10507 event pairs, 823 based on Foata normal form. 1/2046 useless extension candidates. Maximal degree in co-relation 6084. Up to 1571 conditions per place. [2023-11-17 15:57:35,583 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 87 selfloop transitions, 9 changer transitions 2/99 dead transitions. [2023-11-17 15:57:35,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 99 transitions, 672 flow [2023-11-17 15:57:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1437 transitions. [2023-11-17 15:57:35,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44766355140186914 [2023-11-17 15:57:35,588 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1437 transitions. [2023-11-17 15:57:35,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1437 transitions. [2023-11-17 15:57:35,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:35,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1437 transitions. [2023-11-17 15:57:35,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 287.4) internal successors, (1437), 5 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,599 INFO L175 Difference]: Start difference. First operand has 51 places, 58 transitions, 313 flow. Second operand 5 states and 1437 transitions. [2023-11-17 15:57:35,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 99 transitions, 672 flow [2023-11-17 15:57:35,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 99 transitions, 630 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:35,626 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 352 flow [2023-11-17 15:57:35,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-11-17 15:57:35,628 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-11-17 15:57:35,628 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 352 flow [2023-11-17 15:57:35,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:35,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:35,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:57:35,629 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 1 more)] === [2023-11-17 15:57:35,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:35,630 INFO L85 PathProgramCache]: Analyzing trace with hash 626642017, now seen corresponding path program 5 times [2023-11-17 15:57:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:35,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856413607] [2023-11-17 15:57:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:35,806 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 15:57:35,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:35,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856413607] [2023-11-17 15:57:35,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856413607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:35,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:35,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:35,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248348315] [2023-11-17 15:57:35,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:35,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:35,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:35,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:35,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:35,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-11-17 15:57:35,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:35,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-11-17 15:57:35,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:36,260 INFO L124 PetriNetUnfolderBase]: 1738/2564 cut-off events. [2023-11-17 15:57:36,260 INFO L125 PetriNetUnfolderBase]: For 3879/3879 co-relation queries the response was YES. [2023-11-17 15:57:36,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7820 conditions, 2564 events. 1738/2564 cut-off events. For 3879/3879 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11625 event pairs, 819 based on Foata normal form. 1/2181 useless extension candidates. Maximal degree in co-relation 7497. Up to 1937 conditions per place. [2023-11-17 15:57:36,278 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 97 selfloop transitions, 17 changer transitions 1/116 dead transitions. [2023-11-17 15:57:36,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 116 transitions, 769 flow [2023-11-17 15:57:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1446 transitions. [2023-11-17 15:57:36,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504672897196262 [2023-11-17 15:57:36,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1446 transitions. [2023-11-17 15:57:36,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1446 transitions. [2023-11-17 15:57:36,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:36,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1446 transitions. [2023-11-17 15:57:36,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.2) internal successors, (1446), 5 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,291 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 352 flow. Second operand 5 states and 1446 transitions. [2023-11-17 15:57:36,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 116 transitions, 769 flow [2023-11-17 15:57:36,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 116 transitions, 754 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:36,305 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 480 flow [2023-11-17 15:57:36,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-11-17 15:57:36,306 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-11-17 15:57:36,306 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 480 flow [2023-11-17 15:57:36,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:36,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:36,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:57:36,307 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 1 more)] === [2023-11-17 15:57:36,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:36,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1648231003, now seen corresponding path program 6 times [2023-11-17 15:57:36,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:36,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121988639] [2023-11-17 15:57:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:36,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:36,448 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 15:57:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121988639] [2023-11-17 15:57:36,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121988639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:36,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:36,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:36,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384398457] [2023-11-17 15:57:36,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:36,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:36,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:36,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:36,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:36,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-11-17 15:57:36,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 480 flow. Second operand has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:36,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-11-17 15:57:36,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:36,937 INFO L124 PetriNetUnfolderBase]: 1770/2613 cut-off events. [2023-11-17 15:57:36,937 INFO L125 PetriNetUnfolderBase]: For 5568/5568 co-relation queries the response was YES. [2023-11-17 15:57:36,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8796 conditions, 2613 events. 1770/2613 cut-off events. For 5568/5568 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11941 event pairs, 477 based on Foata normal form. 1/2303 useless extension candidates. Maximal degree in co-relation 8494. Up to 1219 conditions per place. [2023-11-17 15:57:36,960 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 92 selfloop transitions, 30 changer transitions 1/124 dead transitions. [2023-11-17 15:57:36,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 124 transitions, 928 flow [2023-11-17 15:57:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:36,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1447 transitions. [2023-11-17 15:57:36,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45077881619937693 [2023-11-17 15:57:36,965 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1447 transitions. [2023-11-17 15:57:36,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1447 transitions. [2023-11-17 15:57:36,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:36,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1447 transitions. [2023-11-17 15:57:36,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.4) internal successors, (1447), 5 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,974 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 480 flow. Second operand 5 states and 1447 transitions. [2023-11-17 15:57:36,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 124 transitions, 928 flow [2023-11-17 15:57:36,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 124 transitions, 917 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:36,994 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 645 flow [2023-11-17 15:57:36,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=645, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2023-11-17 15:57:36,995 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-11-17 15:57:36,995 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 645 flow [2023-11-17 15:57:36,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:36,996 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] [2023-11-17 15:57:36,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:57:36,997 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 1 more)] === [2023-11-17 15:57:36,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:36,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1132326818, now seen corresponding path program 1 times [2023-11-17 15:57:36,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:36,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245989439] [2023-11-17 15:57:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:36,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:37,180 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 15:57:37,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:37,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245989439] [2023-11-17 15:57:37,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245989439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:37,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:37,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:37,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135093890] [2023-11-17 15:57:37,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:37,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:57:37,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:37,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:57:37,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:57:37,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 642 [2023-11-17 15:57:37,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 645 flow. Second operand has 6 states, 6 states have (on average 241.33333333333334) internal successors, (1448), 6 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:37,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:37,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 642 [2023-11-17 15:57:37,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:37,815 INFO L124 PetriNetUnfolderBase]: 3233/4668 cut-off events. [2023-11-17 15:57:37,815 INFO L125 PetriNetUnfolderBase]: For 14209/14209 co-relation queries the response was YES. [2023-11-17 15:57:37,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17435 conditions, 4668 events. 3233/4668 cut-off events. For 14209/14209 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 22498 event pairs, 1327 based on Foata normal form. 5/4096 useless extension candidates. Maximal degree in co-relation 16852. Up to 1442 conditions per place. [2023-11-17 15:57:37,848 INFO L140 encePairwiseOnDemand]: 632/642 looper letters, 122 selfloop transitions, 25 changer transitions 28/176 dead transitions. [2023-11-17 15:57:37,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 176 transitions, 1646 flow [2023-11-17 15:57:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:57:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:57:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1775 transitions. [2023-11-17 15:57:37,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.394971072541166 [2023-11-17 15:57:37,853 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1775 transitions. [2023-11-17 15:57:37,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1775 transitions. [2023-11-17 15:57:37,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:37,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1775 transitions. [2023-11-17 15:57:37,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 253.57142857142858) internal successors, (1775), 7 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:37,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:37,865 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:37,865 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 645 flow. Second operand 7 states and 1775 transitions. [2023-11-17 15:57:37,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 176 transitions, 1646 flow [2023-11-17 15:57:37,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 176 transitions, 1576 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:37,924 INFO L231 Difference]: Finished difference. Result has 77 places, 91 transitions, 770 flow [2023-11-17 15:57:37,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=770, PETRI_PLACES=77, PETRI_TRANSITIONS=91} [2023-11-17 15:57:37,926 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2023-11-17 15:57:37,926 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 91 transitions, 770 flow [2023-11-17 15:57:37,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.33333333333334) internal successors, (1448), 6 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:37,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:37,927 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] [2023-11-17 15:57:37,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:57:37,928 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 1 more)] === [2023-11-17 15:57:37,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:37,930 INFO L85 PathProgramCache]: Analyzing trace with hash -678742262, now seen corresponding path program 1 times [2023-11-17 15:57:37,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:37,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827203708] [2023-11-17 15:57:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:37,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:38,101 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 15:57:38,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:38,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827203708] [2023-11-17 15:57:38,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827203708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:38,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:38,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:38,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82204160] [2023-11-17 15:57:38,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:38,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:38,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:38,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:38,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:38,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:38,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 91 transitions, 770 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:38,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:38,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:38,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:38,795 INFO L124 PetriNetUnfolderBase]: 3044/4451 cut-off events. [2023-11-17 15:57:38,795 INFO L125 PetriNetUnfolderBase]: For 13461/13461 co-relation queries the response was YES. [2023-11-17 15:57:38,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16547 conditions, 4451 events. 3044/4451 cut-off events. For 13461/13461 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 21694 event pairs, 917 based on Foata normal form. 1/3886 useless extension candidates. Maximal degree in co-relation 16439. Up to 2047 conditions per place. [2023-11-17 15:57:38,824 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 138 selfloop transitions, 18 changer transitions 14/171 dead transitions. [2023-11-17 15:57:38,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 171 transitions, 1689 flow [2023-11-17 15:57:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1460 transitions. [2023-11-17 15:57:38,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45482866043613707 [2023-11-17 15:57:38,828 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1460 transitions. [2023-11-17 15:57:38,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1460 transitions. [2023-11-17 15:57:38,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:38,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1460 transitions. [2023-11-17 15:57:38,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:38,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:38,837 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:38,837 INFO L175 Difference]: Start difference. First operand has 77 places, 91 transitions, 770 flow. Second operand 5 states and 1460 transitions. [2023-11-17 15:57:38,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 171 transitions, 1689 flow [2023-11-17 15:57:38,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 171 transitions, 1632 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 15:57:38,897 INFO L231 Difference]: Finished difference. Result has 81 places, 99 transitions, 883 flow [2023-11-17 15:57:38,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=883, PETRI_PLACES=81, PETRI_TRANSITIONS=99} [2023-11-17 15:57:38,898 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 43 predicate places. [2023-11-17 15:57:38,898 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 99 transitions, 883 flow [2023-11-17 15:57:38,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:38,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:38,899 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] [2023-11-17 15:57:38,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:57:38,899 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 1 more)] === [2023-11-17 15:57:38,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:38,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1957447522, now seen corresponding path program 2 times [2023-11-17 15:57:38,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:38,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168674753] [2023-11-17 15:57:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:38,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:39,042 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 15:57:39,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:39,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168674753] [2023-11-17 15:57:39,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168674753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:39,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:39,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151090062] [2023-11-17 15:57:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:39,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:39,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:39,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:39,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:39,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 99 transitions, 883 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:39,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:39,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:39,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:39,672 INFO L124 PetriNetUnfolderBase]: 3008/4438 cut-off events. [2023-11-17 15:57:39,673 INFO L125 PetriNetUnfolderBase]: For 21807/21859 co-relation queries the response was YES. [2023-11-17 15:57:39,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16611 conditions, 4438 events. 3008/4438 cut-off events. For 21807/21859 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 21936 event pairs, 1386 based on Foata normal form. 1/4060 useless extension candidates. Maximal degree in co-relation 15815. Up to 2870 conditions per place. [2023-11-17 15:57:39,701 INFO L140 encePairwiseOnDemand]: 638/642 looper letters, 111 selfloop transitions, 12 changer transitions 11/135 dead transitions. [2023-11-17 15:57:39,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 135 transitions, 1282 flow [2023-11-17 15:57:39,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1451 transitions. [2023-11-17 15:57:39,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520249221183801 [2023-11-17 15:57:39,706 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1451 transitions. [2023-11-17 15:57:39,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1451 transitions. [2023-11-17 15:57:39,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:39,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1451 transitions. [2023-11-17 15:57:39,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:39,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:39,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:39,713 INFO L175 Difference]: Start difference. First operand has 81 places, 99 transitions, 883 flow. Second operand 5 states and 1451 transitions. [2023-11-17 15:57:39,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 135 transitions, 1282 flow [2023-11-17 15:57:39,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 135 transitions, 1245 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:39,762 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 850 flow [2023-11-17 15:57:39,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=850, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2023-11-17 15:57:39,764 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 47 predicate places. [2023-11-17 15:57:39,764 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 850 flow [2023-11-17 15:57:39,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:39,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:39,766 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] [2023-11-17 15:57:39,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:57:39,767 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 1 more)] === [2023-11-17 15:57:39,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash -982888294, now seen corresponding path program 1 times [2023-11-17 15:57:39,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:39,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822617380] [2023-11-17 15:57:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:39,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:39,935 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 15:57:39,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:39,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822617380] [2023-11-17 15:57:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822617380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:39,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:39,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:39,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806070414] [2023-11-17 15:57:39,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:39,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:39,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:39,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:39,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:39,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:39,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 850 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:39,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:39,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:39,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:40,615 INFO L124 PetriNetUnfolderBase]: 3098/4526 cut-off events. [2023-11-17 15:57:40,615 INFO L125 PetriNetUnfolderBase]: For 22710/22726 co-relation queries the response was YES. [2023-11-17 15:57:40,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17153 conditions, 4526 events. 3098/4526 cut-off events. For 22710/22726 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 22885 event pairs, 577 based on Foata normal form. 1/4142 useless extension candidates. Maximal degree in co-relation 17070. Up to 2410 conditions per place. [2023-11-17 15:57:40,647 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 148 selfloop transitions, 9 changer transitions 2/160 dead transitions. [2023-11-17 15:57:40,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 160 transitions, 1527 flow [2023-11-17 15:57:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1464 transitions. [2023-11-17 15:57:40,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45607476635514016 [2023-11-17 15:57:40,691 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1464 transitions. [2023-11-17 15:57:40,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1464 transitions. [2023-11-17 15:57:40,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:40,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1464 transitions. [2023-11-17 15:57:40,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.8) internal successors, (1464), 5 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:40,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:40,699 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:40,699 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 850 flow. Second operand 5 states and 1464 transitions. [2023-11-17 15:57:40,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 160 transitions, 1527 flow [2023-11-17 15:57:40,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 160 transitions, 1499 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 15:57:40,745 INFO L231 Difference]: Finished difference. Result has 86 places, 103 transitions, 967 flow [2023-11-17 15:57:40,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=967, PETRI_PLACES=86, PETRI_TRANSITIONS=103} [2023-11-17 15:57:40,747 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 48 predicate places. [2023-11-17 15:57:40,747 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 103 transitions, 967 flow [2023-11-17 15:57:40,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:40,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:40,748 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] [2023-11-17 15:57:40,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:57:40,750 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 1 more)] === [2023-11-17 15:57:40,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:40,750 INFO L85 PathProgramCache]: Analyzing trace with hash 355405406, now seen corresponding path program 3 times [2023-11-17 15:57:40,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:40,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888714973] [2023-11-17 15:57:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:40,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:40,876 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 15:57:40,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:40,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888714973] [2023-11-17 15:57:40,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888714973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:40,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:40,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:40,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814466834] [2023-11-17 15:57:40,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:40,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:40,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:40,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:40,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:40,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:40,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 103 transitions, 967 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:40,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:40,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:40,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:41,503 INFO L124 PetriNetUnfolderBase]: 3107/4625 cut-off events. [2023-11-17 15:57:41,503 INFO L125 PetriNetUnfolderBase]: For 22478/22530 co-relation queries the response was YES. [2023-11-17 15:57:41,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17548 conditions, 4625 events. 3107/4625 cut-off events. For 22478/22530 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23547 event pairs, 1379 based on Foata normal form. 1/4231 useless extension candidates. Maximal degree in co-relation 16966. Up to 3023 conditions per place. [2023-11-17 15:57:41,535 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 127 selfloop transitions, 18 changer transitions 12/158 dead transitions. [2023-11-17 15:57:41,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 158 transitions, 1572 flow [2023-11-17 15:57:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1460 transitions. [2023-11-17 15:57:41,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45482866043613707 [2023-11-17 15:57:41,540 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1460 transitions. [2023-11-17 15:57:41,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1460 transitions. [2023-11-17 15:57:41,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:41,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1460 transitions. [2023-11-17 15:57:41,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:41,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:41,547 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:41,547 INFO L175 Difference]: Start difference. First operand has 86 places, 103 transitions, 967 flow. Second operand 5 states and 1460 transitions. [2023-11-17 15:57:41,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 158 transitions, 1572 flow [2023-11-17 15:57:41,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 158 transitions, 1549 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:41,613 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 996 flow [2023-11-17 15:57:41,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=996, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2023-11-17 15:57:41,614 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 53 predicate places. [2023-11-17 15:57:41,614 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 996 flow [2023-11-17 15:57:41,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:41,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:41,614 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] [2023-11-17 15:57:41,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:57:41,615 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 1 more)] === [2023-11-17 15:57:41,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:41,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1025779630, now seen corresponding path program 2 times [2023-11-17 15:57:41,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:41,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079262506] [2023-11-17 15:57:41,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:41,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:41,753 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 15:57:41,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:41,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079262506] [2023-11-17 15:57:41,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079262506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:41,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:41,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960999541] [2023-11-17 15:57:41,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:41,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:41,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:41,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:41,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:41,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:41,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 996 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:41,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:41,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:41,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:42,380 INFO L124 PetriNetUnfolderBase]: 3073/4520 cut-off events. [2023-11-17 15:57:42,380 INFO L125 PetriNetUnfolderBase]: For 23583/23583 co-relation queries the response was YES. [2023-11-17 15:57:42,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17641 conditions, 4520 events. 3073/4520 cut-off events. For 23583/23583 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 22267 event pairs, 1561 based on Foata normal form. 1/4108 useless extension candidates. Maximal degree in co-relation 17097. Up to 3671 conditions per place. [2023-11-17 15:57:42,414 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 141 selfloop transitions, 13 changer transitions 2/157 dead transitions. [2023-11-17 15:57:42,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 157 transitions, 1521 flow [2023-11-17 15:57:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1463 transitions. [2023-11-17 15:57:42,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557632398753894 [2023-11-17 15:57:42,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1463 transitions. [2023-11-17 15:57:42,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1463 transitions. [2023-11-17 15:57:42,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:42,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1463 transitions. [2023-11-17 15:57:42,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.6) internal successors, (1463), 5 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:42,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:42,426 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:42,426 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 996 flow. Second operand 5 states and 1463 transitions. [2023-11-17 15:57:42,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 157 transitions, 1521 flow [2023-11-17 15:57:42,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 157 transitions, 1481 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-17 15:57:42,497 INFO L231 Difference]: Finished difference. Result has 94 places, 109 transitions, 1058 flow [2023-11-17 15:57:42,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1058, PETRI_PLACES=94, PETRI_TRANSITIONS=109} [2023-11-17 15:57:42,500 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 56 predicate places. [2023-11-17 15:57:42,500 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 109 transitions, 1058 flow [2023-11-17 15:57:42,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:42,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:42,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:57:42,501 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 1 more)] === [2023-11-17 15:57:42,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash 925615528, now seen corresponding path program 3 times [2023-11-17 15:57:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866915789] [2023-11-17 15:57:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:42,616 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 15:57:42,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:42,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866915789] [2023-11-17 15:57:42,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866915789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:42,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:42,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788920395] [2023-11-17 15:57:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:42,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:42,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:42,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:42,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:42,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 109 transitions, 1058 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:42,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:42,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:42,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:43,253 INFO L124 PetriNetUnfolderBase]: 3774/5729 cut-off events. [2023-11-17 15:57:43,253 INFO L125 PetriNetUnfolderBase]: For 32523/32523 co-relation queries the response was YES. [2023-11-17 15:57:43,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21854 conditions, 5729 events. 3774/5729 cut-off events. For 32523/32523 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 32379 event pairs, 300 based on Foata normal form. 1/5233 useless extension candidates. Maximal degree in co-relation 21299. Up to 1958 conditions per place. [2023-11-17 15:57:43,290 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 177 selfloop transitions, 30 changer transitions 1/209 dead transitions. [2023-11-17 15:57:43,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 209 transitions, 2116 flow [2023-11-17 15:57:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:57:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:57:43,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1765 transitions. [2023-11-17 15:57:43,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45820353063343716 [2023-11-17 15:57:43,297 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1765 transitions. [2023-11-17 15:57:43,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1765 transitions. [2023-11-17 15:57:43,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:43,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1765 transitions. [2023-11-17 15:57:43,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.1666666666667) internal successors, (1765), 6 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,306 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,306 INFO L175 Difference]: Start difference. First operand has 94 places, 109 transitions, 1058 flow. Second operand 6 states and 1765 transitions. [2023-11-17 15:57:43,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 209 transitions, 2116 flow [2023-11-17 15:57:43,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 209 transitions, 2078 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:43,402 INFO L231 Difference]: Finished difference. Result has 102 places, 123 transitions, 1336 flow [2023-11-17 15:57:43,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1336, PETRI_PLACES=102, PETRI_TRANSITIONS=123} [2023-11-17 15:57:43,403 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2023-11-17 15:57:43,404 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 123 transitions, 1336 flow [2023-11-17 15:57:43,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:43,404 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] [2023-11-17 15:57:43,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 15:57:43,405 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 1 more)] === [2023-11-17 15:57:43,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:43,405 INFO L85 PathProgramCache]: Analyzing trace with hash -801646592, now seen corresponding path program 4 times [2023-11-17 15:57:43,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:43,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666273977] [2023-11-17 15:57:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:43,562 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 15:57:43,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:43,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666273977] [2023-11-17 15:57:43,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666273977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:43,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:43,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:57:43,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529750979] [2023-11-17 15:57:43,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:43,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:43,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:43,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:43,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:43,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 642 [2023-11-17 15:57:43,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 123 transitions, 1336 flow. Second operand has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:43,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 642 [2023-11-17 15:57:43,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:44,521 INFO L124 PetriNetUnfolderBase]: 6624/9671 cut-off events. [2023-11-17 15:57:44,521 INFO L125 PetriNetUnfolderBase]: For 70711/70711 co-relation queries the response was YES. [2023-11-17 15:57:44,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41436 conditions, 9671 events. 6624/9671 cut-off events. For 70711/70711 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 54740 event pairs, 2168 based on Foata normal form. 9/8768 useless extension candidates. Maximal degree in co-relation 40512. Up to 3697 conditions per place. [2023-11-17 15:57:44,570 INFO L140 encePairwiseOnDemand]: 632/642 looper letters, 200 selfloop transitions, 31 changer transitions 8/240 dead transitions. [2023-11-17 15:57:44,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 240 transitions, 3152 flow [2023-11-17 15:57:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:57:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:57:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1523 transitions. [2023-11-17 15:57:44,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953790238836968 [2023-11-17 15:57:44,574 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1523 transitions. [2023-11-17 15:57:44,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1523 transitions. [2023-11-17 15:57:44,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:44,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1523 transitions. [2023-11-17 15:57:44,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.83333333333334) internal successors, (1523), 6 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:44,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:44,583 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:44,583 INFO L175 Difference]: Start difference. First operand has 102 places, 123 transitions, 1336 flow. Second operand 6 states and 1523 transitions. [2023-11-17 15:57:44,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 240 transitions, 3152 flow [2023-11-17 15:57:44,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 240 transitions, 3050 flow, removed 51 selfloop flow, removed 0 redundant places. [2023-11-17 15:57:44,823 INFO L231 Difference]: Finished difference. Result has 110 places, 139 transitions, 1566 flow [2023-11-17 15:57:44,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1566, PETRI_PLACES=110, PETRI_TRANSITIONS=139} [2023-11-17 15:57:44,824 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 72 predicate places. [2023-11-17 15:57:44,824 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 139 transitions, 1566 flow [2023-11-17 15:57:44,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:44,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:44,825 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] [2023-11-17 15:57:44,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 15:57:44,825 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 1 more)] === [2023-11-17 15:57:44,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash -387992162, now seen corresponding path program 4 times [2023-11-17 15:57:44,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:44,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279197803] [2023-11-17 15:57:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:44,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:44,949 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 15:57:44,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:44,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279197803] [2023-11-17 15:57:44,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279197803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:44,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:44,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:44,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770692141] [2023-11-17 15:57:44,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:44,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:44,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:44,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:44,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:44,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:44,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 139 transitions, 1566 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:44,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:44,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:44,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:45,948 INFO L124 PetriNetUnfolderBase]: 5940/8654 cut-off events. [2023-11-17 15:57:45,949 INFO L125 PetriNetUnfolderBase]: For 54167/54167 co-relation queries the response was YES. [2023-11-17 15:57:45,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36362 conditions, 8654 events. 5940/8654 cut-off events. For 54167/54167 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 47130 event pairs, 2593 based on Foata normal form. 1/7783 useless extension candidates. Maximal degree in co-relation 35864. Up to 7121 conditions per place. [2023-11-17 15:57:46,013 INFO L140 encePairwiseOnDemand]: 638/642 looper letters, 143 selfloop transitions, 16 changer transitions 13/173 dead transitions. [2023-11-17 15:57:46,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 173 transitions, 2017 flow [2023-11-17 15:57:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:46,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1450 transitions. [2023-11-17 15:57:46,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517133956386293 [2023-11-17 15:57:46,018 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1450 transitions. [2023-11-17 15:57:46,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1450 transitions. [2023-11-17 15:57:46,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:46,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1450 transitions. [2023-11-17 15:57:46,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:46,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:46,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:46,026 INFO L175 Difference]: Start difference. First operand has 110 places, 139 transitions, 1566 flow. Second operand 5 states and 1450 transitions. [2023-11-17 15:57:46,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 173 transitions, 2017 flow [2023-11-17 15:57:46,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 173 transitions, 1963 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 15:57:46,222 INFO L231 Difference]: Finished difference. Result has 113 places, 135 transitions, 1482 flow [2023-11-17 15:57:46,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1482, PETRI_PLACES=113, PETRI_TRANSITIONS=135} [2023-11-17 15:57:46,224 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2023-11-17 15:57:46,224 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 135 transitions, 1482 flow [2023-11-17 15:57:46,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:46,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:46,224 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] [2023-11-17 15:57:46,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 15:57:46,224 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 1 more)] === [2023-11-17 15:57:46,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1786816076, now seen corresponding path program 5 times [2023-11-17 15:57:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:46,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402838796] [2023-11-17 15:57:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:46,339 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 15:57:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402838796] [2023-11-17 15:57:46,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402838796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:46,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:46,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555519975] [2023-11-17 15:57:46,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:46,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:46,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:46,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:46,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:46,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:46,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 135 transitions, 1482 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:46,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:46,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:46,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:47,345 INFO L124 PetriNetUnfolderBase]: 5948/8718 cut-off events. [2023-11-17 15:57:47,345 INFO L125 PetriNetUnfolderBase]: For 56476/56476 co-relation queries the response was YES. [2023-11-17 15:57:47,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35516 conditions, 8718 events. 5948/8718 cut-off events. For 56476/56476 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 47678 event pairs, 1634 based on Foata normal form. 1/7863 useless extension candidates. Maximal degree in co-relation 35396. Up to 4054 conditions per place. [2023-11-17 15:57:47,410 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 174 selfloop transitions, 24 changer transitions 12/211 dead transitions. [2023-11-17 15:57:47,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 211 transitions, 2505 flow [2023-11-17 15:57:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1462 transitions. [2023-11-17 15:57:47,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554517133956386 [2023-11-17 15:57:47,414 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1462 transitions. [2023-11-17 15:57:47,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1462 transitions. [2023-11-17 15:57:47,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:47,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1462 transitions. [2023-11-17 15:57:47,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.4) internal successors, (1462), 5 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:47,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:47,422 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:47,422 INFO L175 Difference]: Start difference. First operand has 113 places, 135 transitions, 1482 flow. Second operand 5 states and 1462 transitions. [2023-11-17 15:57:47,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 211 transitions, 2505 flow [2023-11-17 15:57:47,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 211 transitions, 2433 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-17 15:57:47,683 INFO L231 Difference]: Finished difference. Result has 113 places, 148 transitions, 1748 flow [2023-11-17 15:57:47,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1748, PETRI_PLACES=113, PETRI_TRANSITIONS=148} [2023-11-17 15:57:47,684 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2023-11-17 15:57:47,684 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 148 transitions, 1748 flow [2023-11-17 15:57:47,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:47,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:47,685 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] [2023-11-17 15:57:47,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 15:57:47,685 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 1 more)] === [2023-11-17 15:57:47,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:47,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1869608082, now seen corresponding path program 6 times [2023-11-17 15:57:47,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:47,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127723177] [2023-11-17 15:57:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:47,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:47,826 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 15:57:47,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:47,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127723177] [2023-11-17 15:57:47,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127723177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:47,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:47,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:47,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598522943] [2023-11-17 15:57:47,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:47,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:47,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:47,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:47,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 148 transitions, 1748 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:47,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:47,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:47,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:48,837 INFO L124 PetriNetUnfolderBase]: 5891/8622 cut-off events. [2023-11-17 15:57:48,837 INFO L125 PetriNetUnfolderBase]: For 63869/63869 co-relation queries the response was YES. [2023-11-17 15:57:48,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35724 conditions, 8622 events. 5891/8622 cut-off events. For 63869/63869 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 47305 event pairs, 2577 based on Foata normal form. 1/7743 useless extension candidates. Maximal degree in co-relation 34728. Up to 7121 conditions per place. [2023-11-17 15:57:48,901 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 159 selfloop transitions, 29 changer transitions 10/199 dead transitions. [2023-11-17 15:57:48,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 199 transitions, 2370 flow [2023-11-17 15:57:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1460 transitions. [2023-11-17 15:57:48,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45482866043613707 [2023-11-17 15:57:48,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1460 transitions. [2023-11-17 15:57:48,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1460 transitions. [2023-11-17 15:57:48,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:48,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1460 transitions. [2023-11-17 15:57:48,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:48,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:48,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:48,912 INFO L175 Difference]: Start difference. First operand has 113 places, 148 transitions, 1748 flow. Second operand 5 states and 1460 transitions. [2023-11-17 15:57:48,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 199 transitions, 2370 flow [2023-11-17 15:57:49,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 2344 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:49,117 INFO L231 Difference]: Finished difference. Result has 118 places, 151 transitions, 1807 flow [2023-11-17 15:57:49,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1807, PETRI_PLACES=118, PETRI_TRANSITIONS=151} [2023-11-17 15:57:49,118 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 80 predicate places. [2023-11-17 15:57:49,118 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 151 transitions, 1807 flow [2023-11-17 15:57:49,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:49,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:49,118 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] [2023-11-17 15:57:49,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 15:57:49,119 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 1 more)] === [2023-11-17 15:57:49,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1186682657, now seen corresponding path program 1 times [2023-11-17 15:57:49,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:49,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841532225] [2023-11-17 15:57:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:49,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:49,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:49,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841532225] [2023-11-17 15:57:49,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841532225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:49,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:49,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196805131] [2023-11-17 15:57:49,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:49,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:49,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:49,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:49,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:49,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 151 transitions, 1807 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:49,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:49,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:49,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:50,219 INFO L124 PetriNetUnfolderBase]: 6146/9051 cut-off events. [2023-11-17 15:57:50,219 INFO L125 PetriNetUnfolderBase]: For 68360/68360 co-relation queries the response was YES. [2023-11-17 15:57:50,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38136 conditions, 9051 events. 6146/9051 cut-off events. For 68360/68360 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 50903 event pairs, 2511 based on Foata normal form. 1/8140 useless extension candidates. Maximal degree in co-relation 37133. Up to 6729 conditions per place. [2023-11-17 15:57:50,373 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 184 selfloop transitions, 17 changer transitions 2/204 dead transitions. [2023-11-17 15:57:50,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 204 transitions, 2484 flow [2023-11-17 15:57:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1461 transitions. [2023-11-17 15:57:50,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514018691588787 [2023-11-17 15:57:50,377 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1461 transitions. [2023-11-17 15:57:50,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1461 transitions. [2023-11-17 15:57:50,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:50,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1461 transitions. [2023-11-17 15:57:50,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.2) internal successors, (1461), 5 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:50,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:50,384 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:50,384 INFO L175 Difference]: Start difference. First operand has 118 places, 151 transitions, 1807 flow. Second operand 5 states and 1461 transitions. [2023-11-17 15:57:50,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 204 transitions, 2484 flow [2023-11-17 15:57:50,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 204 transitions, 2438 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:50,622 INFO L231 Difference]: Finished difference. Result has 122 places, 154 transitions, 1878 flow [2023-11-17 15:57:50,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1878, PETRI_PLACES=122, PETRI_TRANSITIONS=154} [2023-11-17 15:57:50,623 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2023-11-17 15:57:50,623 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 154 transitions, 1878 flow [2023-11-17 15:57:50,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:50,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:50,623 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] [2023-11-17 15:57:50,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 15:57:50,624 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 1 more)] === [2023-11-17 15:57:50,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:50,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1972937729, now seen corresponding path program 2 times [2023-11-17 15:57:50,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:50,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239279027] [2023-11-17 15:57:50,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:50,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:50,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:50,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239279027] [2023-11-17 15:57:50,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239279027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:50,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:50,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:50,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036128944] [2023-11-17 15:57:50,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:50,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:50,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:50,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:50,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:50,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:50,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 154 transitions, 1878 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:50,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:50,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:50,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:51,739 INFO L124 PetriNetUnfolderBase]: 6087/9078 cut-off events. [2023-11-17 15:57:51,739 INFO L125 PetriNetUnfolderBase]: For 71343/71343 co-relation queries the response was YES. [2023-11-17 15:57:51,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38438 conditions, 9078 events. 6087/9078 cut-off events. For 71343/71343 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 52790 event pairs, 1047 based on Foata normal form. 1/8233 useless extension candidates. Maximal degree in co-relation 37452. Up to 5442 conditions per place. [2023-11-17 15:57:51,798 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 192 selfloop transitions, 20 changer transitions 2/215 dead transitions. [2023-11-17 15:57:51,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 215 transitions, 2750 flow [2023-11-17 15:57:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1461 transitions. [2023-11-17 15:57:51,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514018691588787 [2023-11-17 15:57:51,802 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1461 transitions. [2023-11-17 15:57:51,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1461 transitions. [2023-11-17 15:57:51,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:51,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1461 transitions. [2023-11-17 15:57:51,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.2) internal successors, (1461), 5 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:51,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:51,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:51,808 INFO L175 Difference]: Start difference. First operand has 122 places, 154 transitions, 1878 flow. Second operand 5 states and 1461 transitions. [2023-11-17 15:57:51,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 215 transitions, 2750 flow [2023-11-17 15:57:52,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 215 transitions, 2728 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:52,023 INFO L231 Difference]: Finished difference. Result has 128 places, 163 transitions, 2123 flow [2023-11-17 15:57:52,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2123, PETRI_PLACES=128, PETRI_TRANSITIONS=163} [2023-11-17 15:57:52,023 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 90 predicate places. [2023-11-17 15:57:52,024 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 163 transitions, 2123 flow [2023-11-17 15:57:52,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:52,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:52,024 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] [2023-11-17 15:57:52,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 15:57:52,024 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 1 more)] === [2023-11-17 15:57:52,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash -725836729, now seen corresponding path program 3 times [2023-11-17 15:57:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:52,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851742365] [2023-11-17 15:57:52,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:52,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:52,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851742365] [2023-11-17 15:57:52,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851742365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:52,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:52,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:52,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695371721] [2023-11-17 15:57:52,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:52,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:52,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:52,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:52,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 163 transitions, 2123 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:52,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:53,161 INFO L124 PetriNetUnfolderBase]: 6028/8967 cut-off events. [2023-11-17 15:57:53,161 INFO L125 PetriNetUnfolderBase]: For 75850/75850 co-relation queries the response was YES. [2023-11-17 15:57:53,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38930 conditions, 8967 events. 6028/8967 cut-off events. For 75850/75850 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 51242 event pairs, 2547 based on Foata normal form. 1/8130 useless extension candidates. Maximal degree in co-relation 37941. Up to 6729 conditions per place. [2023-11-17 15:57:53,222 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 171 selfloop transitions, 25 changer transitions 6/203 dead transitions. [2023-11-17 15:57:53,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 203 transitions, 2673 flow [2023-11-17 15:57:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:53,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2023-11-17 15:57:53,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453582554517134 [2023-11-17 15:57:53,232 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2023-11-17 15:57:53,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2023-11-17 15:57:53,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:53,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2023-11-17 15:57:53,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:53,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:53,239 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:53,239 INFO L175 Difference]: Start difference. First operand has 128 places, 163 transitions, 2123 flow. Second operand 5 states and 1456 transitions. [2023-11-17 15:57:53,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 203 transitions, 2673 flow [2023-11-17 15:57:53,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 203 transitions, 2639 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:53,485 INFO L231 Difference]: Finished difference. Result has 132 places, 158 transitions, 2090 flow [2023-11-17 15:57:53,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2090, PETRI_PLACES=132, PETRI_TRANSITIONS=158} [2023-11-17 15:57:53,486 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 94 predicate places. [2023-11-17 15:57:53,486 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 158 transitions, 2090 flow [2023-11-17 15:57:53,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:53,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:53,486 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] [2023-11-17 15:57:53,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 15:57:53,487 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 1 more)] === [2023-11-17 15:57:53,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:53,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1327864459, now seen corresponding path program 4 times [2023-11-17 15:57:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:53,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681362592] [2023-11-17 15:57:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:53,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:53,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:53,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681362592] [2023-11-17 15:57:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681362592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:53,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:53,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:53,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828503969] [2023-11-17 15:57:53,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:53,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:53,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:53,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:53,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:53,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:53,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 158 transitions, 2090 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:53,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:53,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:53,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:54,743 INFO L124 PetriNetUnfolderBase]: 7166/10691 cut-off events. [2023-11-17 15:57:54,743 INFO L125 PetriNetUnfolderBase]: For 83632/83632 co-relation queries the response was YES. [2023-11-17 15:57:54,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45198 conditions, 10691 events. 7166/10691 cut-off events. For 83632/83632 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 63024 event pairs, 1041 based on Foata normal form. 1/9600 useless extension candidates. Maximal degree in co-relation 44289. Up to 3173 conditions per place. [2023-11-17 15:57:54,809 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 203 selfloop transitions, 56 changer transitions 3/263 dead transitions. [2023-11-17 15:57:54,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 263 transitions, 3356 flow [2023-11-17 15:57:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:57:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:57:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1768 transitions. [2023-11-17 15:57:54,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45898234683281414 [2023-11-17 15:57:54,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1768 transitions. [2023-11-17 15:57:54,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1768 transitions. [2023-11-17 15:57:54,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:54,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1768 transitions. [2023-11-17 15:57:54,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.6666666666667) internal successors, (1768), 6 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:54,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:54,817 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:54,818 INFO L175 Difference]: Start difference. First operand has 132 places, 158 transitions, 2090 flow. Second operand 6 states and 1768 transitions. [2023-11-17 15:57:54,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 263 transitions, 3356 flow [2023-11-17 15:57:55,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 263 transitions, 3261 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-17 15:57:55,051 INFO L231 Difference]: Finished difference. Result has 134 places, 173 transitions, 2406 flow [2023-11-17 15:57:55,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2406, PETRI_PLACES=134, PETRI_TRANSITIONS=173} [2023-11-17 15:57:55,051 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 96 predicate places. [2023-11-17 15:57:55,051 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 173 transitions, 2406 flow [2023-11-17 15:57:55,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:55,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:55,051 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] [2023-11-17 15:57:55,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 15:57:55,052 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 1 more)] === [2023-11-17 15:57:55,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1448288887, now seen corresponding path program 5 times [2023-11-17 15:57:55,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:55,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946196441] [2023-11-17 15:57:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:55,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:55,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:55,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946196441] [2023-11-17 15:57:55,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946196441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:55,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:55,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:55,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062225904] [2023-11-17 15:57:55,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:55,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:55,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:55,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:55,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:55,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:55,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 173 transitions, 2406 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:55,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:55,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:55,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:56,430 INFO L124 PetriNetUnfolderBase]: 7380/11077 cut-off events. [2023-11-17 15:57:56,430 INFO L125 PetriNetUnfolderBase]: For 92836/92836 co-relation queries the response was YES. [2023-11-17 15:57:56,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47732 conditions, 11077 events. 7380/11077 cut-off events. For 92836/92836 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 66664 event pairs, 778 based on Foata normal form. 1/9948 useless extension candidates. Maximal degree in co-relation 46745. Up to 4651 conditions per place. [2023-11-17 15:57:56,496 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 209 selfloop transitions, 45 changer transitions 3/258 dead transitions. [2023-11-17 15:57:56,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 258 transitions, 3405 flow [2023-11-17 15:57:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:57:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:57:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1766 transitions. [2023-11-17 15:57:56,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45846313603322947 [2023-11-17 15:57:56,499 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1766 transitions. [2023-11-17 15:57:56,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1766 transitions. [2023-11-17 15:57:56,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:56,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1766 transitions. [2023-11-17 15:57:56,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.3333333333333) internal successors, (1766), 6 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:56,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:56,504 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:56,504 INFO L175 Difference]: Start difference. First operand has 134 places, 173 transitions, 2406 flow. Second operand 6 states and 1766 transitions. [2023-11-17 15:57:56,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 258 transitions, 3405 flow [2023-11-17 15:57:56,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 258 transitions, 3366 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:56,830 INFO L231 Difference]: Finished difference. Result has 141 places, 176 transitions, 2563 flow [2023-11-17 15:57:56,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2563, PETRI_PLACES=141, PETRI_TRANSITIONS=176} [2023-11-17 15:57:56,831 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 103 predicate places. [2023-11-17 15:57:56,831 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 176 transitions, 2563 flow [2023-11-17 15:57:56,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:56,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:56,832 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] [2023-11-17 15:57:56,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 15:57:56,832 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 1 more)] === [2023-11-17 15:57:56,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2075847479, now seen corresponding path program 6 times [2023-11-17 15:57:56,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:56,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840050600] [2023-11-17 15:57:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:56,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:56,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:56,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840050600] [2023-11-17 15:57:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840050600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:56,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:56,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220865345] [2023-11-17 15:57:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:56,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:56,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:56,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 176 transitions, 2563 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:56,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:56,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:56,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:58,260 INFO L124 PetriNetUnfolderBase]: 7323/10918 cut-off events. [2023-11-17 15:57:58,261 INFO L125 PetriNetUnfolderBase]: For 96470/96470 co-relation queries the response was YES. [2023-11-17 15:57:58,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48487 conditions, 10918 events. 7323/10918 cut-off events. For 96470/96470 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 64059 event pairs, 2139 based on Foata normal form. 1/9775 useless extension candidates. Maximal degree in co-relation 47539. Up to 5593 conditions per place. [2023-11-17 15:57:58,329 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 164 selfloop transitions, 47 changer transitions 7/219 dead transitions. [2023-11-17 15:57:58,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 219 transitions, 3188 flow [2023-11-17 15:57:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1457 transitions. [2023-11-17 15:57:58,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538940809968847 [2023-11-17 15:57:58,331 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1457 transitions. [2023-11-17 15:57:58,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1457 transitions. [2023-11-17 15:57:58,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:58,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1457 transitions. [2023-11-17 15:57:58,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.4) internal successors, (1457), 5 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:58,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:58,334 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:58,334 INFO L175 Difference]: Start difference. First operand has 141 places, 176 transitions, 2563 flow. Second operand 5 states and 1457 transitions. [2023-11-17 15:57:58,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 219 transitions, 3188 flow [2023-11-17 15:57:58,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 219 transitions, 3167 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:58,768 INFO L231 Difference]: Finished difference. Result has 145 places, 170 transitions, 2553 flow [2023-11-17 15:57:58,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2553, PETRI_PLACES=145, PETRI_TRANSITIONS=170} [2023-11-17 15:57:58,769 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 107 predicate places. [2023-11-17 15:57:58,769 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 170 transitions, 2553 flow [2023-11-17 15:57:58,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:58,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:58,769 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] [2023-11-17 15:57:58,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 15:57:58,770 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 1 more)] === [2023-11-17 15:57:58,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:58,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1810732629, now seen corresponding path program 1 times [2023-11-17 15:57:58,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:58,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73421983] [2023-11-17 15:57:58,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:58,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:58,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73421983] [2023-11-17 15:57:58,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73421983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:58,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:58,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:58,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886382618] [2023-11-17 15:57:58,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:58,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:58,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:58,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:58,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:57:58,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 170 transitions, 2553 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:58,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:58,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:57:58,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:00,073 INFO L124 PetriNetUnfolderBase]: 7280/10825 cut-off events. [2023-11-17 15:58:00,073 INFO L125 PetriNetUnfolderBase]: For 102899/102899 co-relation queries the response was YES. [2023-11-17 15:58:00,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49129 conditions, 10825 events. 7280/10825 cut-off events. For 102899/102899 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 63300 event pairs, 3331 based on Foata normal form. 1/9686 useless extension candidates. Maximal degree in co-relation 48191. Up to 9089 conditions per place. [2023-11-17 15:58:00,139 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 177 selfloop transitions, 27 changer transitions 6/211 dead transitions. [2023-11-17 15:58:00,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 211 transitions, 3120 flow [2023-11-17 15:58:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:00,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1457 transitions. [2023-11-17 15:58:00,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538940809968847 [2023-11-17 15:58:00,141 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1457 transitions. [2023-11-17 15:58:00,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1457 transitions. [2023-11-17 15:58:00,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:00,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1457 transitions. [2023-11-17 15:58:00,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.4) internal successors, (1457), 5 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:00,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:00,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:00,145 INFO L175 Difference]: Start difference. First operand has 145 places, 170 transitions, 2553 flow. Second operand 5 states and 1457 transitions. [2023-11-17 15:58:00,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 211 transitions, 3120 flow [2023-11-17 15:58:00,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 211 transitions, 3024 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:00,560 INFO L231 Difference]: Finished difference. Result has 147 places, 165 transitions, 2450 flow [2023-11-17 15:58:00,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2450, PETRI_PLACES=147, PETRI_TRANSITIONS=165} [2023-11-17 15:58:00,561 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 109 predicate places. [2023-11-17 15:58:00,561 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 165 transitions, 2450 flow [2023-11-17 15:58:00,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:00,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:00,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:00,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 15:58:00,561 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 1 more)] === [2023-11-17 15:58:00,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:00,562 INFO L85 PathProgramCache]: Analyzing trace with hash 422861917, now seen corresponding path program 2 times [2023-11-17 15:58:00,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:00,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809309164] [2023-11-17 15:58:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:00,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:00,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809309164] [2023-11-17 15:58:00,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809309164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:00,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:00,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:00,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371196098] [2023-11-17 15:58:00,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:00,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:00,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:00,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:00,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:00,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:58:00,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 165 transitions, 2450 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:00,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:00,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:58:00,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:01,895 INFO L124 PetriNetUnfolderBase]: 7261/10810 cut-off events. [2023-11-17 15:58:01,895 INFO L125 PetriNetUnfolderBase]: For 95890/95890 co-relation queries the response was YES. [2023-11-17 15:58:01,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47340 conditions, 10810 events. 7261/10810 cut-off events. For 95890/95890 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 63768 event pairs, 1355 based on Foata normal form. 1/9701 useless extension candidates. Maximal degree in co-relation 46689. Up to 4281 conditions per place. [2023-11-17 15:58:01,954 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 207 selfloop transitions, 30 changer transitions 15/253 dead transitions. [2023-11-17 15:58:01,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 253 transitions, 3460 flow [2023-11-17 15:58:01,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:58:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:58:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1763 transitions. [2023-11-17 15:58:01,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45768431983385255 [2023-11-17 15:58:01,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1763 transitions. [2023-11-17 15:58:01,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1763 transitions. [2023-11-17 15:58:01,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:01,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1763 transitions. [2023-11-17 15:58:01,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.8333333333333) internal successors, (1763), 6 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:01,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:01,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:01,961 INFO L175 Difference]: Start difference. First operand has 147 places, 165 transitions, 2450 flow. Second operand 6 states and 1763 transitions. [2023-11-17 15:58:01,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 253 transitions, 3460 flow [2023-11-17 15:58:02,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 253 transitions, 3371 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-17 15:58:02,284 INFO L231 Difference]: Finished difference. Result has 149 places, 166 transitions, 2474 flow [2023-11-17 15:58:02,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2474, PETRI_PLACES=149, PETRI_TRANSITIONS=166} [2023-11-17 15:58:02,284 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 111 predicate places. [2023-11-17 15:58:02,284 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 166 transitions, 2474 flow [2023-11-17 15:58:02,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:02,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:02,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:02,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 15:58:02,285 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 1 more)] === [2023-11-17 15:58:02,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:02,285 INFO L85 PathProgramCache]: Analyzing trace with hash -206245135, now seen corresponding path program 3 times [2023-11-17 15:58:02,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:02,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839260280] [2023-11-17 15:58:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:02,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:02,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:02,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839260280] [2023-11-17 15:58:02,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839260280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:02,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:02,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647082312] [2023-11-17 15:58:02,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:02,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:02,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:02,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:02,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 642 [2023-11-17 15:58:02,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 166 transitions, 2474 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:02,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:02,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 642 [2023-11-17 15:58:02,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:03,552 INFO L124 PetriNetUnfolderBase]: 7208/10733 cut-off events. [2023-11-17 15:58:03,552 INFO L125 PetriNetUnfolderBase]: For 95982/95982 co-relation queries the response was YES. [2023-11-17 15:58:03,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47362 conditions, 10733 events. 7208/10733 cut-off events. For 95982/95982 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 62527 event pairs, 2129 based on Foata normal form. 1/9628 useless extension candidates. Maximal degree in co-relation 47245. Up to 5593 conditions per place. [2023-11-17 15:58:03,735 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 157 selfloop transitions, 47 changer transitions 7/212 dead transitions. [2023-11-17 15:58:03,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 212 transitions, 3102 flow [2023-11-17 15:58:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1459 transitions. [2023-11-17 15:58:03,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45451713395638627 [2023-11-17 15:58:03,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1459 transitions. [2023-11-17 15:58:03,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1459 transitions. [2023-11-17 15:58:03,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:03,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1459 transitions. [2023-11-17 15:58:03,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.8) internal successors, (1459), 5 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:03,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:03,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:03,740 INFO L175 Difference]: Start difference. First operand has 149 places, 166 transitions, 2474 flow. Second operand 5 states and 1459 transitions. [2023-11-17 15:58:03,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 212 transitions, 3102 flow [2023-11-17 15:58:04,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 212 transitions, 3084 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-17 15:58:04,132 INFO L231 Difference]: Finished difference. Result has 152 places, 161 transitions, 2475 flow [2023-11-17 15:58:04,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2475, PETRI_PLACES=152, PETRI_TRANSITIONS=161} [2023-11-17 15:58:04,133 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 114 predicate places. [2023-11-17 15:58:04,133 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 161 transitions, 2475 flow [2023-11-17 15:58:04,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:04,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:04,133 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] [2023-11-17 15:58:04,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 15:58:04,133 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:04,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:04,134 INFO L85 PathProgramCache]: Analyzing trace with hash 91385680, now seen corresponding path program 1 times [2023-11-17 15:58:04,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:04,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839575679] [2023-11-17 15:58:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:04,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:04,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:04,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839575679] [2023-11-17 15:58:04,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839575679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:04,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:04,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:04,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209660725] [2023-11-17 15:58:04,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:04,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:58:04,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:04,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:58:04,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:58:04,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 642 [2023-11-17 15:58:04,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 161 transitions, 2475 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:04,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:04,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 642 [2023-11-17 15:58:04,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:05,261 INFO L124 PetriNetUnfolderBase]: 7008/10440 cut-off events. [2023-11-17 15:58:05,261 INFO L125 PetriNetUnfolderBase]: For 103699/103699 co-relation queries the response was YES. [2023-11-17 15:58:05,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46735 conditions, 10440 events. 7008/10440 cut-off events. For 103699/103699 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 60795 event pairs, 2315 based on Foata normal form. 58/9412 useless extension candidates. Maximal degree in co-relation 46119. Up to 6339 conditions per place. [2023-11-17 15:58:05,336 INFO L140 encePairwiseOnDemand]: 637/642 looper letters, 191 selfloop transitions, 24 changer transitions 4/220 dead transitions. [2023-11-17 15:58:05,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 220 transitions, 3115 flow [2023-11-17 15:58:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1507 transitions. [2023-11-17 15:58:05,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46947040498442366 [2023-11-17 15:58:05,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1507 transitions. [2023-11-17 15:58:05,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1507 transitions. [2023-11-17 15:58:05,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:05,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1507 transitions. [2023-11-17 15:58:05,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,342 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,342 INFO L175 Difference]: Start difference. First operand has 152 places, 161 transitions, 2475 flow. Second operand 5 states and 1507 transitions. [2023-11-17 15:58:05,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 220 transitions, 3115 flow [2023-11-17 15:58:05,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 220 transitions, 2993 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:05,766 INFO L231 Difference]: Finished difference. Result has 153 places, 157 transitions, 2328 flow [2023-11-17 15:58:05,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2328, PETRI_PLACES=153, PETRI_TRANSITIONS=157} [2023-11-17 15:58:05,766 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 115 predicate places. [2023-11-17 15:58:05,767 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 157 transitions, 2328 flow [2023-11-17 15:58:05,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:05,767 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] [2023-11-17 15:58:05,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 15:58:05,767 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:05,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1166115394, now seen corresponding path program 2 times [2023-11-17 15:58:05,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:05,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358651127] [2023-11-17 15:58:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:05,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:05,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358651127] [2023-11-17 15:58:05,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358651127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:05,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:05,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:05,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118319663] [2023-11-17 15:58:05,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:05,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:58:05,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:05,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:58:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:58:05,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 642 [2023-11-17 15:58:05,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 157 transitions, 2328 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:05,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 642 [2023-11-17 15:58:05,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:06,978 INFO L124 PetriNetUnfolderBase]: 6664/9830 cut-off events. [2023-11-17 15:58:06,978 INFO L125 PetriNetUnfolderBase]: For 90135/90135 co-relation queries the response was YES. [2023-11-17 15:58:07,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43050 conditions, 9830 events. 6664/9830 cut-off events. For 90135/90135 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 55582 event pairs, 2828 based on Foata normal form. 24/8816 useless extension candidates. Maximal degree in co-relation 42510. Up to 7236 conditions per place. [2023-11-17 15:58:07,053 INFO L140 encePairwiseOnDemand]: 637/642 looper letters, 155 selfloop transitions, 29 changer transitions 8/193 dead transitions. [2023-11-17 15:58:07,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 193 transitions, 2620 flow [2023-11-17 15:58:07,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1504 transitions. [2023-11-17 15:58:07,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685358255451713 [2023-11-17 15:58:07,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1504 transitions. [2023-11-17 15:58:07,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1504 transitions. [2023-11-17 15:58:07,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:07,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1504 transitions. [2023-11-17 15:58:07,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,059 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,059 INFO L175 Difference]: Start difference. First operand has 153 places, 157 transitions, 2328 flow. Second operand 5 states and 1504 transitions. [2023-11-17 15:58:07,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 193 transitions, 2620 flow [2023-11-17 15:58:07,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 193 transitions, 2521 flow, removed 25 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:07,465 INFO L231 Difference]: Finished difference. Result has 143 places, 131 transitions, 1906 flow [2023-11-17 15:58:07,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1906, PETRI_PLACES=143, PETRI_TRANSITIONS=131} [2023-11-17 15:58:07,465 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2023-11-17 15:58:07,465 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 131 transitions, 1906 flow [2023-11-17 15:58:07,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:07,466 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] [2023-11-17 15:58:07,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 15:58:07,466 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:07,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash 257679798, now seen corresponding path program 3 times [2023-11-17 15:58:07,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:07,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442660069] [2023-11-17 15:58:07,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:07,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:07,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:07,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442660069] [2023-11-17 15:58:07,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442660069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:07,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:07,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287288833] [2023-11-17 15:58:07,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:07,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:07,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 642 [2023-11-17 15:58:07,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 1906 flow. Second operand has 5 states, 5 states have (on average 281.4) internal successors, (1407), 5 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:07,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:07,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 642 [2023-11-17 15:58:07,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:08,594 INFO L124 PetriNetUnfolderBase]: 6614/9761 cut-off events. [2023-11-17 15:58:08,594 INFO L125 PetriNetUnfolderBase]: For 82044/82044 co-relation queries the response was YES. [2023-11-17 15:58:08,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40777 conditions, 9761 events. 6614/9761 cut-off events. For 82044/82044 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 55344 event pairs, 1237 based on Foata normal form. 1/8724 useless extension candidates. Maximal degree in co-relation 40240. Up to 6489 conditions per place. [2023-11-17 15:58:08,655 INFO L140 encePairwiseOnDemand]: 638/642 looper letters, 142 selfloop transitions, 15 changer transitions 19/177 dead transitions. [2023-11-17 15:58:08,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 177 transitions, 2406 flow [2023-11-17 15:58:08,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1475 transitions. [2023-11-17 15:58:08,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45950155763239875 [2023-11-17 15:58:08,657 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1475 transitions. [2023-11-17 15:58:08,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1475 transitions. [2023-11-17 15:58:08,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:08,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1475 transitions. [2023-11-17 15:58:08,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,660 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 1906 flow. Second operand 5 states and 1475 transitions. [2023-11-17 15:58:08,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 177 transitions, 2406 flow [2023-11-17 15:58:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 177 transitions, 2290 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-11-17 15:58:08,941 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 1744 flow [2023-11-17 15:58:08,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1744, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2023-11-17 15:58:08,942 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 99 predicate places. [2023-11-17 15:58:08,942 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 1744 flow [2023-11-17 15:58:08,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 281.4) internal successors, (1407), 5 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:08,942 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] [2023-11-17 15:58:08,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 15:58:08,942 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:08,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:08,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1132587590, now seen corresponding path program 4 times [2023-11-17 15:58:08,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:08,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120469430] [2023-11-17 15:58:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:08,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:09,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:09,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120469430] [2023-11-17 15:58:09,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120469430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:09,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:09,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:09,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262947256] [2023-11-17 15:58:09,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:09,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:09,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:09,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:09,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 642 [2023-11-17 15:58:09,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 1744 flow. Second operand has 5 states, 5 states have (on average 281.4) internal successors, (1407), 5 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:09,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 642 [2023-11-17 15:58:09,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:10,213 INFO L124 PetriNetUnfolderBase]: 7612/11064 cut-off events. [2023-11-17 15:58:10,213 INFO L125 PetriNetUnfolderBase]: For 85141/85141 co-relation queries the response was YES. [2023-11-17 15:58:10,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45238 conditions, 11064 events. 7612/11064 cut-off events. For 85141/85141 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 62282 event pairs, 872 based on Foata normal form. 2/9848 useless extension candidates. Maximal degree in co-relation 45140. Up to 7127 conditions per place. [2023-11-17 15:58:10,265 INFO L140 encePairwiseOnDemand]: 637/642 looper letters, 153 selfloop transitions, 24 changer transitions 18/196 dead transitions. [2023-11-17 15:58:10,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 196 transitions, 2504 flow [2023-11-17 15:58:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:58:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:58:10,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1771 transitions. [2023-11-17 15:58:10,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45976116303219106 [2023-11-17 15:58:10,267 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1771 transitions. [2023-11-17 15:58:10,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1771 transitions. [2023-11-17 15:58:10,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:10,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1771 transitions. [2023-11-17 15:58:10,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 295.1666666666667) internal successors, (1771), 6 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,271 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,271 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 1744 flow. Second operand 6 states and 1771 transitions. [2023-11-17 15:58:10,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 196 transitions, 2504 flow [2023-11-17 15:58:10,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 196 transitions, 2366 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:10,548 INFO L231 Difference]: Finished difference. Result has 136 places, 130 transitions, 1776 flow [2023-11-17 15:58:10,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1776, PETRI_PLACES=136, PETRI_TRANSITIONS=130} [2023-11-17 15:58:10,549 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 98 predicate places. [2023-11-17 15:58:10,549 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 130 transitions, 1776 flow [2023-11-17 15:58:10,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 281.4) internal successors, (1407), 5 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:10,549 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] [2023-11-17 15:58:10,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 15:58:10,550 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:10,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:10,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1034632646, now seen corresponding path program 5 times [2023-11-17 15:58:10,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:10,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250252608] [2023-11-17 15:58:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:10,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:10,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250252608] [2023-11-17 15:58:10,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250252608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:10,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:10,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:10,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294340592] [2023-11-17 15:58:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:10,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:10,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:10,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:10,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:10,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 642 [2023-11-17 15:58:10,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 130 transitions, 1776 flow. Second operand has 5 states, 5 states have (on average 281.4) internal successors, (1407), 5 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:10,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 642 [2023-11-17 15:58:10,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:11,795 INFO L124 PetriNetUnfolderBase]: 7500/10975 cut-off events. [2023-11-17 15:58:11,795 INFO L125 PetriNetUnfolderBase]: For 79067/79067 co-relation queries the response was YES. [2023-11-17 15:58:11,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45483 conditions, 10975 events. 7500/10975 cut-off events. For 79067/79067 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 62378 event pairs, 680 based on Foata normal form. 1/9762 useless extension candidates. Maximal degree in co-relation 45386. Up to 8198 conditions per place. [2023-11-17 15:58:11,873 INFO L140 encePairwiseOnDemand]: 637/642 looper letters, 142 selfloop transitions, 26 changer transitions 18/187 dead transitions. [2023-11-17 15:58:11,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 187 transitions, 2381 flow [2023-11-17 15:58:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:58:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:58:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1769 transitions. [2023-11-17 15:58:11,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45924195223260644 [2023-11-17 15:58:11,876 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1769 transitions. [2023-11-17 15:58:11,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1769 transitions. [2023-11-17 15:58:11,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:11,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1769 transitions. [2023-11-17 15:58:11,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.8333333333333) internal successors, (1769), 6 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:11,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:11,880 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:11,880 INFO L175 Difference]: Start difference. First operand has 136 places, 130 transitions, 1776 flow. Second operand 6 states and 1769 transitions. [2023-11-17 15:58:11,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 187 transitions, 2381 flow [2023-11-17 15:58:12,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 187 transitions, 2344 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:12,226 INFO L231 Difference]: Finished difference. Result has 138 places, 126 transitions, 1736 flow [2023-11-17 15:58:12,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1736, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2023-11-17 15:58:12,226 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 100 predicate places. [2023-11-17 15:58:12,226 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 1736 flow [2023-11-17 15:58:12,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 281.4) internal successors, (1407), 5 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:12,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:12,227 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] [2023-11-17 15:58:12,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-17 15:58:12,227 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:12,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash 760807378, now seen corresponding path program 6 times [2023-11-17 15:58:12,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:12,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589673833] [2023-11-17 15:58:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:12,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589673833] [2023-11-17 15:58:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589673833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:12,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:12,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:12,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285102172] [2023-11-17 15:58:12,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:12,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:12,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:12,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:12,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 642 [2023-11-17 15:58:12,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 1736 flow. Second operand has 5 states, 5 states have (on average 281.4) internal successors, (1407), 5 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:12,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:12,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 642 [2023-11-17 15:58:12,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:13,349 INFO L124 PetriNetUnfolderBase]: 7326/10806 cut-off events. [2023-11-17 15:58:13,349 INFO L125 PetriNetUnfolderBase]: For 82650/82650 co-relation queries the response was YES. [2023-11-17 15:58:13,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45193 conditions, 10806 events. 7326/10806 cut-off events. For 82650/82650 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 61748 event pairs, 2417 based on Foata normal form. 2/9618 useless extension candidates. Maximal degree in co-relation 45102. Up to 5265 conditions per place. [2023-11-17 15:58:13,422 INFO L140 encePairwiseOnDemand]: 638/642 looper letters, 123 selfloop transitions, 7 changer transitions 29/160 dead transitions. [2023-11-17 15:58:13,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 160 transitions, 2161 flow [2023-11-17 15:58:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1464 transitions. [2023-11-17 15:58:13,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45607476635514016 [2023-11-17 15:58:13,424 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1464 transitions. [2023-11-17 15:58:13,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1464 transitions. [2023-11-17 15:58:13,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:13,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1464 transitions. [2023-11-17 15:58:13,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.8) internal successors, (1464), 5 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,427 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,427 INFO L175 Difference]: Start difference. First operand has 138 places, 126 transitions, 1736 flow. Second operand 5 states and 1464 transitions. [2023-11-17 15:58:13,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 160 transitions, 2161 flow [2023-11-17 15:58:13,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 160 transitions, 2081 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:13,688 INFO L231 Difference]: Finished difference. Result has 135 places, 111 transitions, 1467 flow [2023-11-17 15:58:13,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1467, PETRI_PLACES=135, PETRI_TRANSITIONS=111} [2023-11-17 15:58:13,688 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 97 predicate places. [2023-11-17 15:58:13,688 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 111 transitions, 1467 flow [2023-11-17 15:58:13,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 281.4) internal successors, (1407), 5 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:13,689 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] [2023-11-17 15:58:13,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 15:58:13,689 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:13,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1172022494, now seen corresponding path program 1 times [2023-11-17 15:58:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918819515] [2023-11-17 15:58:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:13,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:13,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918819515] [2023-11-17 15:58:13,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918819515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:13,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371152562] [2023-11-17 15:58:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:13,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:13,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:13,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:13,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:58:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:14,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:58:14,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:14,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:14,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371152562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:14,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:14,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-17 15:58:14,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532355983] [2023-11-17 15:58:14,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:14,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:58:14,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:14,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:58:14,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:58:14,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 642 [2023-11-17 15:58:14,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 111 transitions, 1467 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:14,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:14,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 642 [2023-11-17 15:58:14,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:15,006 INFO L124 PetriNetUnfolderBase]: 6421/9255 cut-off events. [2023-11-17 15:58:15,006 INFO L125 PetriNetUnfolderBase]: For 69290/69290 co-relation queries the response was YES. [2023-11-17 15:58:15,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39597 conditions, 9255 events. 6421/9255 cut-off events. For 69290/69290 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 49929 event pairs, 1116 based on Foata normal form. 102/8335 useless extension candidates. Maximal degree in co-relation 39555. Up to 6001 conditions per place. [2023-11-17 15:58:15,073 INFO L140 encePairwiseOnDemand]: 637/642 looper letters, 120 selfloop transitions, 21 changer transitions 7/149 dead transitions. [2023-11-17 15:58:15,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 149 transitions, 1827 flow [2023-11-17 15:58:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1489 transitions. [2023-11-17 15:58:15,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46386292834890963 [2023-11-17 15:58:15,075 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1489 transitions. [2023-11-17 15:58:15,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1489 transitions. [2023-11-17 15:58:15,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:15,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1489 transitions. [2023-11-17 15:58:15,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.8) internal successors, (1489), 5 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,080 INFO L175 Difference]: Start difference. First operand has 135 places, 111 transitions, 1467 flow. Second operand 5 states and 1489 transitions. [2023-11-17 15:58:15,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 149 transitions, 1827 flow [2023-11-17 15:58:15,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 149 transitions, 1683 flow, removed 36 selfloop flow, removed 9 redundant places. [2023-11-17 15:58:15,270 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 1208 flow [2023-11-17 15:58:15,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1208, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2023-11-17 15:58:15,270 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 79 predicate places. [2023-11-17 15:58:15,270 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 1208 flow [2023-11-17 15:58:15,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:15,271 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] [2023-11-17 15:58:15,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 15:58:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-17 15:58:15,472 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:15,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1616304630, now seen corresponding path program 2 times [2023-11-17 15:58:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:15,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510978480] [2023-11-17 15:58:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:15,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:15,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:15,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510978480] [2023-11-17 15:58:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510978480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:15,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:15,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:15,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076919660] [2023-11-17 15:58:15,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:15,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:58:15,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:58:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:58:15,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 642 [2023-11-17 15:58:15,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 1208 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:15,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 642 [2023-11-17 15:58:15,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:16,402 INFO L124 PetriNetUnfolderBase]: 6056/8796 cut-off events. [2023-11-17 15:58:16,402 INFO L125 PetriNetUnfolderBase]: For 46509/46509 co-relation queries the response was YES. [2023-11-17 15:58:16,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34666 conditions, 8796 events. 6056/8796 cut-off events. For 46509/46509 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 47455 event pairs, 1100 based on Foata normal form. 80/7862 useless extension candidates. Maximal degree in co-relation 34631. Up to 7384 conditions per place. [2023-11-17 15:58:16,455 INFO L140 encePairwiseOnDemand]: 638/642 looper letters, 107 selfloop transitions, 14 changer transitions 0/122 dead transitions. [2023-11-17 15:58:16,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 122 transitions, 1452 flow [2023-11-17 15:58:16,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:58:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:58:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1192 transitions. [2023-11-17 15:58:16,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46417445482866043 [2023-11-17 15:58:16,456 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1192 transitions. [2023-11-17 15:58:16,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1192 transitions. [2023-11-17 15:58:16,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:16,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1192 transitions. [2023-11-17 15:58:16,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,459 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,459 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 1208 flow. Second operand 4 states and 1192 transitions. [2023-11-17 15:58:16,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 122 transitions, 1452 flow [2023-11-17 15:58:16,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 1415 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:16,562 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 1146 flow [2023-11-17 15:58:16,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1146, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2023-11-17 15:58:16,562 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 78 predicate places. [2023-11-17 15:58:16,563 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 1146 flow [2023-11-17 15:58:16,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:16,563 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] [2023-11-17 15:58:16,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-17 15:58:16,563 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:16,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash 250243724, now seen corresponding path program 3 times [2023-11-17 15:58:16,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:16,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465380321] [2023-11-17 15:58:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:16,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:16,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:16,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465380321] [2023-11-17 15:58:16,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465380321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:16,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741563001] [2023-11-17 15:58:16,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:16,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:16,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:16,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:16,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:58:16,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 15:58:16,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:16,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:58:16,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:16,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:16,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741563001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:16,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:16,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-17 15:58:16,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669266590] [2023-11-17 15:58:16,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:16,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:58:16,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:16,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:58:16,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:58:16,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 642 [2023-11-17 15:58:16,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 1146 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:16,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:16,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 642 [2023-11-17 15:58:16,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:17,695 INFO L124 PetriNetUnfolderBase]: 5964/8646 cut-off events. [2023-11-17 15:58:17,696 INFO L125 PetriNetUnfolderBase]: For 48471/48471 co-relation queries the response was YES. [2023-11-17 15:58:17,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33378 conditions, 8646 events. 5964/8646 cut-off events. For 48471/48471 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 46012 event pairs, 2313 based on Foata normal form. 22/7650 useless extension candidates. Maximal degree in co-relation 33343. Up to 6237 conditions per place. [2023-11-17 15:58:17,738 INFO L140 encePairwiseOnDemand]: 638/642 looper letters, 136 selfloop transitions, 13 changer transitions 7/157 dead transitions. [2023-11-17 15:58:17,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 157 transitions, 1606 flow [2023-11-17 15:58:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1502 transitions. [2023-11-17 15:58:17,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46791277258566977 [2023-11-17 15:58:17,740 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1502 transitions. [2023-11-17 15:58:17,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1502 transitions. [2023-11-17 15:58:17,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:17,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1502 transitions. [2023-11-17 15:58:17,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.4) internal successors, (1502), 5 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,743 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 1146 flow. Second operand 5 states and 1502 transitions. [2023-11-17 15:58:17,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 157 transitions, 1606 flow [2023-11-17 15:58:17,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 157 transitions, 1585 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:17,834 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 1051 flow [2023-11-17 15:58:17,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1051, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2023-11-17 15:58:17,834 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2023-11-17 15:58:17,834 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 1051 flow [2023-11-17 15:58:17,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:17,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:17,834 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] [2023-11-17 15:58:17,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:18,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-17 15:58:18,035 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:18,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash 639077002, now seen corresponding path program 4 times [2023-11-17 15:58:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:18,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391599555] [2023-11-17 15:58:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:18,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:18,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391599555] [2023-11-17 15:58:18,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391599555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:18,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880783114] [2023-11-17 15:58:18,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:18,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:18,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:18,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:18,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:58:18,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:18,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:18,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:58:18,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:18,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:18,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880783114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:18,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:18,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-17 15:58:18,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95717794] [2023-11-17 15:58:18,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:18,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:58:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:18,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:58:18,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:58:18,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 642 [2023-11-17 15:58:18,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 1051 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:18,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 642 [2023-11-17 15:58:18,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:18,998 INFO L124 PetriNetUnfolderBase]: 5291/7651 cut-off events. [2023-11-17 15:58:18,998 INFO L125 PetriNetUnfolderBase]: For 44348/44348 co-relation queries the response was YES. [2023-11-17 15:58:19,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28834 conditions, 7651 events. 5291/7651 cut-off events. For 44348/44348 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 39625 event pairs, 378 based on Foata normal form. 262/7011 useless extension candidates. Maximal degree in co-relation 28800. Up to 5196 conditions per place. [2023-11-17 15:58:19,040 INFO L140 encePairwiseOnDemand]: 637/642 looper letters, 117 selfloop transitions, 16 changer transitions 0/134 dead transitions. [2023-11-17 15:58:19,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 134 transitions, 1359 flow [2023-11-17 15:58:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:58:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:58:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1493 transitions. [2023-11-17 15:58:19,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651090342679128 [2023-11-17 15:58:19,043 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1493 transitions. [2023-11-17 15:58:19,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1493 transitions. [2023-11-17 15:58:19,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:19,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1493 transitions. [2023-11-17 15:58:19,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.6) internal successors, (1493), 5 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,047 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,047 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 1051 flow. Second operand 5 states and 1493 transitions. [2023-11-17 15:58:19,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 134 transitions, 1359 flow [2023-11-17 15:58:19,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 134 transitions, 1282 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:19,172 INFO L231 Difference]: Finished difference. Result has 110 places, 89 transitions, 911 flow [2023-11-17 15:58:19,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=110, PETRI_TRANSITIONS=89} [2023-11-17 15:58:19,172 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 72 predicate places. [2023-11-17 15:58:19,172 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 89 transitions, 911 flow [2023-11-17 15:58:19,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:19,172 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] [2023-11-17 15:58:19,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:19,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:19,373 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:19,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:19,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1282823610, now seen corresponding path program 5 times [2023-11-17 15:58:19,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:19,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550387292] [2023-11-17 15:58:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:19,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:19,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:19,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550387292] [2023-11-17 15:58:19,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550387292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:19,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974421578] [2023-11-17 15:58:19,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:19,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:19,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:19,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:19,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:58:19,714 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:19,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:19,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:58:19,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:19,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:19,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974421578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:19,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:19,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-17 15:58:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493511931] [2023-11-17 15:58:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:19,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:58:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:58:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:58:19,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 642 [2023-11-17 15:58:19,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 89 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:19,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 642 [2023-11-17 15:58:19,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:20,436 INFO L124 PetriNetUnfolderBase]: 5200/7550 cut-off events. [2023-11-17 15:58:20,436 INFO L125 PetriNetUnfolderBase]: For 32726/32726 co-relation queries the response was YES. [2023-11-17 15:58:20,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27912 conditions, 7550 events. 5200/7550 cut-off events. For 32726/32726 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 39147 event pairs, 1548 based on Foata normal form. 8/6640 useless extension candidates. Maximal degree in co-relation 27880. Up to 3965 conditions per place. [2023-11-17 15:58:20,470 INFO L140 encePairwiseOnDemand]: 639/642 looper letters, 88 selfloop transitions, 5 changer transitions 7/101 dead transitions. [2023-11-17 15:58:20,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 101 transitions, 1057 flow [2023-11-17 15:58:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:58:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:58:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1185 transitions. [2023-11-17 15:58:20,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614485981308411 [2023-11-17 15:58:20,471 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1185 transitions. [2023-11-17 15:58:20,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1185 transitions. [2023-11-17 15:58:20,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:20,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1185 transitions. [2023-11-17 15:58:20,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,474 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,474 INFO L175 Difference]: Start difference. First operand has 110 places, 89 transitions, 911 flow. Second operand 4 states and 1185 transitions. [2023-11-17 15:58:20,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 101 transitions, 1057 flow [2023-11-17 15:58:20,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 992 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-17 15:58:20,553 INFO L231 Difference]: Finished difference. Result has 103 places, 74 transitions, 673 flow [2023-11-17 15:58:20,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=673, PETRI_PLACES=103, PETRI_TRANSITIONS=74} [2023-11-17 15:58:20,554 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2023-11-17 15:58:20,554 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 74 transitions, 673 flow [2023-11-17 15:58:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:20,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:20,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:20,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:20,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-17 15:58:20,755 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:20,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash 568981873, now seen corresponding path program 1 times [2023-11-17 15:58:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:20,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376017040] [2023-11-17 15:58:20,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:20,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:20,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376017040] [2023-11-17 15:58:20,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376017040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137079204] [2023-11-17 15:58:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:20,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:20,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:20,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:20,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:58:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:21,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 15:58:21,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:21,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:58:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137079204] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:21,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:58:21,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-11-17 15:58:21,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404706875] [2023-11-17 15:58:21,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:21,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:58:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:21,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:58:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:21,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 642 [2023-11-17 15:58:21,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 74 transitions, 673 flow. Second operand has 7 states, 7 states have (on average 237.28571428571428) internal successors, (1661), 7 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:21,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 642 [2023-11-17 15:58:21,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:22,143 INFO L124 PetriNetUnfolderBase]: 6121/9036 cut-off events. [2023-11-17 15:58:22,144 INFO L125 PetriNetUnfolderBase]: For 38938/38938 co-relation queries the response was YES. [2023-11-17 15:58:22,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32462 conditions, 9036 events. 6121/9036 cut-off events. For 38938/38938 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 51316 event pairs, 1739 based on Foata normal form. 104/8128 useless extension candidates. Maximal degree in co-relation 32434. Up to 2171 conditions per place. [2023-11-17 15:58:22,192 INFO L140 encePairwiseOnDemand]: 632/642 looper letters, 232 selfloop transitions, 25 changer transitions 0/258 dead transitions. [2023-11-17 15:58:22,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 258 transitions, 2988 flow [2023-11-17 15:58:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:58:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:58:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2254 transitions. [2023-11-17 15:58:22,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39010038075458636 [2023-11-17 15:58:22,196 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2254 transitions. [2023-11-17 15:58:22,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2254 transitions. [2023-11-17 15:58:22,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:22,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2254 transitions. [2023-11-17 15:58:22,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.44444444444446) internal successors, (2254), 9 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,203 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,203 INFO L175 Difference]: Start difference. First operand has 103 places, 74 transitions, 673 flow. Second operand 9 states and 2254 transitions. [2023-11-17 15:58:22,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 258 transitions, 2988 flow [2023-11-17 15:58:22,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 258 transitions, 2784 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-17 15:58:22,300 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 905 flow [2023-11-17 15:58:22,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=905, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2023-11-17 15:58:22,300 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2023-11-17 15:58:22,300 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 905 flow [2023-11-17 15:58:22,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.28571428571428) internal successors, (1661), 7 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:22,301 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] [2023-11-17 15:58:22,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:22,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-17 15:58:22,505 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:22,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:22,505 INFO L85 PathProgramCache]: Analyzing trace with hash 287075843, now seen corresponding path program 1 times [2023-11-17 15:58:22,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:22,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584595898] [2023-11-17 15:58:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:22,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:22,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:22,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584595898] [2023-11-17 15:58:22,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584595898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:22,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:22,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:22,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730351910] [2023-11-17 15:58:22,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:22,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:22,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 642 [2023-11-17 15:58:22,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 905 flow. Second operand has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:22,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:22,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 642 [2023-11-17 15:58:22,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:23,071 INFO L124 PetriNetUnfolderBase]: 3942/5909 cut-off events. [2023-11-17 15:58:23,071 INFO L125 PetriNetUnfolderBase]: For 24057/24057 co-relation queries the response was YES. [2023-11-17 15:58:23,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22835 conditions, 5909 events. 3942/5909 cut-off events. For 24057/24057 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31346 event pairs, 2145 based on Foata normal form. 186/5696 useless extension candidates. Maximal degree in co-relation 22808. Up to 4890 conditions per place. [2023-11-17 15:58:23,148 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 80 selfloop transitions, 2 changer transitions 67/150 dead transitions. [2023-11-17 15:58:23,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 150 transitions, 1762 flow [2023-11-17 15:58:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:58:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:58:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1519 transitions. [2023-11-17 15:58:23,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943406022845275 [2023-11-17 15:58:23,150 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1519 transitions. [2023-11-17 15:58:23,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1519 transitions. [2023-11-17 15:58:23,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:23,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1519 transitions. [2023-11-17 15:58:23,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.16666666666666) internal successors, (1519), 6 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,153 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,153 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 905 flow. Second operand 6 states and 1519 transitions. [2023-11-17 15:58:23,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 150 transitions, 1762 flow [2023-11-17 15:58:23,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 150 transitions, 1755 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:58:23,200 INFO L231 Difference]: Finished difference. Result has 107 places, 83 transitions, 876 flow [2023-11-17 15:58:23,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=876, PETRI_PLACES=107, PETRI_TRANSITIONS=83} [2023-11-17 15:58:23,200 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 69 predicate places. [2023-11-17 15:58:23,200 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 83 transitions, 876 flow [2023-11-17 15:58:23,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:23,201 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] [2023-11-17 15:58:23,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-17 15:58:23,201 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:23,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:23,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1116766539, now seen corresponding path program 1 times [2023-11-17 15:58:23,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:23,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893452693] [2023-11-17 15:58:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:23,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:23,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893452693] [2023-11-17 15:58:23,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893452693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:23,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:23,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:58:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314708588] [2023-11-17 15:58:23,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:23,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:58:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:58:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:58:23,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 642 [2023-11-17 15:58:23,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 83 transitions, 876 flow. Second operand has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:23,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 642 [2023-11-17 15:58:23,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:23,670 INFO L124 PetriNetUnfolderBase]: 2628/3861 cut-off events. [2023-11-17 15:58:23,670 INFO L125 PetriNetUnfolderBase]: For 14827/14827 co-relation queries the response was YES. [2023-11-17 15:58:23,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15258 conditions, 3861 events. 2628/3861 cut-off events. For 14827/14827 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 18013 event pairs, 1443 based on Foata normal form. 144/3837 useless extension candidates. Maximal degree in co-relation 15229. Up to 3212 conditions per place. [2023-11-17 15:58:23,688 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 64 selfloop transitions, 2 changer transitions 63/129 dead transitions. [2023-11-17 15:58:23,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 129 transitions, 1515 flow [2023-11-17 15:58:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:58:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:58:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1519 transitions. [2023-11-17 15:58:23,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943406022845275 [2023-11-17 15:58:23,690 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1519 transitions. [2023-11-17 15:58:23,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1519 transitions. [2023-11-17 15:58:23,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:23,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1519 transitions. [2023-11-17 15:58:23,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.16666666666666) internal successors, (1519), 6 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,694 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,694 INFO L175 Difference]: Start difference. First operand has 107 places, 83 transitions, 876 flow. Second operand 6 states and 1519 transitions. [2023-11-17 15:58:23,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 129 transitions, 1515 flow [2023-11-17 15:58:23,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 129 transitions, 1464 flow, removed 17 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:23,735 INFO L231 Difference]: Finished difference. Result has 101 places, 66 transitions, 644 flow [2023-11-17 15:58:23,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=644, PETRI_PLACES=101, PETRI_TRANSITIONS=66} [2023-11-17 15:58:23,735 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2023-11-17 15:58:23,735 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 66 transitions, 644 flow [2023-11-17 15:58:23,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:23,736 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] [2023-11-17 15:58:23,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-17 15:58:23,736 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:23,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:23,736 INFO L85 PathProgramCache]: Analyzing trace with hash -24165348, now seen corresponding path program 1 times [2023-11-17 15:58:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:23,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326544864] [2023-11-17 15:58:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:23,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:58:23,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:23,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326544864] [2023-11-17 15:58:23,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326544864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:23,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:58:23,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:58:23,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775690099] [2023-11-17 15:58:23,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:23,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:58:23,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:23,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:58:23,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:58:23,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 642 [2023-11-17 15:58:23,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 66 transitions, 644 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:23,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:23,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 642 [2023-11-17 15:58:23,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:24,077 INFO L124 PetriNetUnfolderBase]: 1711/2517 cut-off events. [2023-11-17 15:58:24,077 INFO L125 PetriNetUnfolderBase]: For 9256/9256 co-relation queries the response was YES. [2023-11-17 15:58:24,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9774 conditions, 2517 events. 1711/2517 cut-off events. For 9256/9256 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11200 event pairs, 170 based on Foata normal form. 58/2419 useless extension candidates. Maximal degree in co-relation 9747. Up to 1806 conditions per place. [2023-11-17 15:58:24,088 INFO L140 encePairwiseOnDemand]: 638/642 looper letters, 87 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2023-11-17 15:58:24,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 926 flow [2023-11-17 15:58:24,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:58:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:58:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1196 transitions. [2023-11-17 15:58:24,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657320872274143 [2023-11-17 15:58:24,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1196 transitions. [2023-11-17 15:58:24,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1196 transitions. [2023-11-17 15:58:24,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:24,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1196 transitions. [2023-11-17 15:58:24,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,093 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,093 INFO L175 Difference]: Start difference. First operand has 101 places, 66 transitions, 644 flow. Second operand 4 states and 1196 transitions. [2023-11-17 15:58:24,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 926 flow [2023-11-17 15:58:24,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 96 transitions, 854 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-11-17 15:58:24,112 INFO L231 Difference]: Finished difference. Result has 90 places, 65 transitions, 587 flow [2023-11-17 15:58:24,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=587, PETRI_PLACES=90, PETRI_TRANSITIONS=65} [2023-11-17 15:58:24,112 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 52 predicate places. [2023-11-17 15:58:24,112 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 65 transitions, 587 flow [2023-11-17 15:58:24,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:24,113 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] [2023-11-17 15:58:24,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-17 15:58:24,113 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:24,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash -720402838, now seen corresponding path program 2 times [2023-11-17 15:58:24,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:24,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649159166] [2023-11-17 15:58:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:24,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:24,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:24,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649159166] [2023-11-17 15:58:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649159166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:24,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131079730] [2023-11-17 15:58:24,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:24,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:24,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:24,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:24,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:58:24,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:58:24,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:24,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:58:24,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:58:24,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:24,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131079730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:24,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:24,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-11-17 15:58:24,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344875616] [2023-11-17 15:58:24,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:24,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:58:24,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:24,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:58:24,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:58:24,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 642 [2023-11-17 15:58:24,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 65 transitions, 587 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:24,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 642 [2023-11-17 15:58:24,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:24,682 INFO L124 PetriNetUnfolderBase]: 1601/2369 cut-off events. [2023-11-17 15:58:24,682 INFO L125 PetriNetUnfolderBase]: For 7551/7551 co-relation queries the response was YES. [2023-11-17 15:58:24,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8899 conditions, 2369 events. 1601/2369 cut-off events. For 7551/7551 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10402 event pairs, 324 based on Foata normal form. 8/2227 useless extension candidates. Maximal degree in co-relation 8877. Up to 1990 conditions per place. [2023-11-17 15:58:24,696 INFO L140 encePairwiseOnDemand]: 639/642 looper letters, 67 selfloop transitions, 8 changer transitions 7/83 dead transitions. [2023-11-17 15:58:24,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 787 flow [2023-11-17 15:58:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:58:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:58:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1182 transitions. [2023-11-17 15:58:24,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602803738317757 [2023-11-17 15:58:24,699 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1182 transitions. [2023-11-17 15:58:24,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1182 transitions. [2023-11-17 15:58:24,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:24,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1182 transitions. [2023-11-17 15:58:24,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 295.5) internal successors, (1182), 4 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,703 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,703 INFO L175 Difference]: Start difference. First operand has 90 places, 65 transitions, 587 flow. Second operand 4 states and 1182 transitions. [2023-11-17 15:58:24,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 787 flow [2023-11-17 15:58:24,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 778 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:58:24,717 INFO L231 Difference]: Finished difference. Result has 88 places, 63 transitions, 555 flow [2023-11-17 15:58:24,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=555, PETRI_PLACES=88, PETRI_TRANSITIONS=63} [2023-11-17 15:58:24,718 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 50 predicate places. [2023-11-17 15:58:24,718 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 63 transitions, 555 flow [2023-11-17 15:58:24,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:24,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:24,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:24,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:24,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:24,919 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:24,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1190596231, now seen corresponding path program 1 times [2023-11-17 15:58:24,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:24,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585838987] [2023-11-17 15:58:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:24,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:58:25,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:25,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585838987] [2023-11-17 15:58:25,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585838987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940703266] [2023-11-17 15:58:25,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:25,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:25,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:25,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:25,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:58:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:25,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-17 15:58:25,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:25,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:25,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940703266] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:25,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:25,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 21 [2023-11-17 15:58:25,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560582965] [2023-11-17 15:58:25,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:25,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 15:58:25,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 15:58:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2023-11-17 15:58:25,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 642 [2023-11-17 15:58:25,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 63 transitions, 555 flow. Second operand has 23 states, 23 states have (on average 212.3913043478261) internal successors, (4885), 23 states have internal predecessors, (4885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:25,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:25,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 642 [2023-11-17 15:58:25,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:28,269 INFO L124 PetriNetUnfolderBase]: 6846/10320 cut-off events. [2023-11-17 15:58:28,269 INFO L125 PetriNetUnfolderBase]: For 30980/30980 co-relation queries the response was YES. [2023-11-17 15:58:28,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39268 conditions, 10320 events. 6846/10320 cut-off events. For 30980/30980 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 60888 event pairs, 1294 based on Foata normal form. 262/9923 useless extension candidates. Maximal degree in co-relation 39246. Up to 1678 conditions per place. [2023-11-17 15:58:28,330 INFO L140 encePairwiseOnDemand]: 625/642 looper letters, 179 selfloop transitions, 36 changer transitions 446/662 dead transitions. [2023-11-17 15:58:28,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 662 transitions, 5948 flow [2023-11-17 15:58:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-17 15:58:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-17 15:58:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10762 transitions. [2023-11-17 15:58:28,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3421069362324369 [2023-11-17 15:58:28,341 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10762 transitions. [2023-11-17 15:58:28,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10762 transitions. [2023-11-17 15:58:28,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:28,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10762 transitions. [2023-11-17 15:58:28,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 219.6326530612245) internal successors, (10762), 49 states have internal predecessors, (10762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 642.0) internal successors, (32100), 50 states have internal predecessors, (32100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,377 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 642.0) internal successors, (32100), 50 states have internal predecessors, (32100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,377 INFO L175 Difference]: Start difference. First operand has 88 places, 63 transitions, 555 flow. Second operand 49 states and 10762 transitions. [2023-11-17 15:58:28,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 662 transitions, 5948 flow [2023-11-17 15:58:28,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 662 transitions, 5833 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:58:28,467 INFO L231 Difference]: Finished difference. Result has 164 places, 97 transitions, 1163 flow [2023-11-17 15:58:28,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1163, PETRI_PLACES=164, PETRI_TRANSITIONS=97} [2023-11-17 15:58:28,468 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 126 predicate places. [2023-11-17 15:58:28,468 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 97 transitions, 1163 flow [2023-11-17 15:58:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 212.3913043478261) internal successors, (4885), 23 states have internal predecessors, (4885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:28,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:28,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:28,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:28,677 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:28,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1733490998, now seen corresponding path program 1 times [2023-11-17 15:58:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:28,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376748879] [2023-11-17 15:58:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:58:28,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:28,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376748879] [2023-11-17 15:58:28,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376748879] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:28,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19796907] [2023-11-17 15:58:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:28,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:28,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:28,805 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:28,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:58:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:28,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 15:58:28,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:58:29,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:58:29,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19796907] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:29,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:58:29,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2023-11-17 15:58:29,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096031871] [2023-11-17 15:58:29,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:29,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:58:29,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:29,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:58:29,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:58:29,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 642 [2023-11-17 15:58:29,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 97 transitions, 1163 flow. Second operand has 7 states, 7 states have (on average 237.85714285714286) internal successors, (1665), 7 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:29,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 642 [2023-11-17 15:58:29,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:29,683 INFO L124 PetriNetUnfolderBase]: 4226/6152 cut-off events. [2023-11-17 15:58:29,683 INFO L125 PetriNetUnfolderBase]: For 71306/71306 co-relation queries the response was YES. [2023-11-17 15:58:29,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32155 conditions, 6152 events. 4226/6152 cut-off events. For 71306/71306 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30995 event pairs, 1212 based on Foata normal form. 272/6151 useless extension candidates. Maximal degree in co-relation 32101. Up to 3576 conditions per place. [2023-11-17 15:58:29,728 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 107 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2023-11-17 15:58:29,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 130 transitions, 1868 flow [2023-11-17 15:58:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:58:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:58:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1693 transitions. [2023-11-17 15:58:29,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37672452158433467 [2023-11-17 15:58:29,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1693 transitions. [2023-11-17 15:58:29,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1693 transitions. [2023-11-17 15:58:29,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:29,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1693 transitions. [2023-11-17 15:58:29,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 241.85714285714286) internal successors, (1693), 7 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,733 INFO L175 Difference]: Start difference. First operand has 164 places, 97 transitions, 1163 flow. Second operand 7 states and 1693 transitions. [2023-11-17 15:58:29,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 130 transitions, 1868 flow [2023-11-17 15:58:29,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 130 transitions, 1634 flow, removed 111 selfloop flow, removed 27 redundant places. [2023-11-17 15:58:29,963 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 1095 flow [2023-11-17 15:58:29,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1095, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2023-11-17 15:58:29,963 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2023-11-17 15:58:29,964 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 1095 flow [2023-11-17 15:58:29,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.85714285714286) internal successors, (1665), 7 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:29,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:29,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:29,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:30,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-17 15:58:30,165 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:30,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1201955631, now seen corresponding path program 1 times [2023-11-17 15:58:30,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:30,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369391875] [2023-11-17 15:58:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:30,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:58:30,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:30,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369391875] [2023-11-17 15:58:30,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369391875] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:30,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609262543] [2023-11-17 15:58:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:30,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:30,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:30,335 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:30,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:58:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:30,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:58:30,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:58:30,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:58:30,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609262543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:58:30,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:58:30,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-11-17 15:58:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015356207] [2023-11-17 15:58:30,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:58:30,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:58:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:58:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:58:30,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 642 [2023-11-17 15:58:30,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 1095 flow. Second operand has 16 states, 16 states have (on average 242.4375) internal successors, (3879), 16 states have internal predecessors, (3879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:30,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:30,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 642 [2023-11-17 15:58:30,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:31,880 INFO L124 PetriNetUnfolderBase]: 7310/10796 cut-off events. [2023-11-17 15:58:31,881 INFO L125 PetriNetUnfolderBase]: For 49614/49657 co-relation queries the response was YES. [2023-11-17 15:58:31,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49476 conditions, 10796 events. 7310/10796 cut-off events. For 49614/49657 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 61650 event pairs, 3572 based on Foata normal form. 8/10765 useless extension candidates. Maximal degree in co-relation 49445. Up to 4134 conditions per place. [2023-11-17 15:58:31,960 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 167 selfloop transitions, 30 changer transitions 40/238 dead transitions. [2023-11-17 15:58:31,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 238 transitions, 3111 flow [2023-11-17 15:58:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:58:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:58:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2481 transitions. [2023-11-17 15:58:31,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38644859813084115 [2023-11-17 15:58:31,963 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2481 transitions. [2023-11-17 15:58:31,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2481 transitions. [2023-11-17 15:58:31,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:31,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2481 transitions. [2023-11-17 15:58:31,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 248.1) internal successors, (2481), 10 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:31,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 642.0) internal successors, (7062), 11 states have internal predecessors, (7062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:31,970 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 642.0) internal successors, (7062), 11 states have internal predecessors, (7062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:31,970 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 1095 flow. Second operand 10 states and 2481 transitions. [2023-11-17 15:58:31,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 238 transitions, 3111 flow [2023-11-17 15:58:32,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 238 transitions, 3067 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:58:32,088 INFO L231 Difference]: Finished difference. Result has 122 places, 113 transitions, 1272 flow [2023-11-17 15:58:32,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1272, PETRI_PLACES=122, PETRI_TRANSITIONS=113} [2023-11-17 15:58:32,088 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2023-11-17 15:58:32,088 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 113 transitions, 1272 flow [2023-11-17 15:58:32,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 242.4375) internal successors, (3879), 16 states have internal predecessors, (3879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:32,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:32,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:32,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:32,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:32,294 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:58:32,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1169175255, now seen corresponding path program 1 times [2023-11-17 15:58:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:32,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19831706] [2023-11-17 15:58:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:32,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:58:33,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:33,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19831706] [2023-11-17 15:58:33,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19831706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:33,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499469914] [2023-11-17 15:58:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:33,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:33,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:33,210 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:33,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 15:58:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:33,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-17 15:58:33,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:33,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 84 [2023-11-17 15:58:33,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:58:33,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 15:58:33,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 15:58:33,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 15:58:34,681 INFO L349 Elim1Store]: treesize reduction 4, result has 91.8 percent of original size [2023-11-17 15:58:34,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 96 [2023-11-17 15:58:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:58:34,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:36,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:36,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 97 [2023-11-17 15:58:36,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:36,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29120 treesize of output 27425 [2023-11-17 15:58:36,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:36,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2856 treesize of output 2792 [2023-11-17 15:58:36,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:36,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2768 treesize of output 2504 [2023-11-17 15:58:36,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:36,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2480 treesize of output 2328 [2023-11-17 16:00:28,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:00:28,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 97 [2023-11-17 16:00:28,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:00:28,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14544 treesize of output 13713 [2023-11-17 16:00:29,186 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:00:29,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2856 treesize of output 2704 [2023-11-17 16:00:29,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:00:29,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2680 treesize of output 2616 [2023-11-17 16:00:29,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:00:29,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2592 treesize of output 2328 [2023-11-17 16:03:22,583 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 101 [2023-11-17 16:03:22,583 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 16:03:22,584 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 16:03:22,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 16:03:22,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-17 16:03:22,790 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:495) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 78 more [2023-11-17 16:03:22,793 INFO L158 Benchmark]: Toolchain (without parser) took 360166.26ms. Allocated memory was 184.5MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 140.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-11-17 16:03:22,793 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:03:22,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.96ms. Allocated memory is still 184.5MB. Free memory was 140.4MB in the beginning and 127.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 16:03:22,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.03ms. Allocated memory is still 184.5MB. Free memory was 127.7MB in the beginning and 125.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:03:22,794 INFO L158 Benchmark]: Boogie Preprocessor took 40.32ms. Allocated memory is still 184.5MB. Free memory was 125.3MB in the beginning and 123.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:03:22,794 INFO L158 Benchmark]: RCFGBuilder took 554.64ms. Allocated memory is still 184.5MB. Free memory was 123.2MB in the beginning and 99.1MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-11-17 16:03:22,794 INFO L158 Benchmark]: TraceAbstraction took 359232.26ms. Allocated memory was 184.5MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 98.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-11-17 16:03:22,795 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 289.96ms. Allocated memory is still 184.5MB. Free memory was 140.4MB in the beginning and 127.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.03ms. Allocated memory is still 184.5MB. Free memory was 127.7MB in the beginning and 125.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.32ms. Allocated memory is still 184.5MB. Free memory was 125.3MB in the beginning and 123.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 554.64ms. Allocated memory is still 184.5MB. Free memory was 123.2MB in the beginning and 99.1MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 359232.26ms. Allocated memory was 184.5MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 98.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.5s, 284 PlacesBefore, 38 PlacesAfterwards, 302 TransitionsBefore, 39 TransitionsAfterwards, 8448 CoEnabledTransitionPairs, 9 FixpointIterations, 164 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 36 TrivialYvCompositions, 29 ConcurrentYvCompositions, 17 ChoiceCompositions, 326 TotalNumberOfCompositions, 11283 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9382, independent: 9213, independent conditional: 0, independent unconditional: 9213, dependent: 169, dependent conditional: 0, dependent unconditional: 169, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6577, independent: 6523, independent conditional: 0, independent unconditional: 6523, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6577, independent: 6523, independent conditional: 0, independent unconditional: 6523, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 110, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9382, independent: 2690, independent conditional: 0, independent unconditional: 2690, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 6577, unknown conditional: 0, unknown unconditional: 6577] , Statistics on independence cache: Total cache size (in pairs): 306, Positive cache size: 291, Positive conditional cache size: 0, Positive unconditional cache size: 291, 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 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...