/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/popl20-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:22:55,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:22:55,710 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 16:22:55,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:22:55,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:22:55,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:22:55,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:22:55,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:22:55,751 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:22:55,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:22:55,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:22:55,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:22:55,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:22:55,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:22:55,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:22:55,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:22:55,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:22:55,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:22:55,757 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:22:55,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:22:55,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:22:55,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:22:55,759 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:22:55,759 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:22:55,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:22:55,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:22:55,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:22:55,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:22:55,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:22:55,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:22:55,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:22:55,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:22:55,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:22:55,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:22:56,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:22:56,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:22:56,006 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:22:56,007 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:22:56,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-11-17 16:22:57,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:22:57,418 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:22:57,418 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-11-17 16:22:57,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a34b56579/a1bad24db38547578f27c11bdf40865a/FLAGd431a082b [2023-11-17 16:22:57,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a34b56579/a1bad24db38547578f27c11bdf40865a [2023-11-17 16:22:57,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:22:57,441 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:22:57,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:22:57,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:22:57,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:22:57,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef6aaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57, skipping insertion in model container [2023-11-17 16:22:57,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:22:57,598 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/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2023-11-17 16:22:57,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:22:57,610 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:22:57,632 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/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2023-11-17 16:22:57,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:22:57,642 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:22:57,642 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:22:57,649 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:22:57,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57 WrapperNode [2023-11-17 16:22:57,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:22:57,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:22:57,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:22:57,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:22:57,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,677 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-17 16:22:57,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:22:57,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:22:57,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:22:57,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:22:57,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:22:57,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:22:57,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:22:57,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:22:57,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (1/1) ... [2023-11-17 16:22:57,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:22:57,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:22:57,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 16:22:57,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 16:22:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:22:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:22:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:22:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:22:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:22:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:22:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:22:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:22:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:22:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:22:57,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:22:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:22:57,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:22:57,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:22:57,780 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:22:57,904 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:22:57,906 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:22:58,079 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:22:58,113 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:22:58,113 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 16:22:58,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:22:58 BoogieIcfgContainer [2023-11-17 16:22:58,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:22:58,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:22:58,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:22:58,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:22:58,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:22:57" (1/3) ... [2023-11-17 16:22:58,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e17ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:22:58, skipping insertion in model container [2023-11-17 16:22:58,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:22:57" (2/3) ... [2023-11-17 16:22:58,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e17ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:22:58, skipping insertion in model container [2023-11-17 16:22:58,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:22:58" (3/3) ... [2023-11-17 16:22:58,122 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2023-11-17 16:22:58,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:22:58,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:22:58,134 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:22:58,193 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 16:22:58,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 184 flow [2023-11-17 16:22:58,260 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2023-11-17 16:22:58,261 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:22:58,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 6/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 16:22:58,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 184 flow [2023-11-17 16:22:58,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 74 transitions, 160 flow [2023-11-17 16:22:58,272 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:22:58,283 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 74 transitions, 160 flow [2023-11-17 16:22:58,285 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 74 transitions, 160 flow [2023-11-17 16:22:58,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 160 flow [2023-11-17 16:22:58,317 INFO L124 PetriNetUnfolderBase]: 6/74 cut-off events. [2023-11-17 16:22:58,317 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:22:58,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 74 events. 6/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 16:22:58,321 INFO L119 LiptonReduction]: Number of co-enabled transitions 504 [2023-11-17 16:23:00,207 INFO L134 LiptonReduction]: Checked pairs total: 528 [2023-11-17 16:23:00,207 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-17 16:23:00,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:23:00,245 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;@5d28cefb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:23:00,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 16:23:00,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:23:00,258 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-17 16:23:00,258 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:23:00,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:00,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:00,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:00,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:00,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1391978178, now seen corresponding path program 1 times [2023-11-17 16:23:00,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:00,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643893963] [2023-11-17 16:23:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:00,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:00,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643893963] [2023-11-17 16:23:00,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643893963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:23:00,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:23:00,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 16:23:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779295237] [2023-11-17 16:23:00,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:23:00,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:23:00,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:23:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:23:00,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 155 [2023-11-17 16:23:00,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:00,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:00,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 155 [2023-11-17 16:23:00,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:00,779 INFO L124 PetriNetUnfolderBase]: 68/124 cut-off events. [2023-11-17 16:23:00,779 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-17 16:23:00,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 124 events. 68/124 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 307 event pairs, 24 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 200. Up to 64 conditions per place. [2023-11-17 16:23:00,781 INFO L140 encePairwiseOnDemand]: 152/155 looper letters, 20 selfloop transitions, 2 changer transitions 4/26 dead transitions. [2023-11-17 16:23:00,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 125 flow [2023-11-17 16:23:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:23:00,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:23:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-11-17 16:23:00,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2023-11-17 16:23:00,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-11-17 16:23:00,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-11-17 16:23:00,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:00,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-11-17 16:23:00,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:00,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:00,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:00,816 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 243 transitions. [2023-11-17 16:23:00,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 125 flow [2023-11-17 16:23:00,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 111 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:23:00,822 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 46 flow [2023-11-17 16:23:00,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2023-11-17 16:23:00,828 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-11-17 16:23:00,828 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 46 flow [2023-11-17 16:23:00,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:00,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:00,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:00,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:23:00,829 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:00,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash 579099089, now seen corresponding path program 1 times [2023-11-17 16:23:00,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:00,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980126385] [2023-11-17 16:23:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:00,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:00,994 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 16:23:00,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:00,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980126385] [2023-11-17 16:23:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980126385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:23:00,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:23:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:23:00,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648818093] [2023-11-17 16:23:00,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:23:00,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:23:00,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:23:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:23:00,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 155 [2023-11-17 16:23:00,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:00,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:00,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 155 [2023-11-17 16:23:00,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:01,061 INFO L124 PetriNetUnfolderBase]: 87/157 cut-off events. [2023-11-17 16:23:01,062 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-17 16:23:01,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 157 events. 87/157 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 439 event pairs, 46 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 164. Up to 124 conditions per place. [2023-11-17 16:23:01,063 INFO L140 encePairwiseOnDemand]: 151/155 looper letters, 21 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-11-17 16:23:01,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 116 flow [2023-11-17 16:23:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:23:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:23:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2023-11-17 16:23:01,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693548387096774 [2023-11-17 16:23:01,066 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 291 transitions. [2023-11-17 16:23:01,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 291 transitions. [2023-11-17 16:23:01,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:01,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 291 transitions. [2023-11-17 16:23:01,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:01,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:01,069 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:01,069 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 46 flow. Second operand 4 states and 291 transitions. [2023-11-17 16:23:01,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 116 flow [2023-11-17 16:23:01,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:23:01,071 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 58 flow [2023-11-17 16:23:01,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-11-17 16:23:01,071 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2023-11-17 16:23:01,072 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 58 flow [2023-11-17 16:23:01,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:01,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:01,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:01,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:23:01,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:01,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash -648436054, now seen corresponding path program 1 times [2023-11-17 16:23:01,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:01,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216418948] [2023-11-17 16:23:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:01,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:01,423 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 16:23:01,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:01,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216418948] [2023-11-17 16:23:01,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216418948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:01,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418800103] [2023-11-17 16:23:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:01,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:01,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:01,429 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 16:23:01,454 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 16:23:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:01,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:23:01,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:01,611 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 16:23:01,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:01,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418800103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:01,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:01,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 3] total 11 [2023-11-17 16:23:01,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078575908] [2023-11-17 16:23:01,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:01,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 16:23:01,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:01,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 16:23:01,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-17 16:23:01,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:23:01,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 58 flow. Second operand has 13 states, 13 states have (on average 61.0) internal successors, (793), 13 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:01,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:01,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:23:01,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:02,110 INFO L124 PetriNetUnfolderBase]: 165/298 cut-off events. [2023-11-17 16:23:02,110 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-17 16:23:02,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 298 events. 165/298 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1076 event pairs, 3 based on Foata normal form. 12/276 useless extension candidates. Maximal degree in co-relation 230. Up to 97 conditions per place. [2023-11-17 16:23:02,116 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 55 selfloop transitions, 17 changer transitions 14/86 dead transitions. [2023-11-17 16:23:02,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 86 transitions, 448 flow [2023-11-17 16:23:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:23:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:23:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 723 transitions. [2023-11-17 16:23:02,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4240469208211144 [2023-11-17 16:23:02,119 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 723 transitions. [2023-11-17 16:23:02,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 723 transitions. [2023-11-17 16:23:02,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:02,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 723 transitions. [2023-11-17 16:23:02,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.72727272727273) internal successors, (723), 11 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:02,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:02,126 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:02,127 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 58 flow. Second operand 11 states and 723 transitions. [2023-11-17 16:23:02,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 86 transitions, 448 flow [2023-11-17 16:23:02,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 86 transitions, 418 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-17 16:23:02,131 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 183 flow [2023-11-17 16:23:02,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=183, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-17 16:23:02,132 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 18 predicate places. [2023-11-17 16:23:02,132 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 183 flow [2023-11-17 16:23:02,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 61.0) internal successors, (793), 13 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:02,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:02,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:02,143 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 16:23:02,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:02,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:02,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:02,342 INFO L85 PathProgramCache]: Analyzing trace with hash -514036276, now seen corresponding path program 2 times [2023-11-17 16:23:02,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:02,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694201549] [2023-11-17 16:23:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:02,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:23:02,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:02,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694201549] [2023-11-17 16:23:02,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694201549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:02,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941407719] [2023-11-17 16:23:02,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:23:02,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:02,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:02,509 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 16:23:02,541 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 16:23:02,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:23:02,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:02,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:23:02,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:23:02,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:23:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941407719] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:02,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-17 16:23:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064150307] [2023-11-17 16:23:02,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 16:23:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 16:23:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-17 16:23:02,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 155 [2023-11-17 16:23:02,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 183 flow. Second operand has 11 states, 11 states have (on average 66.81818181818181) internal successors, (735), 11 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:02,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:02,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 155 [2023-11-17 16:23:02,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:02,840 INFO L124 PetriNetUnfolderBase]: 167/300 cut-off events. [2023-11-17 16:23:02,841 INFO L125 PetriNetUnfolderBase]: For 509/509 co-relation queries the response was YES. [2023-11-17 16:23:02,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 300 events. 167/300 cut-off events. For 509/509 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1029 event pairs, 35 based on Foata normal form. 16/316 useless extension candidates. Maximal degree in co-relation 1015. Up to 233 conditions per place. [2023-11-17 16:23:02,845 INFO L140 encePairwiseOnDemand]: 150/155 looper letters, 40 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2023-11-17 16:23:02,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 363 flow [2023-11-17 16:23:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:23:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:23:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 352 transitions. [2023-11-17 16:23:02,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4541935483870968 [2023-11-17 16:23:02,847 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 352 transitions. [2023-11-17 16:23:02,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 352 transitions. [2023-11-17 16:23:02,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:02,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 352 transitions. [2023-11-17 16:23:02,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:02,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:02,850 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:02,850 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 183 flow. Second operand 5 states and 352 transitions. [2023-11-17 16:23:02,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 363 flow [2023-11-17 16:23:02,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 330 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-17 16:23:02,859 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 221 flow [2023-11-17 16:23:02,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-11-17 16:23:02,861 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 22 predicate places. [2023-11-17 16:23:02,861 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 221 flow [2023-11-17 16:23:02,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.81818181818181) internal successors, (735), 11 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:02,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:02,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:02,872 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 16:23:03,067 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,SelfDestructingSolverStorable3 [2023-11-17 16:23:03,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:03,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:03,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2127952401, now seen corresponding path program 3 times [2023-11-17 16:23:03,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:03,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863581074] [2023-11-17 16:23:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:03,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:03,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:03,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863581074] [2023-11-17 16:23:03,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863581074] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:03,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453199259] [2023-11-17 16:23:03,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:23:03,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:03,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:03,278 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 16:23:03,307 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 16:23:03,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:23:03,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:03,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:23:03,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:03,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:03,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453199259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:03,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:03,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 16:23:03,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245238770] [2023-11-17 16:23:03,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:03,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 16:23:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 16:23:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-17 16:23:03,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 155 [2023-11-17 16:23:03,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 221 flow. Second operand has 13 states, 13 states have (on average 62.30769230769231) internal successors, (810), 13 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:03,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:03,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 155 [2023-11-17 16:23:03,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:04,135 INFO L124 PetriNetUnfolderBase]: 266/454 cut-off events. [2023-11-17 16:23:04,136 INFO L125 PetriNetUnfolderBase]: For 1208/1208 co-relation queries the response was YES. [2023-11-17 16:23:04,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 454 events. 266/454 cut-off events. For 1208/1208 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1729 event pairs, 1 based on Foata normal form. 14/468 useless extension candidates. Maximal degree in co-relation 1705. Up to 149 conditions per place. [2023-11-17 16:23:04,139 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 71 selfloop transitions, 45 changer transitions 19/135 dead transitions. [2023-11-17 16:23:04,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 135 transitions, 1028 flow [2023-11-17 16:23:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 16:23:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 16:23:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1372 transitions. [2023-11-17 16:23:04,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421505376344086 [2023-11-17 16:23:04,144 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1372 transitions. [2023-11-17 16:23:04,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1372 transitions. [2023-11-17 16:23:04,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:04,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1372 transitions. [2023-11-17 16:23:04,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 65.33333333333333) internal successors, (1372), 21 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:04,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 155.0) internal successors, (3410), 22 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:04,154 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 155.0) internal successors, (3410), 22 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:04,154 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 221 flow. Second operand 21 states and 1372 transitions. [2023-11-17 16:23:04,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 135 transitions, 1028 flow [2023-11-17 16:23:04,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 135 transitions, 984 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-17 16:23:04,161 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 590 flow [2023-11-17 16:23:04,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=590, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2023-11-17 16:23:04,163 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 47 predicate places. [2023-11-17 16:23:04,163 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 590 flow [2023-11-17 16:23:04,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.30769230769231) internal successors, (810), 13 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:04,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:04,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:04,176 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 16:23:04,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:04,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:04,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:04,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1996773033, now seen corresponding path program 4 times [2023-11-17 16:23:04,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:04,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112128102] [2023-11-17 16:23:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:04,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:04,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112128102] [2023-11-17 16:23:04,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112128102] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923312802] [2023-11-17 16:23:04,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:23:04,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:04,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:04,560 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 16:23:04,581 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 16:23:04,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:23:04,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:04,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:23:04,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:04,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:04,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923312802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:04,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:04,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-17 16:23:04,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980183023] [2023-11-17 16:23:04,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:04,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:23:04,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:23:04,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:23:04,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 155 [2023-11-17 16:23:04,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 590 flow. Second operand has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:04,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:04,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 155 [2023-11-17 16:23:04,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:05,445 INFO L124 PetriNetUnfolderBase]: 290/488 cut-off events. [2023-11-17 16:23:05,445 INFO L125 PetriNetUnfolderBase]: For 4462/4462 co-relation queries the response was YES. [2023-11-17 16:23:05,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2597 conditions, 488 events. 290/488 cut-off events. For 4462/4462 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1814 event pairs, 6 based on Foata normal form. 22/510 useless extension candidates. Maximal degree in co-relation 2495. Up to 167 conditions per place. [2023-11-17 16:23:05,451 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 87 selfloop transitions, 70 changer transitions 1/158 dead transitions. [2023-11-17 16:23:05,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 158 transitions, 1591 flow [2023-11-17 16:23:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 16:23:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 16:23:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1370 transitions. [2023-11-17 16:23:05,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42089093701996927 [2023-11-17 16:23:05,456 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1370 transitions. [2023-11-17 16:23:05,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1370 transitions. [2023-11-17 16:23:05,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:05,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1370 transitions. [2023-11-17 16:23:05,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 65.23809523809524) internal successors, (1370), 21 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:05,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 155.0) internal successors, (3410), 22 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:05,466 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 155.0) internal successors, (3410), 22 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:05,466 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 590 flow. Second operand 21 states and 1370 transitions. [2023-11-17 16:23:05,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 158 transitions, 1591 flow [2023-11-17 16:23:05,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 158 transitions, 1289 flow, removed 141 selfloop flow, removed 6 redundant places. [2023-11-17 16:23:05,485 INFO L231 Difference]: Finished difference. Result has 90 places, 109 transitions, 1023 flow [2023-11-17 16:23:05,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1023, PETRI_PLACES=90, PETRI_TRANSITIONS=109} [2023-11-17 16:23:05,489 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2023-11-17 16:23:05,490 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 109 transitions, 1023 flow [2023-11-17 16:23:05,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:05,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:05,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:05,503 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 16:23:05,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:05,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:05,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:05,697 INFO L85 PathProgramCache]: Analyzing trace with hash -93494421, now seen corresponding path program 5 times [2023-11-17 16:23:05,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:05,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879472432] [2023-11-17 16:23:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:05,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:05,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879472432] [2023-11-17 16:23:05,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879472432] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:05,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509760565] [2023-11-17 16:23:05,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:23:05,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:05,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:05,912 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 16:23:05,935 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 16:23:05,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:23:05,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:05,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:23:05,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:06,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:06,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509760565] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:06,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:06,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2023-11-17 16:23:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990704256] [2023-11-17 16:23:06,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:06,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:23:06,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:06,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:23:06,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:23:06,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 155 [2023-11-17 16:23:06,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 1023 flow. Second operand has 15 states, 15 states have (on average 65.06666666666666) internal successors, (976), 15 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:06,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:06,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 155 [2023-11-17 16:23:06,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:06,976 INFO L124 PetriNetUnfolderBase]: 347/594 cut-off events. [2023-11-17 16:23:06,976 INFO L125 PetriNetUnfolderBase]: For 7986/7986 co-relation queries the response was YES. [2023-11-17 16:23:06,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3384 conditions, 594 events. 347/594 cut-off events. For 7986/7986 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2435 event pairs, 22 based on Foata normal form. 12/606 useless extension candidates. Maximal degree in co-relation 3280. Up to 222 conditions per place. [2023-11-17 16:23:06,984 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 90 selfloop transitions, 95 changer transitions 4/189 dead transitions. [2023-11-17 16:23:06,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 189 transitions, 2015 flow [2023-11-17 16:23:06,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 16:23:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 16:23:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1413 transitions. [2023-11-17 16:23:06,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410138248847924 [2023-11-17 16:23:06,988 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1413 transitions. [2023-11-17 16:23:06,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1413 transitions. [2023-11-17 16:23:06,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:06,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1413 transitions. [2023-11-17 16:23:06,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.28571428571429) internal successors, (1413), 21 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:06,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 155.0) internal successors, (3410), 22 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:06,998 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 155.0) internal successors, (3410), 22 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:06,998 INFO L175 Difference]: Start difference. First operand has 90 places, 109 transitions, 1023 flow. Second operand 21 states and 1413 transitions. [2023-11-17 16:23:06,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 189 transitions, 2015 flow [2023-11-17 16:23:07,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 189 transitions, 1796 flow, removed 106 selfloop flow, removed 2 redundant places. [2023-11-17 16:23:07,030 INFO L231 Difference]: Finished difference. Result has 115 places, 139 transitions, 1437 flow [2023-11-17 16:23:07,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1437, PETRI_PLACES=115, PETRI_TRANSITIONS=139} [2023-11-17 16:23:07,031 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 95 predicate places. [2023-11-17 16:23:07,031 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 139 transitions, 1437 flow [2023-11-17 16:23:07,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 65.06666666666666) internal successors, (976), 15 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:07,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:07,032 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:07,037 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 16:23:07,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:07,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:07,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:07,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1249869235, now seen corresponding path program 6 times [2023-11-17 16:23:07,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:07,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916940528] [2023-11-17 16:23:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:07,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:07,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:07,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916940528] [2023-11-17 16:23:07,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916940528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:07,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660290270] [2023-11-17 16:23:07,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:23:07,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:07,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:07,412 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 16:23:07,432 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 16:23:07,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:23:07,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:07,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:23:07,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:07,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:07,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660290270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:07,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:07,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-11-17 16:23:07,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291277013] [2023-11-17 16:23:07,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:07,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:23:07,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:23:07,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:23:07,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 155 [2023-11-17 16:23:07,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 139 transitions, 1437 flow. Second operand has 14 states, 14 states have (on average 64.85714285714286) internal successors, (908), 14 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:07,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:07,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 155 [2023-11-17 16:23:07,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:08,243 INFO L124 PetriNetUnfolderBase]: 428/771 cut-off events. [2023-11-17 16:23:08,243 INFO L125 PetriNetUnfolderBase]: For 14877/14877 co-relation queries the response was YES. [2023-11-17 16:23:08,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 771 events. 428/771 cut-off events. For 14877/14877 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3574 event pairs, 34 based on Foata normal form. 32/803 useless extension candidates. Maximal degree in co-relation 4496. Up to 230 conditions per place. [2023-11-17 16:23:08,253 INFO L140 encePairwiseOnDemand]: 149/155 looper letters, 94 selfloop transitions, 125 changer transitions 2/221 dead transitions. [2023-11-17 16:23:08,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 221 transitions, 2628 flow [2023-11-17 16:23:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 16:23:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 16:23:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1163 transitions. [2023-11-17 16:23:08,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413662239089184 [2023-11-17 16:23:08,258 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1163 transitions. [2023-11-17 16:23:08,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1163 transitions. [2023-11-17 16:23:08,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:08,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1163 transitions. [2023-11-17 16:23:08,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 68.41176470588235) internal successors, (1163), 17 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:08,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 155.0) internal successors, (2790), 18 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:08,267 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 155.0) internal successors, (2790), 18 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:08,267 INFO L175 Difference]: Start difference. First operand has 115 places, 139 transitions, 1437 flow. Second operand 17 states and 1163 transitions. [2023-11-17 16:23:08,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 221 transitions, 2628 flow [2023-11-17 16:23:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 221 transitions, 2291 flow, removed 145 selfloop flow, removed 7 redundant places. [2023-11-17 16:23:08,318 INFO L231 Difference]: Finished difference. Result has 131 places, 172 transitions, 2048 flow [2023-11-17 16:23:08,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2048, PETRI_PLACES=131, PETRI_TRANSITIONS=172} [2023-11-17 16:23:08,320 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 111 predicate places. [2023-11-17 16:23:08,320 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 172 transitions, 2048 flow [2023-11-17 16:23:08,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 64.85714285714286) internal successors, (908), 14 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:08,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:08,321 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:08,341 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 16:23:08,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:08,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:08,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:08,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2121799723, now seen corresponding path program 7 times [2023-11-17 16:23:08,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:08,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357909943] [2023-11-17 16:23:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:08,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:08,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:08,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357909943] [2023-11-17 16:23:08,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357909943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:08,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671614858] [2023-11-17 16:23:08,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:23:08,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:08,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:08,703 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 16:23:08,708 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 16:23:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:08,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:23:08,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:08,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:09,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671614858] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:09,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:09,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 16:23:09,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025983986] [2023-11-17 16:23:09,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:09,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:23:09,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:09,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:23:09,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:23:09,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 155 [2023-11-17 16:23:09,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 172 transitions, 2048 flow. Second operand has 15 states, 15 states have (on average 62.4) internal successors, (936), 15 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:09,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:09,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 155 [2023-11-17 16:23:09,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:09,795 INFO L124 PetriNetUnfolderBase]: 576/1040 cut-off events. [2023-11-17 16:23:09,795 INFO L125 PetriNetUnfolderBase]: For 14538/14538 co-relation queries the response was YES. [2023-11-17 16:23:09,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6907 conditions, 1040 events. 576/1040 cut-off events. For 14538/14538 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5171 event pairs, 35 based on Foata normal form. 33/1073 useless extension candidates. Maximal degree in co-relation 6758. Up to 652 conditions per place. [2023-11-17 16:23:09,807 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 183 selfloop transitions, 108 changer transitions 8/299 dead transitions. [2023-11-17 16:23:09,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 299 transitions, 4103 flow [2023-11-17 16:23:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 16:23:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 16:23:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1510 transitions. [2023-11-17 16:23:09,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423562412342216 [2023-11-17 16:23:09,815 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1510 transitions. [2023-11-17 16:23:09,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1510 transitions. [2023-11-17 16:23:09,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:09,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1510 transitions. [2023-11-17 16:23:09,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 65.65217391304348) internal successors, (1510), 23 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:09,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 155.0) internal successors, (3720), 24 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:09,827 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 155.0) internal successors, (3720), 24 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:09,827 INFO L175 Difference]: Start difference. First operand has 131 places, 172 transitions, 2048 flow. Second operand 23 states and 1510 transitions. [2023-11-17 16:23:09,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 299 transitions, 4103 flow [2023-11-17 16:23:09,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 299 transitions, 3749 flow, removed 159 selfloop flow, removed 5 redundant places. [2023-11-17 16:23:09,896 INFO L231 Difference]: Finished difference. Result has 165 places, 231 transitions, 3195 flow [2023-11-17 16:23:09,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3195, PETRI_PLACES=165, PETRI_TRANSITIONS=231} [2023-11-17 16:23:09,898 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 145 predicate places. [2023-11-17 16:23:09,898 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 231 transitions, 3195 flow [2023-11-17 16:23:09,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 62.4) internal successors, (936), 15 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:09,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:09,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:09,904 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 16:23:10,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:10,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:10,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:10,105 INFO L85 PathProgramCache]: Analyzing trace with hash -644478879, now seen corresponding path program 8 times [2023-11-17 16:23:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:10,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004711446] [2023-11-17 16:23:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:10,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:10,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:10,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004711446] [2023-11-17 16:23:10,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004711446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:10,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007436134] [2023-11-17 16:23:10,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:23:10,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:10,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:10,285 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 16:23:10,306 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 16:23:10,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:23:10,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:10,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:23:10,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:10,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:10,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007436134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:10,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:10,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2023-11-17 16:23:10,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900370204] [2023-11-17 16:23:10,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:10,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:23:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:23:10,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:23:10,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 155 [2023-11-17 16:23:10,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 231 transitions, 3195 flow. Second operand has 15 states, 15 states have (on average 65.13333333333334) internal successors, (977), 15 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:10,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:10,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 155 [2023-11-17 16:23:10,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:11,127 INFO L124 PetriNetUnfolderBase]: 549/966 cut-off events. [2023-11-17 16:23:11,128 INFO L125 PetriNetUnfolderBase]: For 15822/15822 co-relation queries the response was YES. [2023-11-17 16:23:11,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7112 conditions, 966 events. 549/966 cut-off events. For 15822/15822 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4600 event pairs, 151 based on Foata normal form. 6/972 useless extension candidates. Maximal degree in co-relation 6948. Up to 814 conditions per place. [2023-11-17 16:23:11,141 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 169 selfloop transitions, 71 changer transitions 5/245 dead transitions. [2023-11-17 16:23:11,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 245 transitions, 3734 flow [2023-11-17 16:23:11,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 16:23:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 16:23:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 807 transitions. [2023-11-17 16:23:11,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338709677419355 [2023-11-17 16:23:11,144 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 807 transitions. [2023-11-17 16:23:11,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 807 transitions. [2023-11-17 16:23:11,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:11,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 807 transitions. [2023-11-17 16:23:11,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 67.25) internal successors, (807), 12 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:11,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 155.0) internal successors, (2015), 13 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:11,152 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 155.0) internal successors, (2015), 13 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:11,152 INFO L175 Difference]: Start difference. First operand has 165 places, 231 transitions, 3195 flow. Second operand 12 states and 807 transitions. [2023-11-17 16:23:11,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 245 transitions, 3734 flow [2023-11-17 16:23:11,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 245 transitions, 3205 flow, removed 255 selfloop flow, removed 4 redundant places. [2023-11-17 16:23:11,241 INFO L231 Difference]: Finished difference. Result has 172 places, 222 transitions, 2698 flow [2023-11-17 16:23:11,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2698, PETRI_PLACES=172, PETRI_TRANSITIONS=222} [2023-11-17 16:23:11,243 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 152 predicate places. [2023-11-17 16:23:11,243 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 222 transitions, 2698 flow [2023-11-17 16:23:11,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 65.13333333333334) internal successors, (977), 15 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:11,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:11,244 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:11,251 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 16:23:11,450 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,SelfDestructingSolverStorable9 [2023-11-17 16:23:11,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:11,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash 674600299, now seen corresponding path program 9 times [2023-11-17 16:23:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:11,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37233656] [2023-11-17 16:23:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:11,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:11,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37233656] [2023-11-17 16:23:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37233656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474965622] [2023-11-17 16:23:11,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:23:11,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:11,589 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 16:23:11,606 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 16:23:11,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:23:11,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:11,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:23:11,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:11,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:11,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474965622] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:11,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:11,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 16:23:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183097442] [2023-11-17 16:23:11,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:11,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:23:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:23:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:23:11,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 155 [2023-11-17 16:23:11,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 222 transitions, 2698 flow. Second operand has 14 states, 14 states have (on average 62.214285714285715) internal successors, (871), 14 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:11,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:11,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 155 [2023-11-17 16:23:11,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:12,803 INFO L124 PetriNetUnfolderBase]: 672/1185 cut-off events. [2023-11-17 16:23:12,803 INFO L125 PetriNetUnfolderBase]: For 19745/19745 co-relation queries the response was YES. [2023-11-17 16:23:12,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8100 conditions, 1185 events. 672/1185 cut-off events. For 19745/19745 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5993 event pairs, 23 based on Foata normal form. 22/1207 useless extension candidates. Maximal degree in co-relation 7871. Up to 742 conditions per place. [2023-11-17 16:23:12,819 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 215 selfloop transitions, 132 changer transitions 0/347 dead transitions. [2023-11-17 16:23:12,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 347 transitions, 4759 flow [2023-11-17 16:23:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 16:23:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 16:23:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1753 transitions. [2023-11-17 16:23:12,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41887694145758664 [2023-11-17 16:23:12,822 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1753 transitions. [2023-11-17 16:23:12,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1753 transitions. [2023-11-17 16:23:12,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:12,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1753 transitions. [2023-11-17 16:23:12,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 64.92592592592592) internal successors, (1753), 27 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:12,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 155.0) internal successors, (4340), 28 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:12,837 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 155.0) internal successors, (4340), 28 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:12,837 INFO L175 Difference]: Start difference. First operand has 172 places, 222 transitions, 2698 flow. Second operand 27 states and 1753 transitions. [2023-11-17 16:23:12,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 347 transitions, 4759 flow [2023-11-17 16:23:12,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 347 transitions, 4648 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-17 16:23:12,936 INFO L231 Difference]: Finished difference. Result has 201 places, 277 transitions, 3997 flow [2023-11-17 16:23:12,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3997, PETRI_PLACES=201, PETRI_TRANSITIONS=277} [2023-11-17 16:23:12,937 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 181 predicate places. [2023-11-17 16:23:12,937 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 277 transitions, 3997 flow [2023-11-17 16:23:12,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 62.214285714285715) internal successors, (871), 14 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:12,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:12,938 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:12,944 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 16:23:13,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:13,144 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:13,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1712925863, now seen corresponding path program 10 times [2023-11-17 16:23:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:13,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173561195] [2023-11-17 16:23:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:13,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:13,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:13,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173561195] [2023-11-17 16:23:13,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173561195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:13,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761739595] [2023-11-17 16:23:13,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:23:13,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:13,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:13,355 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 16:23:13,378 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 16:23:13,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:23:13,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:13,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:23:13,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:13,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:13,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761739595] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:13,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:13,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 16:23:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927366650] [2023-11-17 16:23:13,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:13,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:23:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:23:13,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:23:13,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 155 [2023-11-17 16:23:13,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 277 transitions, 3997 flow. Second operand has 15 states, 15 states have (on average 65.13333333333334) internal successors, (977), 15 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:13,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:13,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 155 [2023-11-17 16:23:13,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:14,390 INFO L124 PetriNetUnfolderBase]: 790/1409 cut-off events. [2023-11-17 16:23:14,390 INFO L125 PetriNetUnfolderBase]: For 36631/36631 co-relation queries the response was YES. [2023-11-17 16:23:14,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11123 conditions, 1409 events. 790/1409 cut-off events. For 36631/36631 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7479 event pairs, 151 based on Foata normal form. 24/1433 useless extension candidates. Maximal degree in co-relation 10871. Up to 963 conditions per place. [2023-11-17 16:23:14,412 INFO L140 encePairwiseOnDemand]: 149/155 looper letters, 251 selfloop transitions, 130 changer transitions 3/384 dead transitions. [2023-11-17 16:23:14,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 384 transitions, 6364 flow [2023-11-17 16:23:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 16:23:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 16:23:14,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1564 transitions. [2023-11-17 16:23:14,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2023-11-17 16:23:14,415 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1564 transitions. [2023-11-17 16:23:14,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1564 transitions. [2023-11-17 16:23:14,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:14,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1564 transitions. [2023-11-17 16:23:14,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 68.0) internal successors, (1564), 23 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:14,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 155.0) internal successors, (3720), 24 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:14,462 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 155.0) internal successors, (3720), 24 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:14,462 INFO L175 Difference]: Start difference. First operand has 201 places, 277 transitions, 3997 flow. Second operand 23 states and 1564 transitions. [2023-11-17 16:23:14,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 384 transitions, 6364 flow [2023-11-17 16:23:14,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 384 transitions, 5497 flow, removed 410 selfloop flow, removed 9 redundant places. [2023-11-17 16:23:14,657 INFO L231 Difference]: Finished difference. Result has 225 places, 321 transitions, 4620 flow [2023-11-17 16:23:14,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=3504, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4620, PETRI_PLACES=225, PETRI_TRANSITIONS=321} [2023-11-17 16:23:14,658 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 205 predicate places. [2023-11-17 16:23:14,658 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 321 transitions, 4620 flow [2023-11-17 16:23:14,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 65.13333333333334) internal successors, (977), 15 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:14,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:14,659 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:14,668 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 16:23:14,865 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,SelfDestructingSolverStorable11 [2023-11-17 16:23:14,865 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:14,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash 24665499, now seen corresponding path program 11 times [2023-11-17 16:23:14,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:14,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714941991] [2023-11-17 16:23:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714941991] [2023-11-17 16:23:15,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714941991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:15,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238179130] [2023-11-17 16:23:15,043 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:23:15,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:15,044 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:15,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 16:23:15,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:23:15,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:15,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:23:15,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:15,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:15,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238179130] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:15,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:15,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-17 16:23:15,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472747984] [2023-11-17 16:23:15,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:15,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:23:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:15,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:23:15,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:23:15,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 155 [2023-11-17 16:23:15,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 321 transitions, 4620 flow. Second operand has 17 states, 17 states have (on average 64.88235294117646) internal successors, (1103), 17 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:15,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:15,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 155 [2023-11-17 16:23:15,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:16,171 INFO L124 PetriNetUnfolderBase]: 813/1428 cut-off events. [2023-11-17 16:23:16,171 INFO L125 PetriNetUnfolderBase]: For 31663/31663 co-relation queries the response was YES. [2023-11-17 16:23:16,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11253 conditions, 1428 events. 813/1428 cut-off events. For 31663/31663 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7369 event pairs, 186 based on Foata normal form. 8/1436 useless extension candidates. Maximal degree in co-relation 11054. Up to 1167 conditions per place. [2023-11-17 16:23:16,196 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 242 selfloop transitions, 114 changer transitions 4/360 dead transitions. [2023-11-17 16:23:16,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 360 transitions, 5912 flow [2023-11-17 16:23:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 16:23:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 16:23:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1139 transitions. [2023-11-17 16:23:16,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2023-11-17 16:23:16,199 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1139 transitions. [2023-11-17 16:23:16,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1139 transitions. [2023-11-17 16:23:16,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:16,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1139 transitions. [2023-11-17 16:23:16,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.0) internal successors, (1139), 17 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:16,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 155.0) internal successors, (2790), 18 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:16,205 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 155.0) internal successors, (2790), 18 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:16,205 INFO L175 Difference]: Start difference. First operand has 225 places, 321 transitions, 4620 flow. Second operand 17 states and 1139 transitions. [2023-11-17 16:23:16,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 360 transitions, 5912 flow [2023-11-17 16:23:16,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 360 transitions, 5513 flow, removed 160 selfloop flow, removed 7 redundant places. [2023-11-17 16:23:16,409 INFO L231 Difference]: Finished difference. Result has 238 places, 330 transitions, 4815 flow [2023-11-17 16:23:16,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=4260, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4815, PETRI_PLACES=238, PETRI_TRANSITIONS=330} [2023-11-17 16:23:16,411 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 218 predicate places. [2023-11-17 16:23:16,411 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 330 transitions, 4815 flow [2023-11-17 16:23:16,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 64.88235294117646) internal successors, (1103), 17 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:16,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:16,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:16,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:16,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 16:23:16,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:16,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1717775350, now seen corresponding path program 12 times [2023-11-17 16:23:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:16,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789584605] [2023-11-17 16:23:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:16,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:16,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789584605] [2023-11-17 16:23:16,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789584605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568258879] [2023-11-17 16:23:16,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:23:16,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:16,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:16,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:16,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 16:23:16,988 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:23:16,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:16,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 16:23:16,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:17,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:23:17,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568258879] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:17,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:17,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 15 [2023-11-17 16:23:17,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101275664] [2023-11-17 16:23:17,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:17,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:23:17,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:17,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:23:17,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:23:17,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:23:17,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 330 transitions, 4815 flow. Second operand has 17 states, 17 states have (on average 60.470588235294116) internal successors, (1028), 17 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:17,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:17,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:23:17,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:18,320 INFO L124 PetriNetUnfolderBase]: 1176/2151 cut-off events. [2023-11-17 16:23:18,321 INFO L125 PetriNetUnfolderBase]: For 49746/49746 co-relation queries the response was YES. [2023-11-17 16:23:18,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17269 conditions, 2151 events. 1176/2151 cut-off events. For 49746/49746 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 12906 event pairs, 40 based on Foata normal form. 6/2157 useless extension candidates. Maximal degree in co-relation 16932. Up to 948 conditions per place. [2023-11-17 16:23:18,350 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 309 selfloop transitions, 161 changer transitions 80/550 dead transitions. [2023-11-17 16:23:18,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 550 transitions, 9119 flow [2023-11-17 16:23:18,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 16:23:18,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 16:23:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1104 transitions. [2023-11-17 16:23:18,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41897533206831117 [2023-11-17 16:23:18,353 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1104 transitions. [2023-11-17 16:23:18,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1104 transitions. [2023-11-17 16:23:18,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:18,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1104 transitions. [2023-11-17 16:23:18,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 64.94117647058823) internal successors, (1104), 17 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:18,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 155.0) internal successors, (2790), 18 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:18,359 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 155.0) internal successors, (2790), 18 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:18,359 INFO L175 Difference]: Start difference. First operand has 238 places, 330 transitions, 4815 flow. Second operand 17 states and 1104 transitions. [2023-11-17 16:23:18,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 550 transitions, 9119 flow [2023-11-17 16:23:18,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 550 transitions, 8870 flow, removed 80 selfloop flow, removed 9 redundant places. [2023-11-17 16:23:18,567 INFO L231 Difference]: Finished difference. Result has 255 places, 384 transitions, 6285 flow [2023-11-17 16:23:18,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=4651, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6285, PETRI_PLACES=255, PETRI_TRANSITIONS=384} [2023-11-17 16:23:18,568 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 235 predicate places. [2023-11-17 16:23:18,568 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 384 transitions, 6285 flow [2023-11-17 16:23:18,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 60.470588235294116) internal successors, (1028), 17 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:18,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:18,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:18,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:18,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 16:23:18,769 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:18,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:18,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1259455124, now seen corresponding path program 13 times [2023-11-17 16:23:18,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:18,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659357776] [2023-11-17 16:23:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:18,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:19,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:19,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659357776] [2023-11-17 16:23:19,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659357776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:19,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481490858] [2023-11-17 16:23:19,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:23:19,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:19,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:19,112 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:19,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 16:23:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:19,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 16:23:19,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:19,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:23:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481490858] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:19,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:19,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 19 [2023-11-17 16:23:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892681926] [2023-11-17 16:23:19,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:19,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:23:19,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:19,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:23:19,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:23:19,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:23:19,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 384 transitions, 6285 flow. Second operand has 20 states, 20 states have (on average 60.05) internal successors, (1201), 20 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:19,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:19,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:23:19,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:20,654 INFO L124 PetriNetUnfolderBase]: 1042/1938 cut-off events. [2023-11-17 16:23:20,654 INFO L125 PetriNetUnfolderBase]: For 62566/62566 co-relation queries the response was YES. [2023-11-17 16:23:20,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16799 conditions, 1938 events. 1042/1938 cut-off events. For 62566/62566 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 11563 event pairs, 34 based on Foata normal form. 62/2000 useless extension candidates. Maximal degree in co-relation 16507. Up to 1413 conditions per place. [2023-11-17 16:23:20,682 INFO L140 encePairwiseOnDemand]: 149/155 looper letters, 336 selfloop transitions, 107 changer transitions 34/477 dead transitions. [2023-11-17 16:23:20,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 477 transitions, 8652 flow [2023-11-17 16:23:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 16:23:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 16:23:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1333 transitions. [2023-11-17 16:23:20,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2023-11-17 16:23:20,686 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1333 transitions. [2023-11-17 16:23:20,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1333 transitions. [2023-11-17 16:23:20,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:20,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1333 transitions. [2023-11-17 16:23:20,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 63.476190476190474) internal successors, (1333), 21 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:20,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 155.0) internal successors, (3410), 22 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:20,694 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 155.0) internal successors, (3410), 22 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:20,694 INFO L175 Difference]: Start difference. First operand has 255 places, 384 transitions, 6285 flow. Second operand 21 states and 1333 transitions. [2023-11-17 16:23:20,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 477 transitions, 8652 flow [2023-11-17 16:23:20,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 477 transitions, 8369 flow, removed 105 selfloop flow, removed 11 redundant places. [2023-11-17 16:23:20,892 INFO L231 Difference]: Finished difference. Result has 270 places, 387 transitions, 6647 flow [2023-11-17 16:23:20,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=5892, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6647, PETRI_PLACES=270, PETRI_TRANSITIONS=387} [2023-11-17 16:23:20,893 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 250 predicate places. [2023-11-17 16:23:20,893 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 387 transitions, 6647 flow [2023-11-17 16:23:20,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 60.05) internal successors, (1201), 20 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:20,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:20,893 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:20,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:21,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 16:23:21,099 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:21,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash -187597740, now seen corresponding path program 14 times [2023-11-17 16:23:21,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:21,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856499298] [2023-11-17 16:23:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:21,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:21,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:21,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856499298] [2023-11-17 16:23:21,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856499298] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:21,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656240214] [2023-11-17 16:23:21,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:23:21,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:21,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:21,291 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:21,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 16:23:21,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:23:21,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:21,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:23:21,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:21,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:21,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656240214] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:21,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:21,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-11-17 16:23:21,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809763369] [2023-11-17 16:23:21,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:21,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:23:21,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:21,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:23:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:23:21,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 155 [2023-11-17 16:23:21,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 387 transitions, 6647 flow. Second operand has 22 states, 22 states have (on average 61.81818181818182) internal successors, (1360), 22 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:21,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:21,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 155 [2023-11-17 16:23:21,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:23,661 INFO L124 PetriNetUnfolderBase]: 1128/2050 cut-off events. [2023-11-17 16:23:23,661 INFO L125 PetriNetUnfolderBase]: For 61384/61384 co-relation queries the response was YES. [2023-11-17 16:23:23,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18496 conditions, 2050 events. 1128/2050 cut-off events. For 61384/61384 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 12064 event pairs, 48 based on Foata normal form. 22/2072 useless extension candidates. Maximal degree in co-relation 18157. Up to 993 conditions per place. [2023-11-17 16:23:23,689 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 253 selfloop transitions, 209 changer transitions 5/467 dead transitions. [2023-11-17 16:23:23,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 467 transitions, 8862 flow [2023-11-17 16:23:23,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 16:23:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 16:23:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1413 transitions. [2023-11-17 16:23:23,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41436950146627566 [2023-11-17 16:23:23,692 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1413 transitions. [2023-11-17 16:23:23,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1413 transitions. [2023-11-17 16:23:23,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:23,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1413 transitions. [2023-11-17 16:23:23,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 64.22727272727273) internal successors, (1413), 22 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:23,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:23,699 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:23,699 INFO L175 Difference]: Start difference. First operand has 270 places, 387 transitions, 6647 flow. Second operand 22 states and 1413 transitions. [2023-11-17 16:23:23,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 467 transitions, 8862 flow [2023-11-17 16:23:23,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 467 transitions, 8490 flow, removed 115 selfloop flow, removed 12 redundant places. [2023-11-17 16:23:23,985 INFO L231 Difference]: Finished difference. Result has 284 places, 420 transitions, 7731 flow [2023-11-17 16:23:23,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=6209, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7731, PETRI_PLACES=284, PETRI_TRANSITIONS=420} [2023-11-17 16:23:23,985 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 264 predicate places. [2023-11-17 16:23:23,985 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 420 transitions, 7731 flow [2023-11-17 16:23:23,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.81818181818182) internal successors, (1360), 22 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:23,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:23,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:23,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:24,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:24,192 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:24,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:24,192 INFO L85 PathProgramCache]: Analyzing trace with hash -918958502, now seen corresponding path program 15 times [2023-11-17 16:23:24,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:24,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880031162] [2023-11-17 16:23:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:24,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880031162] [2023-11-17 16:23:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880031162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:24,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887976272] [2023-11-17 16:23:24,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:23:24,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:24,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:24,371 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:24,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 16:23:24,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:23:24,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:24,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:23:24,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:24,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:25,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887976272] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:25,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:25,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-11-17 16:23:25,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609534822] [2023-11-17 16:23:25,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:25,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:23:25,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:23:25,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:23:25,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 155 [2023-11-17 16:23:25,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 420 transitions, 7731 flow. Second operand has 22 states, 22 states have (on average 61.81818181818182) internal successors, (1360), 22 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:25,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:25,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 155 [2023-11-17 16:23:25,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:26,539 INFO L124 PetriNetUnfolderBase]: 1191/2131 cut-off events. [2023-11-17 16:23:26,540 INFO L125 PetriNetUnfolderBase]: For 76961/76961 co-relation queries the response was YES. [2023-11-17 16:23:26,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20894 conditions, 2131 events. 1191/2131 cut-off events. For 76961/76961 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12435 event pairs, 49 based on Foata normal form. 24/2155 useless extension candidates. Maximal degree in co-relation 20580. Up to 1629 conditions per place. [2023-11-17 16:23:26,566 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 277 selfloop transitions, 196 changer transitions 4/477 dead transitions. [2023-11-17 16:23:26,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 477 transitions, 10025 flow [2023-11-17 16:23:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 16:23:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 16:23:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1159 transitions. [2023-11-17 16:23:26,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154121863799283 [2023-11-17 16:23:26,569 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1159 transitions. [2023-11-17 16:23:26,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1159 transitions. [2023-11-17 16:23:26,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:26,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1159 transitions. [2023-11-17 16:23:26,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 64.38888888888889) internal successors, (1159), 18 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:26,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 155.0) internal successors, (2945), 19 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:26,575 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 155.0) internal successors, (2945), 19 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:26,575 INFO L175 Difference]: Start difference. First operand has 284 places, 420 transitions, 7731 flow. Second operand 18 states and 1159 transitions. [2023-11-17 16:23:26,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 477 transitions, 10025 flow [2023-11-17 16:23:26,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 477 transitions, 9518 flow, removed 189 selfloop flow, removed 9 redundant places. [2023-11-17 16:23:26,992 INFO L231 Difference]: Finished difference. Result has 294 places, 439 transitions, 8660 flow [2023-11-17 16:23:26,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=7234, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8660, PETRI_PLACES=294, PETRI_TRANSITIONS=439} [2023-11-17 16:23:26,993 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 274 predicate places. [2023-11-17 16:23:26,993 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 439 transitions, 8660 flow [2023-11-17 16:23:26,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.81818181818182) internal successors, (1360), 22 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:26,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:26,993 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:26,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:27,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 16:23:27,194 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:27,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:27,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1638417432, now seen corresponding path program 16 times [2023-11-17 16:23:27,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:27,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050163587] [2023-11-17 16:23:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:27,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:27,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050163587] [2023-11-17 16:23:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050163587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693253997] [2023-11-17 16:23:27,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:23:27,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:27,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:27,391 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:27,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 16:23:27,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:23:27,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:27,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:23:27,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:27,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:28,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693253997] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:28,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:28,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-17 16:23:28,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936171217] [2023-11-17 16:23:28,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:28,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:23:28,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:28,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:23:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:23:28,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 155 [2023-11-17 16:23:28,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 439 transitions, 8660 flow. Second operand has 19 states, 19 states have (on average 61.89473684210526) internal successors, (1176), 19 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:28,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:28,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 155 [2023-11-17 16:23:28,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:29,448 INFO L124 PetriNetUnfolderBase]: 1182/2116 cut-off events. [2023-11-17 16:23:29,448 INFO L125 PetriNetUnfolderBase]: For 77542/77542 co-relation queries the response was YES. [2023-11-17 16:23:29,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20618 conditions, 2116 events. 1182/2116 cut-off events. For 77542/77542 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12280 event pairs, 11 based on Foata normal form. 42/2158 useless extension candidates. Maximal degree in co-relation 20262. Up to 1307 conditions per place. [2023-11-17 16:23:29,477 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 282 selfloop transitions, 213 changer transitions 2/497 dead transitions. [2023-11-17 16:23:29,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 497 transitions, 10359 flow [2023-11-17 16:23:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 16:23:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 16:23:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1295 transitions. [2023-11-17 16:23:29,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41774193548387095 [2023-11-17 16:23:29,481 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1295 transitions. [2023-11-17 16:23:29,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1295 transitions. [2023-11-17 16:23:29,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:29,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1295 transitions. [2023-11-17 16:23:29,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 64.75) internal successors, (1295), 20 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:29,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 155.0) internal successors, (3255), 21 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:29,488 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 155.0) internal successors, (3255), 21 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:29,488 INFO L175 Difference]: Start difference. First operand has 294 places, 439 transitions, 8660 flow. Second operand 20 states and 1295 transitions. [2023-11-17 16:23:29,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 497 transitions, 10359 flow [2023-11-17 16:23:29,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 497 transitions, 9794 flow, removed 221 selfloop flow, removed 20 redundant places. [2023-11-17 16:23:29,822 INFO L231 Difference]: Finished difference. Result has 289 places, 444 transitions, 8822 flow [2023-11-17 16:23:29,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=7899, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8822, PETRI_PLACES=289, PETRI_TRANSITIONS=444} [2023-11-17 16:23:29,822 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 269 predicate places. [2023-11-17 16:23:29,822 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 444 transitions, 8822 flow [2023-11-17 16:23:29,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 61.89473684210526) internal successors, (1176), 19 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:29,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:29,823 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:29,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:30,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 16:23:30,023 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:30,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 874113281, now seen corresponding path program 17 times [2023-11-17 16:23:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:30,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338678294] [2023-11-17 16:23:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:30,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338678294] [2023-11-17 16:23:30,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338678294] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630411496] [2023-11-17 16:23:30,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:23:30,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:30,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:30,256 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:30,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 16:23:30,334 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:23:30,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:30,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:23:30,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:30,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:30,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630411496] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:30,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:30,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-11-17 16:23:30,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412373105] [2023-11-17 16:23:30,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:30,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:23:30,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:30,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:23:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:23:30,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:23:30,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 444 transitions, 8822 flow. Second operand has 17 states, 17 states have (on average 60.05882352941177) internal successors, (1021), 17 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:30,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:30,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:23:30,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:32,622 INFO L124 PetriNetUnfolderBase]: 1830/3066 cut-off events. [2023-11-17 16:23:32,622 INFO L125 PetriNetUnfolderBase]: For 94510/94510 co-relation queries the response was YES. [2023-11-17 16:23:32,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31498 conditions, 3066 events. 1830/3066 cut-off events. For 94510/94510 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 17720 event pairs, 36 based on Foata normal form. 12/3078 useless extension candidates. Maximal degree in co-relation 31043. Up to 1187 conditions per place. [2023-11-17 16:23:32,654 INFO L140 encePairwiseOnDemand]: 146/155 looper letters, 431 selfloop transitions, 376 changer transitions 23/830 dead transitions. [2023-11-17 16:23:32,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 830 transitions, 17943 flow [2023-11-17 16:23:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-17 16:23:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-17 16:23:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2196 transitions. [2023-11-17 16:23:32,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4047926267281106 [2023-11-17 16:23:32,660 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2196 transitions. [2023-11-17 16:23:32,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2196 transitions. [2023-11-17 16:23:32,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:32,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2196 transitions. [2023-11-17 16:23:32,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 62.74285714285714) internal successors, (2196), 35 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:32,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 155.0) internal successors, (5580), 36 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:32,671 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 155.0) internal successors, (5580), 36 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:32,671 INFO L175 Difference]: Start difference. First operand has 289 places, 444 transitions, 8822 flow. Second operand 35 states and 2196 transitions. [2023-11-17 16:23:32,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 830 transitions, 17943 flow [2023-11-17 16:23:33,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 830 transitions, 17335 flow, removed 206 selfloop flow, removed 16 redundant places. [2023-11-17 16:23:33,063 INFO L231 Difference]: Finished difference. Result has 324 places, 653 transitions, 13880 flow [2023-11-17 16:23:33,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=8456, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=13880, PETRI_PLACES=324, PETRI_TRANSITIONS=653} [2023-11-17 16:23:33,064 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 304 predicate places. [2023-11-17 16:23:33,064 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 653 transitions, 13880 flow [2023-11-17 16:23:33,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 60.05882352941177) internal successors, (1021), 17 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:33,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:33,064 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:33,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:33,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:33,269 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:33,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash -241625395, now seen corresponding path program 18 times [2023-11-17 16:23:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:33,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110734225] [2023-11-17 16:23:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:33,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:33,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110734225] [2023-11-17 16:23:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110734225] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633189240] [2023-11-17 16:23:33,594 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:23:33,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:33,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:33,595 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:33,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-17 16:23:33,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 16:23:33,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:33,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:23:33,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:33,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633189240] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:34,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:34,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-11-17 16:23:34,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586194342] [2023-11-17 16:23:34,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:34,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:23:34,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:23:34,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:23:34,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:23:34,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 653 transitions, 13880 flow. Second operand has 22 states, 22 states have (on average 60.04545454545455) internal successors, (1321), 22 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:34,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:34,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:23:34,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:36,140 INFO L124 PetriNetUnfolderBase]: 1937/3267 cut-off events. [2023-11-17 16:23:36,140 INFO L125 PetriNetUnfolderBase]: For 129195/129195 co-relation queries the response was YES. [2023-11-17 16:23:36,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35713 conditions, 3267 events. 1937/3267 cut-off events. For 129195/129195 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 19475 event pairs, 137 based on Foata normal form. 46/3313 useless extension candidates. Maximal degree in co-relation 35476. Up to 1331 conditions per place. [2023-11-17 16:23:36,177 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 401 selfloop transitions, 391 changer transitions 2/794 dead transitions. [2023-11-17 16:23:36,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 794 transitions, 18202 flow [2023-11-17 16:23:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 16:23:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 16:23:36,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2061 transitions. [2023-11-17 16:23:36,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4029325513196481 [2023-11-17 16:23:36,183 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2061 transitions. [2023-11-17 16:23:36,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2061 transitions. [2023-11-17 16:23:36,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:36,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2061 transitions. [2023-11-17 16:23:36,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 62.45454545454545) internal successors, (2061), 33 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:36,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 155.0) internal successors, (5270), 34 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:36,260 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 155.0) internal successors, (5270), 34 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:36,260 INFO L175 Difference]: Start difference. First operand has 324 places, 653 transitions, 13880 flow. Second operand 33 states and 2061 transitions. [2023-11-17 16:23:36,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 794 transitions, 18202 flow [2023-11-17 16:23:36,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 794 transitions, 17227 flow, removed 418 selfloop flow, removed 8 redundant places. [2023-11-17 16:23:36,793 INFO L231 Difference]: Finished difference. Result has 351 places, 705 transitions, 15546 flow [2023-11-17 16:23:36,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=12822, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=15546, PETRI_PLACES=351, PETRI_TRANSITIONS=705} [2023-11-17 16:23:36,795 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 331 predicate places. [2023-11-17 16:23:36,795 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 705 transitions, 15546 flow [2023-11-17 16:23:36,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 60.04545454545455) internal successors, (1321), 22 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:36,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:36,795 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:36,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:37,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:37,001 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:37,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1604633779, now seen corresponding path program 19 times [2023-11-17 16:23:37,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:37,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440101061] [2023-11-17 16:23:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:37,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:37,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:37,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440101061] [2023-11-17 16:23:37,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440101061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:37,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457294304] [2023-11-17 16:23:37,219 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:23:37,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:37,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:37,220 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:37,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-17 16:23:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:37,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:23:37,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:37,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457294304] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:37,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:37,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-17 16:23:37,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208937857] [2023-11-17 16:23:37,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:37,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:23:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:23:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:23:37,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 155 [2023-11-17 16:23:37,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 705 transitions, 15546 flow. Second operand has 20 states, 20 states have (on average 61.8) internal successors, (1236), 20 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:37,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:37,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 155 [2023-11-17 16:23:37,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:39,816 INFO L124 PetriNetUnfolderBase]: 2052/3532 cut-off events. [2023-11-17 16:23:39,816 INFO L125 PetriNetUnfolderBase]: For 146419/146419 co-relation queries the response was YES. [2023-11-17 16:23:39,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39699 conditions, 3532 events. 2052/3532 cut-off events. For 146419/146419 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 21741 event pairs, 52 based on Foata normal form. 30/3562 useless extension candidates. Maximal degree in co-relation 39020. Up to 1151 conditions per place. [2023-11-17 16:23:39,870 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 399 selfloop transitions, 435 changer transitions 31/865 dead transitions. [2023-11-17 16:23:39,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 865 transitions, 20205 flow [2023-11-17 16:23:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 16:23:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 16:23:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2146 transitions. [2023-11-17 16:23:39,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195503421309873 [2023-11-17 16:23:39,873 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2146 transitions. [2023-11-17 16:23:39,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2146 transitions. [2023-11-17 16:23:39,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:39,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2146 transitions. [2023-11-17 16:23:39,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 65.03030303030303) internal successors, (2146), 33 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:39,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 155.0) internal successors, (5270), 34 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:39,882 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 155.0) internal successors, (5270), 34 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:39,882 INFO L175 Difference]: Start difference. First operand has 351 places, 705 transitions, 15546 flow. Second operand 33 states and 2146 transitions. [2023-11-17 16:23:39,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 865 transitions, 20205 flow [2023-11-17 16:23:40,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 865 transitions, 18996 flow, removed 560 selfloop flow, removed 17 redundant places. [2023-11-17 16:23:40,647 INFO L231 Difference]: Finished difference. Result has 376 places, 742 transitions, 16669 flow [2023-11-17 16:23:40,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=14393, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=16669, PETRI_PLACES=376, PETRI_TRANSITIONS=742} [2023-11-17 16:23:40,648 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 356 predicate places. [2023-11-17 16:23:40,648 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 742 transitions, 16669 flow [2023-11-17 16:23:40,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 61.8) internal successors, (1236), 20 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:40,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:40,648 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:40,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:40,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:40,854 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:40,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1495965967, now seen corresponding path program 20 times [2023-11-17 16:23:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:40,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359525708] [2023-11-17 16:23:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:40,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:41,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359525708] [2023-11-17 16:23:41,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359525708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546114040] [2023-11-17 16:23:41,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:23:41,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:41,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:41,129 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:41,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-17 16:23:41,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:23:41,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:41,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:23:41,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:41,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:41,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546114040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:41,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:41,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-11-17 16:23:41,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401768773] [2023-11-17 16:23:41,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:41,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:23:41,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:41,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:23:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:23:41,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:23:41,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 742 transitions, 16669 flow. Second operand has 21 states, 21 states have (on average 59.80952380952381) internal successors, (1256), 21 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:41,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:41,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:23:41,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:43,361 INFO L124 PetriNetUnfolderBase]: 1982/3346 cut-off events. [2023-11-17 16:23:43,361 INFO L125 PetriNetUnfolderBase]: For 135108/135108 co-relation queries the response was YES. [2023-11-17 16:23:43,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38503 conditions, 3346 events. 1982/3346 cut-off events. For 135108/135108 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 20090 event pairs, 218 based on Foata normal form. 10/3356 useless extension candidates. Maximal degree in co-relation 38239. Up to 1514 conditions per place. [2023-11-17 16:23:43,399 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 430 selfloop transitions, 347 changer transitions 3/780 dead transitions. [2023-11-17 16:23:43,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 780 transitions, 18790 flow [2023-11-17 16:23:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 16:23:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 16:23:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1368 transitions. [2023-11-17 16:23:43,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40117302052785925 [2023-11-17 16:23:43,402 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1368 transitions. [2023-11-17 16:23:43,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1368 transitions. [2023-11-17 16:23:43,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:43,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1368 transitions. [2023-11-17 16:23:43,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 62.18181818181818) internal successors, (1368), 22 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:43,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:43,407 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:43,407 INFO L175 Difference]: Start difference. First operand has 376 places, 742 transitions, 16669 flow. Second operand 22 states and 1368 transitions. [2023-11-17 16:23:43,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 780 transitions, 18790 flow [2023-11-17 16:23:44,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 780 transitions, 17877 flow, removed 391 selfloop flow, removed 15 redundant places. [2023-11-17 16:23:44,123 INFO L231 Difference]: Finished difference. Result has 379 places, 731 transitions, 16359 flow [2023-11-17 16:23:44,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=15678, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=16359, PETRI_PLACES=379, PETRI_TRANSITIONS=731} [2023-11-17 16:23:44,124 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 359 predicate places. [2023-11-17 16:23:44,124 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 731 transitions, 16359 flow [2023-11-17 16:23:44,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 59.80952380952381) internal successors, (1256), 21 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:44,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:44,125 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:44,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-17 16:23:44,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-17 16:23:44,333 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:44,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:44,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1632245801, now seen corresponding path program 21 times [2023-11-17 16:23:44,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:44,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507388348] [2023-11-17 16:23:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:44,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:44,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:44,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507388348] [2023-11-17 16:23:44,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507388348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:44,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211597026] [2023-11-17 16:23:44,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:23:44,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:44,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:44,555 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:44,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-17 16:23:44,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:23:44,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:44,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:23:44,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:44,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:45,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211597026] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:45,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:45,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-17 16:23:45,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797517929] [2023-11-17 16:23:45,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:45,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:23:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:23:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:23:45,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:23:45,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 731 transitions, 16359 flow. Second operand has 19 states, 19 states have (on average 60.05263157894737) internal successors, (1141), 19 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:45,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:45,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:23:45,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:47,824 INFO L124 PetriNetUnfolderBase]: 2076/3506 cut-off events. [2023-11-17 16:23:47,824 INFO L125 PetriNetUnfolderBase]: For 139234/139234 co-relation queries the response was YES. [2023-11-17 16:23:47,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39355 conditions, 3506 events. 2076/3506 cut-off events. For 139234/139234 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 21005 event pairs, 65 based on Foata normal form. 26/3532 useless extension candidates. Maximal degree in co-relation 38887. Up to 1391 conditions per place. [2023-11-17 16:23:47,865 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 497 selfloop transitions, 452 changer transitions 5/954 dead transitions. [2023-11-17 16:23:47,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 954 transitions, 21874 flow [2023-11-17 16:23:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-17 16:23:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-17 16:23:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3125 transitions. [2023-11-17 16:23:47,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2023-11-17 16:23:47,869 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3125 transitions. [2023-11-17 16:23:47,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3125 transitions. [2023-11-17 16:23:47,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:47,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3125 transitions. [2023-11-17 16:23:47,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 62.5) internal successors, (3125), 50 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:47,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 155.0) internal successors, (7905), 51 states have internal predecessors, (7905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:47,881 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 155.0) internal successors, (7905), 51 states have internal predecessors, (7905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:47,881 INFO L175 Difference]: Start difference. First operand has 379 places, 731 transitions, 16359 flow. Second operand 50 states and 3125 transitions. [2023-11-17 16:23:47,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 954 transitions, 21874 flow [2023-11-17 16:23:48,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 954 transitions, 21366 flow, removed 2 selfloop flow, removed 18 redundant places. [2023-11-17 16:23:48,609 INFO L231 Difference]: Finished difference. Result has 422 places, 779 transitions, 17894 flow [2023-11-17 16:23:48,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=15890, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=404, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=17894, PETRI_PLACES=422, PETRI_TRANSITIONS=779} [2023-11-17 16:23:48,610 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 402 predicate places. [2023-11-17 16:23:48,610 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 779 transitions, 17894 flow [2023-11-17 16:23:48,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 60.05263157894737) internal successors, (1141), 19 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:48,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:48,611 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:48,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:48,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-17 16:23:48,811 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:48,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1746195433, now seen corresponding path program 22 times [2023-11-17 16:23:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512224474] [2023-11-17 16:23:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:49,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:49,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512224474] [2023-11-17 16:23:49,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512224474] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:49,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869691186] [2023-11-17 16:23:49,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:23:49,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:49,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:49,125 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:49,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-17 16:23:49,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:23:49,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:49,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:23:49,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:49,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:49,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869691186] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:49,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:49,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-17 16:23:49,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193109240] [2023-11-17 16:23:49,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:49,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:23:49,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:49,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:23:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:23:49,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:23:49,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 779 transitions, 17894 flow. Second operand has 18 states, 18 states have (on average 59.833333333333336) internal successors, (1077), 18 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:49,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:49,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:23:49,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:23:52,195 INFO L124 PetriNetUnfolderBase]: 2276/3875 cut-off events. [2023-11-17 16:23:52,195 INFO L125 PetriNetUnfolderBase]: For 179115/179115 co-relation queries the response was YES. [2023-11-17 16:23:52,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45342 conditions, 3875 events. 2276/3875 cut-off events. For 179115/179115 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 23949 event pairs, 85 based on Foata normal form. 21/3896 useless extension candidates. Maximal degree in co-relation 45098. Up to 2806 conditions per place. [2023-11-17 16:23:52,241 INFO L140 encePairwiseOnDemand]: 146/155 looper letters, 682 selfloop transitions, 285 changer transitions 9/976 dead transitions. [2023-11-17 16:23:52,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 976 transitions, 24310 flow [2023-11-17 16:23:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-17 16:23:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-17 16:23:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2275 transitions. [2023-11-17 16:23:52,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40770609318996415 [2023-11-17 16:23:52,244 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2275 transitions. [2023-11-17 16:23:52,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2275 transitions. [2023-11-17 16:23:52,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:23:52,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2275 transitions. [2023-11-17 16:23:52,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 63.19444444444444) internal successors, (2275), 36 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:52,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 155.0) internal successors, (5735), 37 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:52,252 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 155.0) internal successors, (5735), 37 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:52,253 INFO L175 Difference]: Start difference. First operand has 422 places, 779 transitions, 17894 flow. Second operand 36 states and 2275 transitions. [2023-11-17 16:23:52,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 976 transitions, 24310 flow [2023-11-17 16:23:53,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 976 transitions, 23632 flow, removed 202 selfloop flow, removed 20 redundant places. [2023-11-17 16:23:53,254 INFO L231 Difference]: Finished difference. Result has 450 places, 860 transitions, 20823 flow [2023-11-17 16:23:53,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=17365, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=20823, PETRI_PLACES=450, PETRI_TRANSITIONS=860} [2023-11-17 16:23:53,256 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 430 predicate places. [2023-11-17 16:23:53,256 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 860 transitions, 20823 flow [2023-11-17 16:23:53,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 59.833333333333336) internal successors, (1077), 18 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:23:53,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:53,256 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:53,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-17 16:23:53,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:53,462 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:23:53,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:53,463 INFO L85 PathProgramCache]: Analyzing trace with hash -142274409, now seen corresponding path program 23 times [2023-11-17 16:23:53,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:53,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164971793] [2023-11-17 16:23:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:53,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:53,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:53,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:53,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164971793] [2023-11-17 16:23:53,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164971793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:53,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251189881] [2023-11-17 16:23:53,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:23:53,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:53,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:53,816 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:53,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-17 16:23:53,899 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 16:23:53,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:53,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:23:53,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:54,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:54,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251189881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:54,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:54,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-17 16:23:54,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852555396] [2023-11-17 16:23:54,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:54,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:23:54,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:54,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:23:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:23:54,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:23:54,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 860 transitions, 20823 flow. Second operand has 24 states, 24 states have (on average 59.875) internal successors, (1437), 24 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 16:23:54,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:54,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:23:54,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:24:00,288 INFO L124 PetriNetUnfolderBase]: 2419/4136 cut-off events. [2023-11-17 16:24:00,288 INFO L125 PetriNetUnfolderBase]: For 233442/233442 co-relation queries the response was YES. [2023-11-17 16:24:00,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50156 conditions, 4136 events. 2419/4136 cut-off events. For 233442/233442 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 26252 event pairs, 166 based on Foata normal form. 48/4184 useless extension candidates. Maximal degree in co-relation 49778. Up to 1541 conditions per place. [2023-11-17 16:24:00,346 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 513 selfloop transitions, 520 changer transitions 8/1041 dead transitions. [2023-11-17 16:24:00,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1041 transitions, 27405 flow [2023-11-17 16:24:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-17 16:24:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-11-17 16:24:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2613 transitions. [2023-11-17 16:24:00,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40138248847926267 [2023-11-17 16:24:00,350 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2613 transitions. [2023-11-17 16:24:00,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2613 transitions. [2023-11-17 16:24:00,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:24:00,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2613 transitions. [2023-11-17 16:24:00,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 62.214285714285715) internal successors, (2613), 42 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:00,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 155.0) internal successors, (6665), 43 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:00,359 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 155.0) internal successors, (6665), 43 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:00,359 INFO L175 Difference]: Start difference. First operand has 450 places, 860 transitions, 20823 flow. Second operand 42 states and 2613 transitions. [2023-11-17 16:24:00,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1041 transitions, 27405 flow [2023-11-17 16:24:01,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1041 transitions, 26021 flow, removed 618 selfloop flow, removed 14 redundant places. [2023-11-17 16:24:01,745 INFO L231 Difference]: Finished difference. Result has 488 places, 920 transitions, 23350 flow [2023-11-17 16:24:01,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=19546, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=23350, PETRI_PLACES=488, PETRI_TRANSITIONS=920} [2023-11-17 16:24:01,747 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 468 predicate places. [2023-11-17 16:24:01,747 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 920 transitions, 23350 flow [2023-11-17 16:24:01,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 59.875) internal successors, (1437), 24 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 16:24:01,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:24:01,748 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:24:01,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-17 16:24:01,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:01,954 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:24:01,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:24:01,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1586827239, now seen corresponding path program 24 times [2023-11-17 16:24:01,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:24:01,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279118351] [2023-11-17 16:24:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:24:01,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:24:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:24:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:02,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:24:02,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279118351] [2023-11-17 16:24:02,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279118351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:24:02,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218986299] [2023-11-17 16:24:02,296 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:24:02,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:02,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:24:02,297 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:24:02,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-17 16:24:02,360 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:24:02,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:24:02,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:24:02,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:24:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:02,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:24:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:02,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218986299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:24:02,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:24:02,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-17 16:24:02,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023444403] [2023-11-17 16:24:02,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:24:02,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:24:02,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:24:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:24:02,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:24:02,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:24:02,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 920 transitions, 23350 flow. Second operand has 24 states, 24 states have (on average 59.833333333333336) internal successors, (1436), 24 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 16:24:02,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:24:02,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:24:02,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:24:06,863 INFO L124 PetriNetUnfolderBase]: 2889/4926 cut-off events. [2023-11-17 16:24:06,863 INFO L125 PetriNetUnfolderBase]: For 310712/310712 co-relation queries the response was YES. [2023-11-17 16:24:06,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63535 conditions, 4926 events. 2889/4926 cut-off events. For 310712/310712 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 31912 event pairs, 58 based on Foata normal form. 36/4962 useless extension candidates. Maximal degree in co-relation 63148. Up to 1524 conditions per place. [2023-11-17 16:24:06,929 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 438 selfloop transitions, 731 changer transitions 33/1202 dead transitions. [2023-11-17 16:24:06,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1202 transitions, 33216 flow [2023-11-17 16:24:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-17 16:24:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-11-17 16:24:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2618 transitions. [2023-11-17 16:24:06,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021505376344086 [2023-11-17 16:24:06,933 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2618 transitions. [2023-11-17 16:24:06,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2618 transitions. [2023-11-17 16:24:06,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:24:06,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2618 transitions. [2023-11-17 16:24:06,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 62.333333333333336) internal successors, (2618), 42 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:06,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 155.0) internal successors, (6665), 43 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:06,942 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 155.0) internal successors, (6665), 43 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:06,942 INFO L175 Difference]: Start difference. First operand has 488 places, 920 transitions, 23350 flow. Second operand 42 states and 2618 transitions. [2023-11-17 16:24:06,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1202 transitions, 33216 flow [2023-11-17 16:24:08,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 1202 transitions, 31116 flow, removed 808 selfloop flow, removed 25 redundant places. [2023-11-17 16:24:08,782 INFO L231 Difference]: Finished difference. Result has 517 places, 1080 transitions, 29197 flow [2023-11-17 16:24:08,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=21518, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=916, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=586, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=29197, PETRI_PLACES=517, PETRI_TRANSITIONS=1080} [2023-11-17 16:24:08,783 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 497 predicate places. [2023-11-17 16:24:08,783 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 1080 transitions, 29197 flow [2023-11-17 16:24:08,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 59.833333333333336) internal successors, (1436), 24 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 16:24:08,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:24:08,784 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:24:08,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-17 16:24:08,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-17 16:24:08,985 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:24:08,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:24:08,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1595316953, now seen corresponding path program 25 times [2023-11-17 16:24:08,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:24:08,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582183863] [2023-11-17 16:24:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:24:08,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:24:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:24:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:09,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:24:09,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582183863] [2023-11-17 16:24:09,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582183863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:24:09,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476994911] [2023-11-17 16:24:09,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:24:09,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:09,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:24:09,225 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:24:09,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-17 16:24:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:24:09,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:24:09,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:24:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:09,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:24:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:09,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476994911] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:24:09,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:24:09,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-11-17 16:24:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718873946] [2023-11-17 16:24:09,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:24:09,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:24:09,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:24:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:24:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:24:09,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:24:09,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 1080 transitions, 29197 flow. Second operand has 23 states, 23 states have (on average 59.65217391304348) internal successors, (1372), 23 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:09,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:24:09,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:24:09,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:24:13,700 INFO L124 PetriNetUnfolderBase]: 3038/5069 cut-off events. [2023-11-17 16:24:13,700 INFO L125 PetriNetUnfolderBase]: For 329114/329114 co-relation queries the response was YES. [2023-11-17 16:24:13,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67538 conditions, 5069 events. 3038/5069 cut-off events. For 329114/329114 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 32515 event pairs, 593 based on Foata normal form. 28/5097 useless extension candidates. Maximal degree in co-relation 67188. Up to 3925 conditions per place. [2023-11-17 16:24:13,773 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 824 selfloop transitions, 430 changer transitions 12/1266 dead transitions. [2023-11-17 16:24:13,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 1266 transitions, 36953 flow [2023-11-17 16:24:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 16:24:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 16:24:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2119 transitions. [2023-11-17 16:24:13,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40208728652751424 [2023-11-17 16:24:13,775 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2119 transitions. [2023-11-17 16:24:13,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2119 transitions. [2023-11-17 16:24:13,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:24:13,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2119 transitions. [2023-11-17 16:24:13,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 62.3235294117647) internal successors, (2119), 34 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:13,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 155.0) internal successors, (5425), 35 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:13,782 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 155.0) internal successors, (5425), 35 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:13,782 INFO L175 Difference]: Start difference. First operand has 517 places, 1080 transitions, 29197 flow. Second operand 34 states and 2119 transitions. [2023-11-17 16:24:13,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 1266 transitions, 36953 flow [2023-11-17 16:24:15,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1266 transitions, 34290 flow, removed 1251 selfloop flow, removed 18 redundant places. [2023-11-17 16:24:15,958 INFO L231 Difference]: Finished difference. Result has 538 places, 1159 transitions, 31102 flow [2023-11-17 16:24:15,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=26865, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=31102, PETRI_PLACES=538, PETRI_TRANSITIONS=1159} [2023-11-17 16:24:15,959 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 518 predicate places. [2023-11-17 16:24:15,959 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 1159 transitions, 31102 flow [2023-11-17 16:24:15,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.65217391304348) internal successors, (1372), 23 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:15,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:24:15,960 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:24:15,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-17 16:24:16,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-17 16:24:16,160 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:24:16,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:24:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash -16191271, now seen corresponding path program 26 times [2023-11-17 16:24:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:24:16,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389168264] [2023-11-17 16:24:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:24:16,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:24:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:24:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:16,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:24:16,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389168264] [2023-11-17 16:24:16,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389168264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:24:16,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024100023] [2023-11-17 16:24:16,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:24:16,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:16,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:24:16,385 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:24:16,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-17 16:24:16,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:24:16,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:24:16,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:24:16,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:24:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:16,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:24:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:16,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024100023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:24:16,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:24:16,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-11-17 16:24:16,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790865315] [2023-11-17 16:24:16,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:24:16,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:24:16,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:24:16,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:24:16,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:24:16,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:24:16,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1159 transitions, 31102 flow. Second operand has 21 states, 21 states have (on average 59.904761904761905) internal successors, (1258), 21 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:16,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:24:16,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:24:16,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:24:21,187 INFO L124 PetriNetUnfolderBase]: 3538/5870 cut-off events. [2023-11-17 16:24:21,187 INFO L125 PetriNetUnfolderBase]: For 400816/400816 co-relation queries the response was YES. [2023-11-17 16:24:21,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77765 conditions, 5870 events. 3538/5870 cut-off events. For 400816/400816 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 38014 event pairs, 675 based on Foata normal form. 102/5972 useless extension candidates. Maximal degree in co-relation 77299. Up to 4279 conditions per place. [2023-11-17 16:24:21,287 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 906 selfloop transitions, 543 changer transitions 9/1458 dead transitions. [2023-11-17 16:24:21,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 1458 transitions, 42782 flow [2023-11-17 16:24:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 16:24:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 16:24:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2011 transitions. [2023-11-17 16:24:21,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054435483870968 [2023-11-17 16:24:21,290 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2011 transitions. [2023-11-17 16:24:21,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2011 transitions. [2023-11-17 16:24:21,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:24:21,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2011 transitions. [2023-11-17 16:24:21,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 62.84375) internal successors, (2011), 32 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:21,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 155.0) internal successors, (5115), 33 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:21,298 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 155.0) internal successors, (5115), 33 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:21,299 INFO L175 Difference]: Start difference. First operand has 538 places, 1159 transitions, 31102 flow. Second operand 32 states and 2011 transitions. [2023-11-17 16:24:21,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 1458 transitions, 42782 flow [2023-11-17 16:24:23,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 1458 transitions, 41670 flow, removed 392 selfloop flow, removed 24 redundant places. [2023-11-17 16:24:23,785 INFO L231 Difference]: Finished difference. Result has 560 places, 1355 transitions, 38601 flow [2023-11-17 16:24:23,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=29859, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=38601, PETRI_PLACES=560, PETRI_TRANSITIONS=1355} [2023-11-17 16:24:23,786 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 540 predicate places. [2023-11-17 16:24:23,786 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 1355 transitions, 38601 flow [2023-11-17 16:24:23,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 59.904761904761905) internal successors, (1258), 21 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:23,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:24:23,787 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:24:23,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-17 16:24:23,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-17 16:24:23,991 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:24:23,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:24:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash 380230223, now seen corresponding path program 27 times [2023-11-17 16:24:23,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:24:23,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385060176] [2023-11-17 16:24:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:24:23,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:24:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:24:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:24,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:24:24,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385060176] [2023-11-17 16:24:24,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385060176] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:24:24,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610911821] [2023-11-17 16:24:24,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:24:24,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:24,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:24:24,240 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:24:24,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-17 16:24:24,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:24:24,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:24:24,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:24:24,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:24:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:24,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:24:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:24,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610911821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:24:24,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:24:24,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-11-17 16:24:24,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211035544] [2023-11-17 16:24:24,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:24:24,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:24:24,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:24:24,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:24:24,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:24:24,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:24:24,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 1355 transitions, 38601 flow. Second operand has 23 states, 23 states have (on average 59.65217391304348) internal successors, (1372), 23 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:24,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:24:24,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:24:24,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:24:31,293 INFO L124 PetriNetUnfolderBase]: 3598/5940 cut-off events. [2023-11-17 16:24:31,293 INFO L125 PetriNetUnfolderBase]: For 396323/396323 co-relation queries the response was YES. [2023-11-17 16:24:31,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82270 conditions, 5940 events. 3598/5940 cut-off events. For 396323/396323 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 38257 event pairs, 919 based on Foata normal form. 16/5956 useless extension candidates. Maximal degree in co-relation 81791. Up to 5470 conditions per place. [2023-11-17 16:24:31,383 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 1211 selfloop transitions, 227 changer transitions 2/1440 dead transitions. [2023-11-17 16:24:31,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 1440 transitions, 44062 flow [2023-11-17 16:24:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 16:24:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 16:24:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1739 transitions. [2023-11-17 16:24:31,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006912442396313 [2023-11-17 16:24:31,385 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1739 transitions. [2023-11-17 16:24:31,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1739 transitions. [2023-11-17 16:24:31,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:24:31,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1739 transitions. [2023-11-17 16:24:31,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 62.107142857142854) internal successors, (1739), 28 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:31,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 155.0) internal successors, (4495), 29 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:31,390 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 155.0) internal successors, (4495), 29 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:31,390 INFO L175 Difference]: Start difference. First operand has 560 places, 1355 transitions, 38601 flow. Second operand 28 states and 1739 transitions. [2023-11-17 16:24:31,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 1440 transitions, 44062 flow [2023-11-17 16:24:34,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 1440 transitions, 42487 flow, removed 770 selfloop flow, removed 7 redundant places. [2023-11-17 16:24:34,676 INFO L231 Difference]: Finished difference. Result has 587 places, 1383 transitions, 39073 flow [2023-11-17 16:24:34,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=37055, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=39073, PETRI_PLACES=587, PETRI_TRANSITIONS=1383} [2023-11-17 16:24:34,681 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 567 predicate places. [2023-11-17 16:24:34,681 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 1383 transitions, 39073 flow [2023-11-17 16:24:34,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.65217391304348) internal successors, (1372), 23 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:34,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:24:34,682 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:24:34,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-17 16:24:34,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-17 16:24:34,883 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:24:34,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:24:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1545152151, now seen corresponding path program 28 times [2023-11-17 16:24:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:24:34,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617098507] [2023-11-17 16:24:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:24:34,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:24:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:24:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:35,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:24:35,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617098507] [2023-11-17 16:24:35,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617098507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:24:35,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741116097] [2023-11-17 16:24:35,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:24:35,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:35,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:24:35,089 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:24:35,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-17 16:24:35,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:24:35,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:24:35,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:24:35,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:24:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:35,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:24:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741116097] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:24:35,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:24:35,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-17 16:24:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245417142] [2023-11-17 16:24:35,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:24:35,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:24:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:24:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:24:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:24:35,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:24:35,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 1383 transitions, 39073 flow. Second operand has 18 states, 18 states have (on average 59.94444444444444) internal successors, (1079), 18 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:35,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:24:35,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:24:35,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:24:39,710 INFO L124 PetriNetUnfolderBase]: 3881/6444 cut-off events. [2023-11-17 16:24:39,711 INFO L125 PetriNetUnfolderBase]: For 476348/476348 co-relation queries the response was YES. [2023-11-17 16:24:39,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90482 conditions, 6444 events. 3881/6444 cut-off events. For 476348/476348 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 42252 event pairs, 130 based on Foata normal form. 23/6467 useless extension candidates. Maximal degree in co-relation 89996. Up to 5454 conditions per place. [2023-11-17 16:24:39,819 INFO L140 encePairwiseOnDemand]: 146/155 looper letters, 1290 selfloop transitions, 288 changer transitions 22/1600 dead transitions. [2023-11-17 16:24:39,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 1600 transitions, 49251 flow [2023-11-17 16:24:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-17 16:24:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-17 16:24:39,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2205 transitions. [2023-11-17 16:24:39,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2023-11-17 16:24:39,821 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2205 transitions. [2023-11-17 16:24:39,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2205 transitions. [2023-11-17 16:24:39,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:24:39,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2205 transitions. [2023-11-17 16:24:39,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 63.0) internal successors, (2205), 35 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:39,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 155.0) internal successors, (5580), 36 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:39,826 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 155.0) internal successors, (5580), 36 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:39,826 INFO L175 Difference]: Start difference. First operand has 587 places, 1383 transitions, 39073 flow. Second operand 35 states and 2205 transitions. [2023-11-17 16:24:39,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 1600 transitions, 49251 flow [2023-11-17 16:24:43,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1600 transitions, 47993 flow, removed 563 selfloop flow, removed 12 redundant places. [2023-11-17 16:24:43,269 INFO L231 Difference]: Finished difference. Result has 623 places, 1483 transitions, 43211 flow [2023-11-17 16:24:43,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=38171, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=43211, PETRI_PLACES=623, PETRI_TRANSITIONS=1483} [2023-11-17 16:24:43,270 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 603 predicate places. [2023-11-17 16:24:43,271 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 1483 transitions, 43211 flow [2023-11-17 16:24:43,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 59.94444444444444) internal successors, (1079), 18 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:43,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:24:43,271 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:24:43,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-17 16:24:43,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:43,477 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:24:43,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:24:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash 794220303, now seen corresponding path program 29 times [2023-11-17 16:24:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:24:43,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785344697] [2023-11-17 16:24:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:24:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:24:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:24:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:43,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:24:43,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785344697] [2023-11-17 16:24:43,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785344697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:24:43,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174449371] [2023-11-17 16:24:43,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:24:43,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:43,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:24:43,747 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:24:43,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-17 16:24:43,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:24:43,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:24:43,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:24:43,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:24:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:44,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:24:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:44,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174449371] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:24:44,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:24:44,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-17 16:24:44,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957432528] [2023-11-17 16:24:44,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:24:44,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:24:44,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:24:44,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:24:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:24:44,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:24:44,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 1483 transitions, 43211 flow. Second operand has 24 states, 24 states have (on average 59.916666666666664) internal successors, (1438), 24 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:44,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:24:44,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:24:44,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:24:50,397 INFO L124 PetriNetUnfolderBase]: 4344/7290 cut-off events. [2023-11-17 16:24:50,397 INFO L125 PetriNetUnfolderBase]: For 588624/588624 co-relation queries the response was YES. [2023-11-17 16:24:50,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105106 conditions, 7290 events. 4344/7290 cut-off events. For 588624/588624 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 49286 event pairs, 144 based on Foata normal form. 14/7304 useless extension candidates. Maximal degree in co-relation 104605. Up to 5740 conditions per place. [2023-11-17 16:24:50,518 INFO L140 encePairwiseOnDemand]: 146/155 looper letters, 1258 selfloop transitions, 464 changer transitions 51/1773 dead transitions. [2023-11-17 16:24:50,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 1773 transitions, 56113 flow [2023-11-17 16:24:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 16:24:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 16:24:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2072 transitions. [2023-11-17 16:24:50,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050830889540567 [2023-11-17 16:24:50,523 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2072 transitions. [2023-11-17 16:24:50,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2072 transitions. [2023-11-17 16:24:50,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:24:50,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2072 transitions. [2023-11-17 16:24:50,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 62.78787878787879) internal successors, (2072), 33 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:50,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 155.0) internal successors, (5270), 34 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:50,529 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 155.0) internal successors, (5270), 34 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:50,529 INFO L175 Difference]: Start difference. First operand has 623 places, 1483 transitions, 43211 flow. Second operand 33 states and 2072 transitions. [2023-11-17 16:24:50,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 1773 transitions, 56113 flow [2023-11-17 16:24:55,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 1773 transitions, 54345 flow, removed 834 selfloop flow, removed 10 redundant places. [2023-11-17 16:24:55,618 INFO L231 Difference]: Finished difference. Result has 658 places, 1633 transitions, 48760 flow [2023-11-17 16:24:55,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=41523, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1074, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=48760, PETRI_PLACES=658, PETRI_TRANSITIONS=1633} [2023-11-17 16:24:55,620 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 638 predicate places. [2023-11-17 16:24:55,621 INFO L495 AbstractCegarLoop]: Abstraction has has 658 places, 1633 transitions, 48760 flow [2023-11-17 16:24:55,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 59.916666666666664) internal successors, (1438), 24 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:55,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:24:55,621 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:24:55,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-17 16:24:55,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:55,827 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:24:55,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:24:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1740259015, now seen corresponding path program 30 times [2023-11-17 16:24:55,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:24:55,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657866551] [2023-11-17 16:24:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:24:55,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:24:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:24:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:56,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:24:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657866551] [2023-11-17 16:24:56,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657866551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:24:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691112030] [2023-11-17 16:24:56,086 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:24:56,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:24:56,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:24:56,087 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:24:56,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-17 16:24:56,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 16:24:56,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:24:56,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 16:24:56,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:24:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:56,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:24:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:24:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691112030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:24:56,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:24:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-17 16:24:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273566089] [2023-11-17 16:24:56,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:24:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:24:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:24:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:24:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:24:56,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:24:56,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 1633 transitions, 48760 flow. Second operand has 25 states, 25 states have (on average 59.88) internal successors, (1497), 25 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:24:56,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:24:56,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:24:56,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:03,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:25:08,119 INFO L124 PetriNetUnfolderBase]: 4614/7766 cut-off events. [2023-11-17 16:25:08,119 INFO L125 PetriNetUnfolderBase]: For 713214/713214 co-relation queries the response was YES. [2023-11-17 16:25:08,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115686 conditions, 7766 events. 4614/7766 cut-off events. For 713214/713214 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 53421 event pairs, 147 based on Foata normal form. 24/7790 useless extension candidates. Maximal degree in co-relation 115431. Up to 6620 conditions per place. [2023-11-17 16:25:08,264 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 1429 selfloop transitions, 418 changer transitions 17/1864 dead transitions. [2023-11-17 16:25:08,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 1864 transitions, 59845 flow [2023-11-17 16:25:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-17 16:25:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-17 16:25:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2503 transitions. [2023-11-17 16:25:08,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037096774193548 [2023-11-17 16:25:08,266 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2503 transitions. [2023-11-17 16:25:08,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2503 transitions. [2023-11-17 16:25:08,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:08,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2503 transitions. [2023-11-17 16:25:08,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 62.575) internal successors, (2503), 40 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:08,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 155.0) internal successors, (6355), 41 states have internal predecessors, (6355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:08,272 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 155.0) internal successors, (6355), 41 states have internal predecessors, (6355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:08,272 INFO L175 Difference]: Start difference. First operand has 658 places, 1633 transitions, 48760 flow. Second operand 40 states and 2503 transitions. [2023-11-17 16:25:08,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 1864 transitions, 59845 flow [2023-11-17 16:25:15,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 1864 transitions, 58582 flow, removed 583 selfloop flow, removed 15 redundant places. [2023-11-17 16:25:15,630 INFO L231 Difference]: Finished difference. Result has 696 places, 1771 transitions, 54338 flow [2023-11-17 16:25:15,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=47535, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=54338, PETRI_PLACES=696, PETRI_TRANSITIONS=1771} [2023-11-17 16:25:15,632 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 676 predicate places. [2023-11-17 16:25:15,632 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 1771 transitions, 54338 flow [2023-11-17 16:25:15,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 59.88) internal successors, (1497), 25 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:15,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:15,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:15,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-17 16:25:15,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-17 16:25:15,834 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:25:15,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:15,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1555918755, now seen corresponding path program 31 times [2023-11-17 16:25:15,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:15,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834674514] [2023-11-17 16:25:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:15,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:16,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:16,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834674514] [2023-11-17 16:25:16,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834674514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:16,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929493688] [2023-11-17 16:25:16,138 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:25:16,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:16,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:16,139 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:16,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-17 16:25:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:16,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:25:16,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:16,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:17,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:17,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929493688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:17,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:17,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-17 16:25:17,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770890380] [2023-11-17 16:25:17,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:17,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:25:17,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:17,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:25:17,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:25:17,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:25:17,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 1771 transitions, 54338 flow. Second operand has 24 states, 24 states have (on average 59.791666666666664) internal successors, (1435), 24 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:17,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:17,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:25:17,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:28,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:25:30,212 INFO L124 PetriNetUnfolderBase]: 5051/8558 cut-off events. [2023-11-17 16:25:30,212 INFO L125 PetriNetUnfolderBase]: For 890497/890497 co-relation queries the response was YES. [2023-11-17 16:25:30,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130011 conditions, 8558 events. 5051/8558 cut-off events. For 890497/890497 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 60492 event pairs, 121 based on Foata normal form. 62/8620 useless extension candidates. Maximal degree in co-relation 129664. Up to 6108 conditions per place. [2023-11-17 16:25:30,482 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 1461 selfloop transitions, 636 changer transitions 51/2148 dead transitions. [2023-11-17 16:25:30,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 742 places, 2148 transitions, 70341 flow [2023-11-17 16:25:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-17 16:25:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-17 16:25:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2954 transitions. [2023-11-17 16:25:30,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054907343857241 [2023-11-17 16:25:30,487 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2954 transitions. [2023-11-17 16:25:30,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2954 transitions. [2023-11-17 16:25:30,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:30,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2954 transitions. [2023-11-17 16:25:30,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 62.851063829787236) internal successors, (2954), 47 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:30,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 155.0) internal successors, (7440), 48 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:30,496 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 155.0) internal successors, (7440), 48 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:30,496 INFO L175 Difference]: Start difference. First operand has 696 places, 1771 transitions, 54338 flow. Second operand 47 states and 2954 transitions. [2023-11-17 16:25:30,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 742 places, 2148 transitions, 70341 flow [2023-11-17 16:25:39,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 2148 transitions, 66983 flow, removed 1487 selfloop flow, removed 19 redundant places. [2023-11-17 16:25:39,704 INFO L231 Difference]: Finished difference. Result has 742 places, 1944 transitions, 60785 flow [2023-11-17 16:25:39,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=51498, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=60785, PETRI_PLACES=742, PETRI_TRANSITIONS=1944} [2023-11-17 16:25:39,706 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 722 predicate places. [2023-11-17 16:25:39,706 INFO L495 AbstractCegarLoop]: Abstraction has has 742 places, 1944 transitions, 60785 flow [2023-11-17 16:25:39,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 59.791666666666664) internal successors, (1435), 24 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:39,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:39,706 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:39,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-17 16:25:39,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:39,907 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:25:39,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:39,907 INFO L85 PathProgramCache]: Analyzing trace with hash -817116919, now seen corresponding path program 32 times [2023-11-17 16:25:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:39,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813665485] [2023-11-17 16:25:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:39,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:40,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:40,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813665485] [2023-11-17 16:25:40,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813665485] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:40,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442466598] [2023-11-17 16:25:40,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:25:40,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:40,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:40,164 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:40,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-17 16:25:40,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:25:40,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:40,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:25:40,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:40,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442466598] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:40,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-11-17 16:25:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653874632] [2023-11-17 16:25:40,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:40,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:25:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:25:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:25:40,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:25:40,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 742 places, 1944 transitions, 60785 flow. Second operand has 23 states, 23 states have (on average 59.65217391304348) internal successors, (1372), 23 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:40,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:40,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:25:40,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:44,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:25:54,560 INFO L124 PetriNetUnfolderBase]: 5153/8703 cut-off events. [2023-11-17 16:25:54,560 INFO L125 PetriNetUnfolderBase]: For 913795/913795 co-relation queries the response was YES. [2023-11-17 16:25:54,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133837 conditions, 8703 events. 5153/8703 cut-off events. For 913795/913795 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 61468 event pairs, 1366 based on Foata normal form. 34/8737 useless extension candidates. Maximal degree in co-relation 133466. Up to 8031 conditions per place. [2023-11-17 16:25:54,722 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 1772 selfloop transitions, 297 changer transitions 10/2079 dead transitions. [2023-11-17 16:25:54,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 2079 transitions, 69500 flow [2023-11-17 16:25:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 16:25:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 16:25:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2041 transitions. [2023-11-17 16:25:54,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39902248289345066 [2023-11-17 16:25:54,725 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2041 transitions. [2023-11-17 16:25:54,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2041 transitions. [2023-11-17 16:25:54,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:54,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2041 transitions. [2023-11-17 16:25:54,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 61.84848484848485) internal successors, (2041), 33 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:54,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 155.0) internal successors, (5270), 34 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:54,729 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 155.0) internal successors, (5270), 34 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:54,729 INFO L175 Difference]: Start difference. First operand has 742 places, 1944 transitions, 60785 flow. Second operand 33 states and 2041 transitions. [2023-11-17 16:25:54,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 773 places, 2079 transitions, 69500 flow [2023-11-17 16:26:04,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 752 places, 2079 transitions, 65326 flow, removed 2003 selfloop flow, removed 21 redundant places. [2023-11-17 16:26:04,368 INFO L231 Difference]: Finished difference. Result has 768 places, 2003 transitions, 60598 flow [2023-11-17 16:26:04,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=57419, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=60598, PETRI_PLACES=768, PETRI_TRANSITIONS=2003} [2023-11-17 16:26:04,370 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 748 predicate places. [2023-11-17 16:26:04,370 INFO L495 AbstractCegarLoop]: Abstraction has has 768 places, 2003 transitions, 60598 flow [2023-11-17 16:26:04,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.65217391304348) internal successors, (1372), 23 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:04,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:04,371 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:04,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-17 16:26:04,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:04,571 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:26:04,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1594030630, now seen corresponding path program 33 times [2023-11-17 16:26:04,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:04,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202580970] [2023-11-17 16:26:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:04,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:04,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202580970] [2023-11-17 16:26:04,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202580970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:04,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059485539] [2023-11-17 16:26:04,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:26:04,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:04,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:04,990 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:04,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-17 16:26:05,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:26:05,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:26:05,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:26:05,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:05,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:29,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059485539] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:29,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:29,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-11-17 16:26:29,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971369595] [2023-11-17 16:26:29,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:29,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:26:29,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:26:29,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=467, Unknown=4, NotChecked=0, Total=600 [2023-11-17 16:26:29,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:26:29,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 768 places, 2003 transitions, 60598 flow. Second operand has 25 states, 25 states have (on average 60.08) internal successors, (1502), 25 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 16:26:29,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:29,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:26:29,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:33,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:26:34,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 16:26:36,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:27:33,259 WARN L293 SmtUtils]: Spent 42.72s on a formula simplification. DAG size of input: 63 DAG size of output: 39 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 16:27:36,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:27:38,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:27:40,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 16:27:59,934 WARN L293 SmtUtils]: Spent 10.84s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 16:28:02,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:28:27,081 WARN L293 SmtUtils]: Spent 17.21s on a formula simplification. DAG size of input: 72 DAG size of output: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 16:28:29,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:28:31,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:28:33,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 16:28:35,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:28:54,852 WARN L293 SmtUtils]: Spent 16.35s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 16:28:56,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:28:58,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:29:03,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:05,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:29:07,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:09,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:11,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:14,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:15,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:29:18,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:20,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:23,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:25,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:27,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:30,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:32,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:34,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:38,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:40,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:42,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:29:46,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:51,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:55,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:57,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:29:57,890 INFO L124 PetriNetUnfolderBase]: 6595/11433 cut-off events. [2023-11-17 16:29:57,891 INFO L125 PetriNetUnfolderBase]: For 1208258/1208258 co-relation queries the response was YES. [2023-11-17 16:29:58,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175689 conditions, 11433 events. 6595/11433 cut-off events. For 1208258/1208258 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 87502 event pairs, 162 based on Foata normal form. 14/11447 useless extension candidates. Maximal degree in co-relation 175391. Up to 5212 conditions per place. [2023-11-17 16:29:58,132 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 1683 selfloop transitions, 974 changer transitions 175/2832 dead transitions. [2023-11-17 16:29:58,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 2832 transitions, 95295 flow [2023-11-17 16:29:58,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 16:29:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 16:29:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1755 transitions. [2023-11-17 16:29:58,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2023-11-17 16:29:58,138 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1755 transitions. [2023-11-17 16:29:58,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1755 transitions. [2023-11-17 16:29:58,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:29:58,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1755 transitions. [2023-11-17 16:29:58,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 65.0) internal successors, (1755), 27 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:58,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 155.0) internal successors, (4340), 28 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:58,143 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 155.0) internal successors, (4340), 28 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:58,143 INFO L175 Difference]: Start difference. First operand has 768 places, 2003 transitions, 60598 flow. Second operand 27 states and 1755 transitions. [2023-11-17 16:29:58,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 791 places, 2832 transitions, 95295 flow [2023-11-17 16:30:11,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 777 places, 2832 transitions, 93884 flow, removed 521 selfloop flow, removed 14 redundant places. [2023-11-17 16:30:11,687 INFO L231 Difference]: Finished difference. Result has 798 places, 2293 transitions, 74459 flow [2023-11-17 16:30:11,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=59818, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2003, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=663, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=74459, PETRI_PLACES=798, PETRI_TRANSITIONS=2293} [2023-11-17 16:30:11,690 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 778 predicate places. [2023-11-17 16:30:11,690 INFO L495 AbstractCegarLoop]: Abstraction has has 798 places, 2293 transitions, 74459 flow [2023-11-17 16:30:11,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 60.08) internal successors, (1502), 25 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 16:30:11,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:30:11,691 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:30:11,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-17 16:30:11,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-17 16:30:11,897 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:30:11,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:30:11,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2054868449, now seen corresponding path program 34 times [2023-11-17 16:30:11,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:30:11,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116146016] [2023-11-17 16:30:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:30:11,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:30:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:30:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:30:14,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:30:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116146016] [2023-11-17 16:30:14,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116146016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:30:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046212178] [2023-11-17 16:30:14,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:30:14,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:30:14,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:30:14,398 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:30:14,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-17 16:30:14,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:30:14,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:30:14,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:30:14,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:30:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:30:14,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:30:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:30:15,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046212178] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:30:15,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:30:15,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-11-17 16:30:15,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640701587] [2023-11-17 16:30:15,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:30:15,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 16:30:15,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:30:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 16:30:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2023-11-17 16:30:15,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:30:15,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 2293 transitions, 74459 flow. Second operand has 30 states, 30 states have (on average 59.733333333333334) internal successors, (1792), 30 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:15,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:30:15,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:30:15,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:30:43,485 INFO L124 PetriNetUnfolderBase]: 6616/11540 cut-off events. [2023-11-17 16:30:43,485 INFO L125 PetriNetUnfolderBase]: For 1369132/1369132 co-relation queries the response was YES. [2023-11-17 16:30:43,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186227 conditions, 11540 events. 6616/11540 cut-off events. For 1369132/1369132 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 89324 event pairs, 180 based on Foata normal form. 24/11564 useless extension candidates. Maximal degree in co-relation 185800. Up to 4944 conditions per place. [2023-11-17 16:30:43,753 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 1612 selfloop transitions, 895 changer transitions 23/2530 dead transitions. [2023-11-17 16:30:43,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 848 places, 2530 transitions, 87520 flow [2023-11-17 16:30:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-17 16:30:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-17 16:30:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3182 transitions. [2023-11-17 16:30:43,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025300442757748 [2023-11-17 16:30:43,756 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3182 transitions. [2023-11-17 16:30:43,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3182 transitions. [2023-11-17 16:30:43,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:30:43,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3182 transitions. [2023-11-17 16:30:43,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 62.3921568627451) internal successors, (3182), 51 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:43,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 155.0) internal successors, (8060), 52 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:43,765 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 155.0) internal successors, (8060), 52 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:43,765 INFO L175 Difference]: Start difference. First operand has 798 places, 2293 transitions, 74459 flow. Second operand 51 states and 3182 transitions. [2023-11-17 16:30:43,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 848 places, 2530 transitions, 87520 flow [2023-11-17 16:30:59,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 2530 transitions, 85446 flow, removed 928 selfloop flow, removed 19 redundant places. [2023-11-17 16:30:59,643 INFO L231 Difference]: Finished difference. Result has 844 places, 2398 transitions, 80578 flow [2023-11-17 16:30:59,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=72797, PETRI_DIFFERENCE_MINUEND_PLACES=779, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=802, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=80578, PETRI_PLACES=844, PETRI_TRANSITIONS=2398} [2023-11-17 16:30:59,645 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 824 predicate places. [2023-11-17 16:30:59,645 INFO L495 AbstractCegarLoop]: Abstraction has has 844 places, 2398 transitions, 80578 flow [2023-11-17 16:30:59,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 59.733333333333334) internal successors, (1792), 30 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:59,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:30:59,645 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:30:59,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-17 16:30:59,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-17 16:30:59,846 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:30:59,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:30:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1053239040, now seen corresponding path program 35 times [2023-11-17 16:30:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:30:59,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345648465] [2023-11-17 16:30:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:30:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:30:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:31:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:00,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:31:00,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345648465] [2023-11-17 16:31:00,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345648465] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:31:00,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895179264] [2023-11-17 16:31:00,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:31:00,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:31:00,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:31:00,205 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:31:00,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-17 16:31:00,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 16:31:00,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:31:00,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:31:00,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:31:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:31:00,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:31:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:31:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895179264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:31:01,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:31:01,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2023-11-17 16:31:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019069249] [2023-11-17 16:31:01,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:31:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:31:01,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:31:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:31:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:31:01,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:31:01,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 844 places, 2398 transitions, 80578 flow. Second operand has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:01,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:31:01,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:31:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:31:19,055 INFO L124 PetriNetUnfolderBase]: 6589/11478 cut-off events. [2023-11-17 16:31:19,055 INFO L125 PetriNetUnfolderBase]: For 1443660/1443660 co-relation queries the response was YES. [2023-11-17 16:31:19,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186168 conditions, 11478 events. 6589/11478 cut-off events. For 1443660/1443660 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 88605 event pairs, 219 based on Foata normal form. 98/11576 useless extension candidates. Maximal degree in co-relation 185729. Up to 8048 conditions per place. [2023-11-17 16:31:19,316 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 1932 selfloop transitions, 676 changer transitions 80/2688 dead transitions. [2023-11-17 16:31:19,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 878 places, 2688 transitions, 96160 flow [2023-11-17 16:31:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-17 16:31:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-17 16:31:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2330 transitions. [2023-11-17 16:31:19,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4062772449869224 [2023-11-17 16:31:19,319 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2330 transitions. [2023-11-17 16:31:19,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2330 transitions. [2023-11-17 16:31:19,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:31:19,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2330 transitions. [2023-11-17 16:31:19,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 62.972972972972975) internal successors, (2330), 37 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:19,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 155.0) internal successors, (5890), 38 states have internal predecessors, (5890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:19,325 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 155.0) internal successors, (5890), 38 states have internal predecessors, (5890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:19,325 INFO L175 Difference]: Start difference. First operand has 844 places, 2398 transitions, 80578 flow. Second operand 37 states and 2330 transitions. [2023-11-17 16:31:19,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 878 places, 2688 transitions, 96160 flow [2023-11-17 16:31:36,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 851 places, 2688 transitions, 92746 flow, removed 1585 selfloop flow, removed 27 redundant places. [2023-11-17 16:31:36,134 INFO L231 Difference]: Finished difference. Result has 860 places, 2410 transitions, 80173 flow [2023-11-17 16:31:36,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=77010, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=652, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=80173, PETRI_PLACES=860, PETRI_TRANSITIONS=2410} [2023-11-17 16:31:36,136 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 840 predicate places. [2023-11-17 16:31:36,136 INFO L495 AbstractCegarLoop]: Abstraction has has 860 places, 2410 transitions, 80173 flow [2023-11-17 16:31:36,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:36,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:31:36,137 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:31:36,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-17 16:31:36,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-17 16:31:36,337 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:31:36,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:31:36,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1055889608, now seen corresponding path program 36 times [2023-11-17 16:31:36,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:31:36,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665416088] [2023-11-17 16:31:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:31:36,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:31:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:31:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:31:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665416088] [2023-11-17 16:31:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665416088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:31:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611562858] [2023-11-17 16:31:36,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:31:36,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:31:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:31:36,680 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:31:36,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-17 16:31:36,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 16:31:36,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:31:36,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 16:31:36,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:31:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:37,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:31:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:37,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611562858] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:31:37,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:31:37,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2023-11-17 16:31:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188806150] [2023-11-17 16:31:37,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:31:37,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 16:31:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:31:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 16:31:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2023-11-17 16:31:37,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 155 [2023-11-17 16:31:37,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 860 places, 2410 transitions, 80173 flow. Second operand has 26 states, 26 states have (on average 59.76923076923077) internal successors, (1554), 26 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:37,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:31:37,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 155 [2023-11-17 16:31:37,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-17 16:31:47,166 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:31:47,166 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:31:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-17 16:31:47,198 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:31:47,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-17 16:31:47,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:31:47,399 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 58/155 universal loopers) in iteration 38,while PetriNetUnfolder was constructing finite prefix that currently has 38436 conditions, 2640 events (1475/2639 cut-off events. For 278257/278257 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 20254 event pairs, 26 based on Foata normal form. 6/3436 useless extension candidates. Maximal degree in co-relation 38142. Up to 1137 conditions per place.). [2023-11-17 16:31:47,400 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:31:47,400 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:31:47,401 INFO L445 BasicCegarLoop]: Path program histogram: [36, 1, 1] [2023-11-17 16:31:47,403 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:31:47,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:31:47,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:31:47 BasicIcfg [2023-11-17 16:31:47,404 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:31:47,405 INFO L158 Benchmark]: Toolchain (without parser) took 529964.02ms. Allocated memory was 282.1MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 232.3MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-11-17 16:31:47,405 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 186.6MB. Free memory was 140.3MB in the beginning and 140.2MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:31:47,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.53ms. Allocated memory is still 282.1MB. Free memory was 232.3MB in the beginning and 221.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:31:47,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.23ms. Allocated memory is still 282.1MB. Free memory was 221.2MB in the beginning and 219.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:31:47,405 INFO L158 Benchmark]: Boogie Preprocessor took 26.90ms. Allocated memory is still 282.1MB. Free memory was 219.7MB in the beginning and 218.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:31:47,406 INFO L158 Benchmark]: RCFGBuilder took 409.57ms. Allocated memory is still 282.1MB. Free memory was 218.1MB in the beginning and 202.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-11-17 16:31:47,406 INFO L158 Benchmark]: TraceAbstraction took 529287.50ms. Allocated memory was 282.1MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 201.9MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-11-17 16:31:47,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 186.6MB. Free memory was 140.3MB in the beginning and 140.2MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.53ms. Allocated memory is still 282.1MB. Free memory was 232.3MB in the beginning and 221.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.23ms. Allocated memory is still 282.1MB. Free memory was 221.2MB in the beginning and 219.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.90ms. Allocated memory is still 282.1MB. Free memory was 219.7MB in the beginning and 218.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 409.57ms. Allocated memory is still 282.1MB. Free memory was 218.1MB in the beginning and 202.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 529287.50ms. Allocated memory was 282.1MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 201.9MB in the beginning and 1.9GB 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: 1.9s, 75 PlacesBefore, 20 PlacesAfterwards, 74 TransitionsBefore, 15 TransitionsAfterwards, 504 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 70 TotalNumberOfCompositions, 528 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 516, independent: 514, independent conditional: 0, independent unconditional: 514, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 352, independent: 350, independent conditional: 0, independent unconditional: 350, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 352, independent: 350, independent conditional: 0, independent unconditional: 350, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 35, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 516, independent: 164, independent conditional: 0, independent unconditional: 164, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 352, unknown conditional: 0, unknown unconditional: 352] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 58/155 universal loopers) in iteration 38,while PetriNetUnfolder was constructing finite prefix that currently has 38436 conditions, 2640 events (1475/2639 cut-off events. For 278257/278257 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 20254 event pairs, 26 based on Foata normal form. 6/3436 useless extension candidates. Maximal degree in co-relation 38142. Up to 1137 conditions per place.). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 58/155 universal loopers) in iteration 38,while PetriNetUnfolder was constructing finite prefix that currently has 38436 conditions, 2640 events (1475/2639 cut-off events. For 278257/278257 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 20254 event pairs, 26 based on Foata normal form. 6/3436 useless extension candidates. Maximal degree in co-relation 38142. Up to 1137 conditions per place.). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 58/155 universal loopers) in iteration 38,while PetriNetUnfolder was constructing finite prefix that currently has 38436 conditions, 2640 events (1475/2639 cut-off events. For 278257/278257 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 20254 event pairs, 26 based on Foata normal form. 6/3436 useless extension candidates. Maximal degree in co-relation 38142. Up to 1137 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 529.2s, OverallIterations: 38, TraceHistogramMax: 4, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 464.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 32 mSolverCounterUnknown, 3343 SdHoareTripleChecker+Valid, 112.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3343 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 109.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 984 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20016 IncrementalHoareTripleChecker+Invalid, 21032 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 984 mSolverCounterUnsat, 0 mSDtfsCounter, 20016 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2487 GetRequests, 1156 SyntacticMatches, 48 SemanticMatches, 1283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14051 ImplicationChecksByTransitivity, 193.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80578occurred in iteration=36, InterpolantAutomatonStates: 993, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 51.3s InterpolantComputationTime, 1275 NumberOfCodeBlocks, 1264 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1789 ConstructedInterpolants, 12 QuantifiedInterpolants, 19566 SizeOfPredicates, 280 NumberOfNonLiveVariables, 4483 ConjunctsInSsa, 461 ConjunctsInUnsatCore, 110 InterpolantComputations, 2 PerfectInterpolantSequences, 124/799 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown